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Lechner H, Emann VR, Breuning M, Höcker B. An Artificial Cofactor Catalyzing the Baylis-Hillman Reaction with Designed Streptavidin as Protein Host*. Chembiochem 2021; 22:1573-1577. [PMID: 33400831 PMCID: PMC8247847 DOI: 10.1002/cbic.202000880] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Indexed: 01/12/2023]
Abstract
An artificial cofactor based on an organocatalyst embedded in a protein has been used to conduct the Baylis-Hillman reaction in a buffered system. As protein host, we chose streptavidin, as it can be easily crystallized and thereby supports the design process. The protein host around the cofactor was rationally designed on the basis of high-resolution crystal structures obtained after each variation of the amino acid sequence. Additionally, DFT-calculated intermediates and transition states were used to rationalize the observed activity. Finally, repeated cycles of structure determination and redesign led to a system with an up to one order of magnitude increase in activity over the bare cofactor and to the most active proteinogenic catalyst for the Baylis-Hillman reaction known today.
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Affiliation(s)
- Horst Lechner
- Department of Biochemistry, University Bayreuth, Universitätsstrasse 30, 95447, Bayreuth, Germany
| | - Vincent R Emann
- Department of Biochemistry, University Bayreuth, Universitätsstrasse 30, 95447, Bayreuth, Germany
| | - M Breuning
- Organic Chemistry, University Bayreuth, Universitätsstrasse 30, 95447, Bayreuth, Germany
| | - Birte Höcker
- Department of Biochemistry, University Bayreuth, Universitätsstrasse 30, 95447, Bayreuth, Germany
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Lucius-Hoene G, Groth S, Becker AK, Dvorak F, Breuning M, Himmel W. Wie erleben Patienten die Veröffentlichung ihrer Krankheitserfahrungen im Internet? REHABILITATION 2013; 52:196-201. [DOI: 10.1055/s-0033-1343492] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- G. Lucius-Hoene
- Abteilung für Rehabilitationspsychologie und Psychotherapie, Institut für Psychologie, Albert-Ludwigs-Universität Freiburg
| | - S. Groth
- Institut für Allgemeinmedizin, Universitätsmedizin Göttingen
| | - A.-K. Becker
- Abteilung für Rehabilitationspsychologie und Psychotherapie, Institut für Psychologie, Albert-Ludwigs-Universität Freiburg
| | - F. Dvorak
- Abteilung für Rehabilitationspsychologie und Psychotherapie, Institut für Psychologie, Albert-Ludwigs-Universität Freiburg
| | - M. Breuning
- Abteilung für Rehabilitationspsychologie und Psychotherapie, Institut für Psychologie, Albert-Ludwigs-Universität Freiburg
| | - W. Himmel
- Institut für Allgemeinmedizin, Universitätsmedizin Göttingen
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Pirson Y, Chauveau D, Watson ML, Zeier M, Breuning M. La polykystose autosomique dominante : progrès cliniques et génétiques. ACTA ACUST UNITED AC 2012. [DOI: 10.4267/10608/298] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Muncke N, Wogatzky BS, Breuning M, Sistermans EA, Endris V, Ross M, Vetrie D, Catsman-Berrevoets CE, Rappold G. Position effect on PLP1 may cause a subset of Pelizaeus-Merzbacher disease symptoms. J Med Genet 2005; 41:e121. [PMID: 15591263 PMCID: PMC1735635 DOI: 10.1136/jmg.2004.019141] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Maat-Kievit A, Helderman-van den Enden P, Losekoot M, de Knijff P, Belfroid R, Vegter-van der Vlis M, Roos R, Breuning M. Using a roster and haplotyping is useful in risk assessment for persons with intermediate and reduced penetrance alleles in Huntington disease. Am J Med Genet 2001; 105:737-44. [PMID: 11803522 DOI: 10.1002/ajmg.1610] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The risk of a person having a child with an inherited disorder, caused by an unstable triplet repeat, such as Huntington disease (HD), depends on the expansion of the mutation in that person, which is connected both to the biological nature of the mutation and to the person's relation to the carrier of the full mutation. Once the mutation causing HD was identified, we were able to diagnose sporadic patients. A sporadic patient can sometimes be connected to a known HD pedigree by using a roster. By haplotyping and calculating the posterior identity-by-descent probability, we could establish whether a connection was coincidental or not. Furthermore, we describe the frequency of intermediate and reduced penetrance alleles detected. Using the family history and the roster to search for a connection, we examined whether these alleles were on the HD haplotype of a family. It is important to know the origin of an intermediate or reduced penetrance allele because if it comes from an HD branch of the family or from the non-HD affected side of the pedigree, different risks for relatives and penetrance ensue. In our study, most intermediate alleles came from the non-HD-affected side of the pedigree and had a repeat size in the lower range with a negligible risk for expansion. Intermediate alleles on the HD haplotypes were larger and found in predictive test applicants from known families or relatives from new mutations with a higher risk for expansion. Reduced penetrance alleles in the higher range were mainly found in symptomatic and predictive test applicants from known families, with a considerable risk for penetrance, although at older age. We conclude that a roster, a thorough family history, and haplotyping in persons with intermediate and reduced penetrance alleles are essential in considering the risk of a person having (a child with) HD.
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Affiliation(s)
- A Maat-Kievit
- Department of Clinical Genetics, Leiden University Medical Center, Leiden, The Netherlands.
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Affiliation(s)
- L van der Westerlaken
- Department of Reproductive Medicine, Leiden University Medical Centre, Leiden, The Netherlands.
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Maat-Kievit A, Losekoot M, Van Den Boer-Van Den Berg H, Van Ommen GJ, Niermeijer M, Breuning M, Tibben A. New problems in testing for Huntington's disease: the issue of intermediate and reduced penetrance alleles. J Med Genet 2001; 38:E12. [PMID: 11283208 PMCID: PMC1734844 DOI: 10.1136/jmg.38.4.e12] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Rosenberg C, Wouters CH, Szuhai K, Dorland R, Pearson P, Poll-The BT, Colombijn RM, Breuning M, Lindhout D. A Rett syndrome patient with a ring X chromosome: further evidence for skewing of X inactivation and heterogeneity in the aetiology of the disease. Eur J Hum Genet 2001; 9:171-7. [PMID: 11313755 DOI: 10.1038/sj.ejhg.5200604] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/1999] [Revised: 11/06/2000] [Accepted: 11/14/2000] [Indexed: 11/09/2022] Open
Abstract
Rett syndrome (RTT) is an X-linked neurodevelopmental disorder, characterised by regression of development in young females. Recently, mutations in the MECP2 gene were found to be present in 80% of sporadic cases, but in much lower frequency (< 30%) among familial cases. Several reports claim that the pattern of X chromosome inactivation (XCI) relates to the penetrance of RTT; in some cases skewed XCI is seen in Rett patients, and in others it is observed among normal carriers. We present here a case of RTT with a 46,X,r(X) in which complete skewed inactivation of the ring was demonstrated. Further, no mutations were found in the MECP2 gene present on the intact X. Our data, in conjunction with two previously published cases of X chromosome abnormalities in RTT, indicate that X chromosome rearrangements are sporadically associated with RTT in conjunction with extreme skewing of X inactivation. Based on our case and reported data, we discuss the evidence for a second X-linked locus for RTT associated with lower penetrance, and a different pattern of XCI, than for MECP2. This would result in a larger proportion of phenotypically normal carrier women transmitting the mutation for this putative second locus, and account for the minority of sporadic and majority of familial cases that are negative for MECP2 mutations.
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Affiliation(s)
- C Rosenberg
- Laboratory of Cytochemistry and Cytometry, Department of Molecular Cell Biology, Leiden University Medical Center, Leiden, The Netherlands.
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Bergen AA, Plomp AS, Schuurman EJ, Terry S, Breuning M, Dauwerse H, Swart J, Kool M, van Soest S, Baas F, ten Brink JB, de Jong PT. Mutations in ABCC6 cause pseudoxanthoma elasticum. Nat Genet 2000; 25:228-31. [PMID: 10835643 DOI: 10.1038/76109] [Citation(s) in RCA: 396] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Pseudoxanthoma elasticum (PXE) is a heritable disorder of the connective tissue. PXE patients frequently experience visual field loss and skin lesions, and occasionally cardiovascular complications. Histopathological findings reveal calcification of the elastic fibres and abnormalities of the collagen fibrils. Most PXE patients are sporadic, but autosomal recessive and dominant inheritance are also observed. We previously localized the PXE gene to chromosome 16p13.1 (refs 8,9) and constructed a physical map. Here we describe homozygosity mapping in five PXE families and the detection of deletions or mutations in ABCC6 (formerly MRP6) associated with all genetic forms of PXE in seven patients or families.
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Affiliation(s)
- A A Bergen
- The Netherlands Ophthalmic Research Institute, Amsterdam, The Netherlands.
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Le Saux O, Urban Z, Göring HH, Csiszar K, Pope FM, Richards A, Pasquali-Ronchetti I, Terry S, Bercovitch L, Lebwohl MG, Breuning M, van den Berg P, Kornet L, Doggett N, Ott J, de Jong PT, Bergen AA, Boyd CD. Pseudoxanthoma elasticum maps to an 820-kb region of the p13.1 region of chromosome 16. Genomics 1999; 62:1-10. [PMID: 10585762 DOI: 10.1006/geno.1999.5925] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We have performed linkage analysis on 21 families with pseudoxanthoma elasticum (PXE) using 10 polymorphic markers located on chromosome 16p13.1. The gene responsible for the PXE phenotype was localized to an 8-cM region of 16p13.1 between markers D16S500 and D16S3041 with a maximum lod score of 8.1 at a recombination fraction of 0.04 for marker D16S3017. The lack of any locus heterogeneity suggests that the major predisposing allele for the PXE phenotype is located in this region. Haplotype studies of a total of 36 PXE families identified several recombinations that further confined the PXE gene to a region (< 1 cM) between markers D16S3060 and D16S79. This PXE locus was identified within a single YAC clone and several overlapping BAC recombinants. From sequence analysis of these BAC recombinants, it is clear that the distance between markers D16S3060 and D16S79 is about 820 kb and contains a total of nine genes including three pseudogenes. We predict that mutations in one of the expressed genes in the locus will be responsible for the PXE phenotype in these families.
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Affiliation(s)
- O Le Saux
- Pacific Biomedical Research Center, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA
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11
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Hateboer N, v Dijk MA, Bogdanova N, Coto E, Saggar-Malik AK, San Millan JL, Torra R, Breuning M, Ravine D. Comparison of phenotypes of polycystic kidney disease types 1 and 2. European PKD1-PKD2 Study Group. Lancet 1999; 353:103-7. [PMID: 10023895 DOI: 10.1016/s0140-6736(98)03495-3] [Citation(s) in RCA: 355] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Although autosomal dominant polycystic kidney disease type 2 (PKD2) is known to have a milder clinical phenotype than PKD1, neither disorder has been compared with an unaffected control population in terms of survival. We report the findings of a multicentre survey that aimed to define more precisely the survival and clinical expression of PKD1 and PKD2. METHODS Clinical data from 333 people with PKD1 (31 families) were compared with data from 291 people with PKD2 (31 families) and 398 geographically matched controls. Survival analysis was used to compare age-at-event data. Differences in the prevalence of complications were assessed by logistic regression. FINDINGS Median age at death or onset of end-stage renal disease was 53.0 years (95% CI 51.2-54.8) in individuals with PKD1, 69.1 years (66.9-71.3) in those with PKD2, and 78.0 years (73.8-82.2) in controls. Women with PKD2 had a significantly longer median survival than men (71.0 [67.4-74.8] vs 67.3 [64.9-69.7] years), but no sex influence was apparent in PKD1. Age at presentation with kidney failure was later in PKD2 than in PKD1 (median age 74.0 [67.2-80.8] vs 54.3 [52.7-55.9] years). PKD2 patients were less likely to have hypertension (odds ratio 0.25 [95% CI 0.15-0.42]), a history of urinary-tract infection (0.50 [0.31-0.83]), or haematuria (0.59 [0.35-0.98]). INTERPRETATION Although PKD2 is clinically milder than PKD1, it has a deleterious impact on overall life expectancy and cannot be regarded as a benign disorder.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Female
- Gene Expression/physiology
- Humans
- Kidney Failure, Chronic/diagnosis
- Kidney Failure, Chronic/genetics
- Kidney Failure, Chronic/mortality
- Male
- Middle Aged
- Phenotype
- Polycystic Kidney, Autosomal Dominant/diagnosis
- Polycystic Kidney, Autosomal Dominant/genetics
- Polycystic Kidney, Autosomal Dominant/mortality
- Polycystic Kidney, Autosomal Recessive/diagnosis
- Polycystic Kidney, Autosomal Recessive/genetics
- Polycystic Kidney, Autosomal Recessive/mortality
- Survival Rate
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Affiliation(s)
- N Hateboer
- Institute of Medical Genetics, University Hospital of Wales, Cardiff, UK.
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12
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Peters K, Peters EM, Breuning M, Schupp O, Wuzik A, Bringmann G. Crystal structure of methyl 1-(2-hydroxy-4,6-dimethylphenyl)naphthyl-2-carboxylate,[СбН2(СНз)2ОН](СООСНз)С10Нб. Z KRIST-NEW CRYST ST 1998. [DOI: 10.1524/ncrs.1998.213.14.353] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Peters K, Peters EM, Breuning M, Bringmann G. Crystal structure of 1-ethyl-1-[1-(2-hydroxy-4,6-dimethylphenyl)-2-naphthyl)]propan-1-ol,[СбН2(СНз)2ОН][С(ОН)(С2Н5)2]С10Нб. Z KRIST-NEW CRYST ST 1998. [DOI: 10.1524/ncrs.1998.213.14.359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Peters K, Peters EM, Breuning M, Wuzik A, Bringmann G. Crystal structure of 2-bromomethyl1-1-(2-benzyloxy-4,6-dimethyl-phenyl)naphthalene,С10Нб(СН2Вr)СбН2(СН3)2OСН2СбН5. Z KRIST-NEW CRYST ST 1998. [DOI: 10.1524/ncrs.1998.213.14.583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Taine L, Goizet C, Wen Z, Petrij F, Breuning M, Saura R, Arveller B, Lacombe D. Deletion submicroscopique du chromosome 16p13.3: etude d'une serie de patients francais porteurs du syndrome de rubinstein-taybi. Arch Pediatr 1997. [DOI: 10.1016/s0929-693x(97)86573-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Pirson Y, Lannoy N, Peters D, Geubel A, Gigot JF, Breuning M, Verellen-Dumoulin C. Isolated polycystic liver disease as a distinct genetic disease, unlinked to polycystic kidney disease 1 and polycystic kidney disease 2. Hepatology 1996. [PMID: 8591848 DOI: 10.1053/jhep.1996.v23.pm0008591848] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Polycystic liver disease (PLD) is proven to occur either sporadically or in association with autosomal dominant polycystic kidney disease (ADPKD), whereas the existence of an isolated (i.e., without any kidney cyst) familial form is disputed. We describe a family with definitely isolated PLD transmitted through three generations and exclude the linkage of the disease to the genetic markers of PKD1 and PKD2, the two main loci responsible for ADPKD. These findings strongly support the existence of PLD as a genetic disease distinct from the known forms of ADPKD.
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Affiliation(s)
- Y Pirson
- Nephrology Unit, University of Louvain Medical School, Brussels, Belgium
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17
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Pirson Y, Lannoy N, Peters D, Geubel A, Gigot JF, Breuning M, Verellen-Dumoulin C. Isolated polycystic liver disease as a distinct genetic disease, unlinked to polycystic kidney disease 1 and polycystic kidney disease 2. Hepatology 1996; 23:249-52. [PMID: 8591848 DOI: 10.1002/hep.510230208] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Polycystic liver disease (PLD) is proven to occur either sporadically or in association with autosomal dominant polycystic kidney disease (ADPKD), whereas the existence of an isolated (i.e., without any kidney cyst) familial form is disputed. We describe a family with definitely isolated PLD transmitted through three generations and exclude the linkage of the disease to the genetic markers of PKD1 and PKD2, the two main loci responsible for ADPKD. These findings strongly support the existence of PLD as a genetic disease distinct from the known forms of ADPKD.
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Affiliation(s)
- Y Pirson
- Nephrology Unit, University of Louvain Medical School, Brussels, Belgium
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de Almeida S, de Almeida E, Peters D, Pinto JR, Távora I, Lavinha J, Breuning M, Prata MM. Autosomal dominant polycystic kidney disease: evidence for the existence of a third locus in a Portuguese family. Hum Genet 1995; 96:83-8. [PMID: 7607660 DOI: 10.1007/bf00214191] [Citation(s) in RCA: 78] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Autosomal dominant polycystic kidney disease is characterized by clinical and genetic heterogeneity. Two loci implicated in the disease have previously been mapped (PKD1 on chromosome 16 and PKD2 on chromosome 4). By two point and multipoint linkage analysis, negative lod scores have been found for both chromosome 16 and chromosome 4 markers in a large Portuguese family, indicating that a third PKD locus is involved in the development of the disease.
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Affiliation(s)
- S de Almeida
- Departamento de Genética Humana, Instituo Nacional de Saúde, Lisboa, Portugal
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Stallings RL, Doggett NA, Callen D, Apostolou S, Chen LZ, Nancarrow JK, Whitmore SA, Harris P, Michison H, Breuning M. Evaluation of a cosmid contig physical map of human chromosome 16. Genomics 1992; 13:1031-9. [PMID: 1505942 DOI: 10.1016/0888-7543(92)90016-l] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A cosmid contig physical map of human chromosome 16 has been developed by repetitive sequence finger-printing of approximately 4000 cosmid clones obtained from a chromosome 16-specific cosmid library. The arrangement of clones in contigs is determined by (1) estimating cosmid length and determining the likelihoods for all possible pairwise clone overlaps, using the fingerprint data, and (2) using an optimization technique to fit contig maps to these estimates. Two important questions concerning this contig map are how much of chromosome 16 is covered and how accurate are the assembled contigs. Both questions can be addressed by hybridization of single-copy sequence probes to gridded arrays of the cosmids. All of the fingerprinted clones have been arrayed on nylon membranes so that any region of interest can be identified by hybridization. The hybridization experiments indicate that approximately 84% of the euchromatic arms of chromosome 16 are covered by contigs and singleton cosmids. Both grid hybridization (26 contigs) and pulsed-field gel electrophoresis experiments (11 contigs) confirmed the assembled contigs, indicating that false positive overlaps occur infrequently in the present map. Furthermore, regional localization of 93 contigs and singleton cosmids to a somatic cell hybrid mapping panel indicates that there is no bias in the coverage of the euchromatic arms.
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Affiliation(s)
- R L Stallings
- Life Sciences Division, Los Alamos National Laboratory, New Mexico 87545
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Vasilov RG, Hahn A, Mölders H, van Rood JJ, Breuning M, Ploegh HL. Analysis of human class I antigens by two-dimensional gel electrophoresis. I. Polymorphism, evidence for additional (non-HLA-A, B, C) gene products, and identification of variant HLA-A, B antigens. Immunogenetics 1983; 17:333-56. [PMID: 6187677 DOI: 10.1007/bf00372454] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Class I antigens were isolated by immunoprecipitation from cell extracts prepared from mitogenically stimulated and internally radiolabeled peripheral blood lymphocytes (PLBs). The precipitating antibodies used are monomorphic and recognize a determinant on the heavy chain of HLA-A, B, C antigens regardless of their allelic specificities when complexed with beta 2m, or determinants on beta 2m itself. Comparison of class I molecules isolated from 25 different homozygous typing cells (HTC) and analyzed by two-dimensional (2-D) gel electrophoresis allowed the identification of those HLA-A, B locus specificities most common in the European Caucasoid population. Class I antigens isolated from HTC that are HLA identical are biochemically indistinguishable also. Evidence was obtained for the expression of additional class I antigens besides the HLA-A, B, C locus products: for some haplotypes, up to six class I genes may be active in mitogenically activated PBLs.No differences in molecular weight and isoelectric point of the class I heavy chains were observed between the antigens recognized by W6/32, the anti-heavy chain reagent, and anti beta 2m reagents. The nature of the mitogenic stimulus, i.e., pokeweed mitogen or phytohemagglutinin, was irrelevant with respect to the class I antigens isolated by this method. Using the HTCs as reference, a panel of HLA-B27 positive heterozygous cells was analyzed. Two types of HLA-B27 antigens, distinct by CML typing were represented. These two forms differed also in their biochemical properties. In addition, we obtained evidence for the existence of an A2 variant. This finding was likewise confirmed by CML typing.
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Spits H, Breuning M, Ivanyi P, Russo C, de Vries JE. In vitro-isolated human cytotoxic T-lymphocyte clones detect variations in serologically defined HLA antigens. Immunogenetics 1982; 16:503-12. [PMID: 6190736 DOI: 10.1007/bf00372020] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
T cells of two donors, JR (HLA-A23,29;B7,7;C-;DRw5) and HG (HLA-A2,23;B40,w44;Cw4), were stimulated with cells from an HLA homozygous lymphoblastoid cell line JY (HLA-A2,2;B7,7,C-,DRw4,6) and cloned by limiting dilution after the third stimulation. Two cytotoxic T-cell (CTL) clones, JR-2-16 (from donor JR) and HG-31 (from donor HG), were used for detailed studies. The results of a panel study using lymphocytes from HLA-typed individuals and a study with two HLA recombinant families indicate that the antigens recognized by the CTL clones JR-2-16 and HG-31 were highly associated with HLA-A2 and HLA-B7, respectively. Blocking studies with a monoclonal antibody recognizing a framework determinant on HLA-A, -B and -C antigens and a monoclonal antibody reacting with HLA-A2 support the notion that JR-2-16 and HG-31 interact with the HLA-A2 and the HLA-B7 antigens per se. However, these clones did not recognize the HLA-A2 and HLA-B7 of all donors typed for these antigens, suggesting that the HLA-A2 and HLA-B7 antigens of these particular donors are variants of the serologically defined HLA antigens. These results indicate that in vitro-derived human CTL clones detect variations in the serologically defined allospecificities and can be used as reagents to elucidate the polymorphism of HLA antigens further.
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Ivanyi P, van Mourik P, Breuning M, Melief CJ. Unexpected lympho-cytotoxic reactions of anti-H-2 sera on normal lymph-node cells: are they due to altered H-2 structures or anti-viral antibodies? J Immunogenet 1980; 7:91-7. [PMID: 7373067 DOI: 10.1111/j.1744-313x.1980.tb00711.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
When testing the serum of an individual anti-H-2 immunized mouse (B10 x A.SW)F1 anti-B10.M by the routine micro-lymphocytotoxicity test on lymph-node cells, unexpected antibodies were found. The most striking finding was that after absorption of anti-H-2.8 antibodies with B10.A(2R) (Kk) cells, antibodies remained which reacted with AKR, B10.AKM and B10.A V+ mice while B10.A V-, B10.BR and C3H mice were negative. While all these strains share the Kk allele, only the positively reacting strains express high titres of infectious RNA turnover viruses. Unexpected reactions were observed also with H-2d, H-2j and H-2r cells and absorption experiments indicated two or three antibody populations. These reactions could be interpreted by two different possibilities: (1) anti-H-2 antibodies react with virus-altered H-2 structures; and (2) anti-viral antibodies react with H-2 structures complexed with viruses. These possibilities should be taken into account when H-2 sera are tested on tumour or virus-infected cells.
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Breuning M, Kreibich H, Schunck H, Vogelsang T. [Recommendations of the workshop group "Female Genital Tuberculosis" on the diagnosis therapy and metaphylaxis of tuberculous diseases of the female genitalia]. Zentralbl Gynakol 1967; 89:1398-402. [PMID: 4298347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Krafft W, Breuning M, Niedner K. [Contribution on the differentiation of hospital staphylococci]. Zentralbl Gynakol 1966; 88:1649-54. [PMID: 4869927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Breuning M. I. Neuere Arbeiten über Antiseptica. Gynecol Obstet Invest 1895. [DOI: 10.1159/000277805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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