Prokaryotic and eukaryotic monothiol glutaredoxins are able to perform the functions of Grx5 in the biogenesis of Fe/S clusters in yeast mitochondria.
The Saccharomyces cerevisiae monothiol glutaredoxin Grx5 participates in the mitochondrial biogenesis of iron-sulfur clusters. Grx5 homologues exist in organisms from bacteria to humans. Chicken (cGRX5) and human (hGRX5) homologues contain a mitochondrial targeting sequence, suggesting a mitochondrial localization for these two proteins. We have compartmentalized the Escherichia coli and Synechocystis sp. homologues, and also cGRX5 and hGRX5, in the mitochondrial matrix of a yeast grx5 mutant. All four heterologous proteins rescue the defects of the mutant. The chicken cGRX5 gene was significantly expressed throughout the embryo stages in different tissues. These results underline the functional conservation of Grx5 homologues throughout evolution.
Departament de Ciències Mèdiques Bàsiques, Facultat de Medicina, Universitat de Lleida, Montserrat Roig 2, 25008-Lleida, Spain.
Maria Micaela
MM
Molina-Navarro
Celia
C
Casas
Lidia
L
Piedrafita
Gemma
G
Bellí
Enrique
E
Herrero
D000818:Animals; D001426:Bacterial Proteins / Q000235:genetics / Q000378:metabolism*; D002642:Chick Embryo / Q000166:cytology / Q000201:enzymology; D002645:Chickens / Q000235:genetics* / Q000378:metabolism; D004926:Escherichia coli / Q000201:enzymology* / Q000235:genetics; D019143:Evolution, Molecular; D015870:Gene Expression / Q000235:genetics; D018507:Gene Expression Regulation, Developmental / Q000502:physiology; D054477:Glutaredoxins; D008928:Mitochondria / Q000201:enzymology* / Q000235:genetics; D009154:Mutation; D009928:Organ Specificity / Q000502:physiology; D010088:Oxidoreductases / Q000235:genetics / Q000378:metabolism*; D012441:Saccharomyces cerevisiae / Q000201:enzymology* / Q000235:genetics; D046939:Synechocystis / Q000201:enzymology* / Q000235:genetics
D001426:Bacterial Proteins; D054477:Glutaredoxins; D010088:Oxidoreductases