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Gutiérrez-Corona JF, Romo-Rodríguez P, Santos-Escobar F, Espino-Saldaña AE, Hernández-Escoto H. Microbial interactions with chromium: basic biological processes and applications in environmental biotechnology. World J Microbiol Biotechnol 2016; 32:191. [DOI: 10.1007/s11274-016-2150-0] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Accepted: 09/25/2016] [Indexed: 12/18/2022]
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Coreño-Alonso A, Solé A, Diestra E, Esteve I, Gutiérrez-Corona JF, Reyna López GE, Fernández FJ, Tomasini A. Mechanisms of interaction of chromium with Aspergillus niger var tubingensis strain Ed8. Bioresour Technol 2014; 158:188-192. [PMID: 24607453 DOI: 10.1016/j.biortech.2014.02.036] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 02/07/2014] [Accepted: 02/10/2014] [Indexed: 06/03/2023]
Abstract
Experiments were conducted to determine the mechanisms of interaction with chromium of Aspergillus niger var tubingensis strain Ed8 in batch culture and in bioreactor experiments. Results obtained in this work showed that the interaction of A. niger var tubingensis Ed8 with Cr(VI) is based mainly in a reduction process and also, secondly, in a sorption process. Using electron microscopy techniques the ultrathin sections obtained from the mycelium biomass produced by the fungus in batch cultures showed the ability to incorporate Cr intracellulary, into low electron-dense inclusions, but not extracellularly. On the other hand, cultures without Cr(VI) of A. niger var tubingensis Ed8, grown in a bubble column bioreactor, reduced Cr(VI) immediately after repeated addition of this oxyanion; after six loads, 460 mg Cr(VI) was reduced to Cr(III) in 60 h, corresponding to a reduction rate of 2.62 mg Cr(VI)g(-1) dry biomass h(-1).
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Affiliation(s)
- A Coreño-Alonso
- Departamento de Biotecnología, Universidad Autónoma Metropolitana, Unidad Iztapalapa, Av. San Rafael Atlixco no. 186, Col Vicentina México, Del. Iztapalapa, A.P. 55-535, C.P. 09340 México D.F., Mexico
| | - A Solé
- Genetics and Microbiology Department, Biosciences Faculty, Universitat Autónoma de Barcelona, Bellaterra, 08193 Barcelona, Spain
| | - E Diestra
- Genetics and Microbiology Department, Biosciences Faculty, Universitat Autónoma de Barcelona, Bellaterra, 08193 Barcelona, Spain
| | - I Esteve
- Genetics and Microbiology Department, Biosciences Faculty, Universitat Autónoma de Barcelona, Bellaterra, 08193 Barcelona, Spain
| | - J F Gutiérrez-Corona
- Departamento de Biología, DCNyE, Universidad de Guanajuato, Apartado Postal 187, Guanajuato, Gto 36000, Mexico
| | - G E Reyna López
- Departamento de Biología, DCNyE, Universidad de Guanajuato, Apartado Postal 187, Guanajuato, Gto 36000, Mexico
| | - F J Fernández
- Departamento de Biotecnología, Universidad Autónoma Metropolitana, Unidad Iztapalapa, Av. San Rafael Atlixco no. 186, Col Vicentina México, Del. Iztapalapa, A.P. 55-535, C.P. 09340 México D.F., Mexico
| | - A Tomasini
- Departamento de Biotecnología, Universidad Autónoma Metropolitana, Unidad Iztapalapa, Av. San Rafael Atlixco no. 186, Col Vicentina México, Del. Iztapalapa, A.P. 55-535, C.P. 09340 México D.F., Mexico.
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Cervantes C, Espino-Saldaña AE, Acevedo-Aguilar F, León-Rodriguez IL, Rivera-Cano ME, Avila-Rodríguez M, Wróbel-Kaczmarczyk K, Wróbel-Zasada K, Gutiérrez-Corona JF, Rodríguez-Zavala JS, Moreno-Sánchez R. [Microbial interactions with heavy metals]. Rev Latinoam Microbiol 2006; 48:203-10. [PMID: 17578093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Living organisms are exposed in nature to heavy metals, commonly present in their ionized species. These ions exert diverse toxic effects on microorganisms. Metal exposure both selects and maintains microbial variants able to tolerate their harmful effects. Varied and efficient metal resistance mechanisms have been identified in diverse species of bacteria, fungi and protists. The study of the interactions between microorganisms and metals may be helpful to understand the relations of toxic metals with higher organisms such as mammals and plants. Some microbial systems of metal tolerance have the potential to be used in biotechnological processes, such as the bioremediation of environmental metal pollution or the recovery of valuable metals. In this work we analyze several examples of the interactions of different types of microbes with heavy metals; these cases are related either with basic research or with possible practical applications.
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Affiliation(s)
- C Cervantes
- IIQB, Universidad Michoacana, Morelia, Mich, México.
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Rangel-Porras RA, Meza-Carmen V, Martinez-Cadena G, Torres-Guzmán JC, González-Hernández GA, Arnau J, Gutiérrez-Corona JF. Molecular analysis of an NAD-dependent alcohol dehydrogenase from the zygomycete Mucor circinelloides. Mol Genet Genomics 2005; 274:354-63. [PMID: 16179992 DOI: 10.1007/s00438-005-0025-4] [Citation(s) in RCA: 18] [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] [Received: 11/21/2004] [Accepted: 06/07/2005] [Indexed: 10/25/2022]
Abstract
NAD-dependent alcohol dehydrogenase (ADH) activity was detected mainly in the cytosol of aerobically cultured mycelium and in anaerobically grown yeast cells of Mucor circinelloides. ADH levels were about 2.5-fold higher in yeast cells than in mycelium; zymogram analysis suggested that the same ADH enzyme is produced in both developmental stages. The enzyme, named ADH1, was purified to homogeneity from yeast cells, using ion-exchange and affinity chromatography. The active ADH1 appears to be a homomeric tetramer of 37,500-kDa subunits. Km values obtained for acetaldehyde, ethanol, NADH and NAD+ indicated that in vivo the enzyme mainly serves to reduce acetaldehyde to ethanol. Amino acid sequences of internal peptides obtained from the purified ADH1 were used to design oligonucleotides that allowed the cloning of the corresponding cDNA by RT-PCR, and the characterization of the genomic DNA sequence. The adh1 ORF is interrupted by two small introns located towards the 5'-end. M. circinelloides adh1 encodes a protein of 348 amino acids, which display moderate to high overall identity to several hypothetical ADH enzymes from the related zygomycete Rhizopus oryzae. adh1 mRNA is expressed at similar levels in aerobic mycelium and anaerobic yeast cells. During exponential growth under aerobic conditions, the level of adh1 transcript was correlated with the glucose concentration in the growth medium.
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MESH Headings
- Acetaldehyde/chemistry
- Alcohol Dehydrogenase/chemistry
- Alcohol Dehydrogenase/genetics
- Amino Acid Sequence
- Base Sequence
- Blotting, Northern
- Blotting, Southern
- Cell-Free System
- Chromatography, Affinity
- Chromatography, Ion Exchange
- Cloning, Molecular
- Culture Media/metabolism
- Cytosol/metabolism
- DNA/chemistry
- DNA, Complementary/metabolism
- Electrophoresis, Polyacrylamide Gel
- Ethanol/chemistry
- Fermentation
- Fungal Proteins/chemistry
- Gene Expression Regulation, Fungal
- Gene Library
- Genes, Fungal
- Introns
- Kinetics
- Molecular Sequence Data
- Molecular Weight
- Mucor/enzymology
- Mucor/genetics
- NAD/chemistry
- NAD/metabolism
- Open Reading Frames
- Peptides/chemistry
- Phylogeny
- Protein Isoforms
- RNA, Messenger/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- Rhizopus/metabolism
- Substrate Specificity
- Time Factors
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Affiliation(s)
- R A Rangel-Porras
- Instituto de Investigación en Biología Experimental Facultad de Química, Universidad de Guanajuato, Noria Alta s/n Apartado Postal 187, 36000, Guanajuato, México
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Zazueta-Sandoval R, Gutiérrez-Corona JF. Developmental and environmental influences in the production of a single NAD-dependent fermentative alcohol dehydrogenase by the zygomycete Mucor rouxii. Arch Microbiol 1999; 172:280-6. [PMID: 10550469 DOI: 10.1007/s002030050781] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [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: 10/28/2022]
Abstract
A soluble NAD-dependent alcohol dehydrogenase (ADH) activity was detected in mycelium and yeast cells of wild-type Mucor rouxii. In the mycelium of cells grown in the absence of oxygen, the enzyme activity was high, whereas in yeast cells, ADH activity was high regardless of the presence or absence of oxygen. The enzyme from aerobically or anaerobically grown mycelium or yeast cells exhibited a similar optimum pH for the oxidation of ethanol to acetaldehyde ( approximately pH 8.5) and for the reduction of acetaldehyde to ethanol (approximately pH 7.5). Zymogram analysis conducted with cell-free extracts of the wild-type and an alcohol-dehydrogenase-deficient mutant strain indicated the existence of a single ADH enzyme that was independent of the developmental stage of dimorphism, the growth atmosphere, or the carbon source in the growth medium. Purified ADH from aerobically grown mycelium was found to be a tetramer consisting of subunits of 43 kDa. The enzyme oxidized primary and secondary alcohols, although much higher activity was displayed with primary alcohols. K(m) values obtained for acetaldehyde, ethanol, NADH(2), and NAD(+) indicated that physiologically the enzyme works mainly in the reduction of acetaldehyde to ethanol.
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Affiliation(s)
- R Zazueta-Sandoval
- Instituto de Investigación en Biología Experimental, Facultad de Química, Universidad de Guanajuato, Apartado Postal 187, Guanajuato, Gto., 36000, México
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