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Samarasimhareddy M, Mayer G, Hurevich M, Friedler A. Multiphosphorylated peptides: importance, synthetic strategies, and applications for studying biological mechanisms. Org Biomol Chem 2020; 18:3405-3422. [DOI: 10.1039/d0ob00499e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Advances in the synthesis of multiphosphorylated peptides and peptide libraries: tools for studying the effects of phosphorylation patterns on protein function and regulation.
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Affiliation(s)
- Mamidi Samarasimhareddy
- The Institute of Chemistry
- Edmond J. Safra Campus
- Givat Ram
- The Hebrew University of Jerusalem
- Jerusalem
| | - Guy Mayer
- The Institute of Chemistry
- Edmond J. Safra Campus
- Givat Ram
- The Hebrew University of Jerusalem
- Jerusalem
| | - Mattan Hurevich
- The Institute of Chemistry
- Edmond J. Safra Campus
- Givat Ram
- The Hebrew University of Jerusalem
- Jerusalem
| | - Assaf Friedler
- The Institute of Chemistry
- Edmond J. Safra Campus
- Givat Ram
- The Hebrew University of Jerusalem
- Jerusalem
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Richards CM, Li M, Perkins AL, Rathore A, Harki DA, Harris RS. Reassessing APOBEC3G Inhibition by HIV-1 Vif-Derived Peptides. J Mol Biol 2016; 429:88-96. [PMID: 27887868 DOI: 10.1016/j.jmb.2016.11.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 11/14/2016] [Accepted: 11/15/2016] [Indexed: 11/13/2022]
Abstract
The human APOBEC3G (A3G) enzyme restricts HIV-1 in the absence of the viral accessory protein viral infectivity factor (Vif) by deaminating viral cDNA cytosines to uracils. These uracil lesions base-pair with adenines during the completion of reverse transcription and result in A3G signature G-to-A mutations in the viral genome. Vif protects HIV-1 from A3G-mediated restriction by forming an E3-ubiquitin ligase complex to polyubiquitinate A3G and trigger its degradation. Prior studies indicated that Vif may also directly block the enzymatic activity of A3G and, provocatively, that Vif-derived peptides, Vif 25-39 and Vif 105-119, are similarly inhibitory. Here, we show that Vif 25-39 does not inhibit A3G enzymatic activity and that the inhibitory effect of Vif 105-119 and that of a shorter derivative Vif 107-115, although recapitulated, are non-specific. We also elaborate a simple method for assaying DNA cytosine deaminase activity that eliminates potential polymerase chain reaction-induced biases. Our results show that these Vif-derived peptides are unlikely to be useful as tools to study A3G function or as leads for the development of future therapeutics.
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Affiliation(s)
- Christopher M Richards
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, 321 Church Street S.E., Minneapolis, MN 55455, USA; Institute for Molecular Virology, University of Minnesota, 515 Delaware Street S.E., Minneapolis, MN 55455, USA
| | - Ming Li
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, 321 Church Street S.E., Minneapolis, MN 55455, USA; Institute for Molecular Virology, University of Minnesota, 515 Delaware Street S.E., Minneapolis, MN 55455, USA
| | - Angela L Perkins
- Department of Medicinal Chemistry, University of Minnesota, 2231 6th St. S.E., Minneapolis, MN 55455, USA
| | - Anurag Rathore
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, 321 Church Street S.E., Minneapolis, MN 55455, USA
| | - Daniel A Harki
- Department of Medicinal Chemistry, University of Minnesota, 2231 6th St. S.E., Minneapolis, MN 55455, USA
| | - Reuben S Harris
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, 321 Church Street S.E., Minneapolis, MN 55455, USA; Institute for Molecular Virology, University of Minnesota, 515 Delaware Street S.E., Minneapolis, MN 55455, USA; Howard Hughes Medical Institute, University of Minnesota, 2231 6th St. S.E., Minneapolis, MN 55455, USA.
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Jiblaoui A, Barbeau J, Vivès T, Cormier P, Glippa V, Cosson B, Benvegnu T. Folate-conjugated stealth archaeosomes for the targeted delivery of novel antitumoral peptides. RSC Adv 2016. [DOI: 10.1039/c6ra15713k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this work, novel archaeosomes based on Egg-PC and a mixture of PEGylated archaeal tetraether lipids were investigated as nanocarriers forin vitrodelivery of an original anticancer peptide.
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Affiliation(s)
- Ahmad Jiblaoui
- Ecole Nationale Supérieure de Chimie de Rennes
- UMR CNRS 6226
- Equipe Chimie Organique et Supramoléculaire
- 35708 Rennes Cedex 7
- France
| | - Julie Barbeau
- Ecole Nationale Supérieure de Chimie de Rennes
- UMR CNRS 6226
- Equipe Chimie Organique et Supramoléculaire
- 35708 Rennes Cedex 7
- France
| | - Thomas Vivès
- Ecole Nationale Supérieure de Chimie de Rennes
- UMR CNRS 6226
- Equipe Chimie Organique et Supramoléculaire
- 35708 Rennes Cedex 7
- France
| | - Patrick Cormier
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR CNRS 8227
- Integrative Biology of Marine Models
- Translation Cell Cycle and Development
| | - Virginie Glippa
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR CNRS 8227
- Integrative Biology of Marine Models
- Translation Cell Cycle and Development
| | - Bertrand Cosson
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR CNRS 8227
- Integrative Biology of Marine Models
- Translation Cell Cycle and Development
| | - Thierry Benvegnu
- Ecole Nationale Supérieure de Chimie de Rennes
- UMR CNRS 6226
- Equipe Chimie Organique et Supramoléculaire
- 35708 Rennes Cedex 7
- France
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