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Enzymatic activation of sulfur for incorporation into biomolecules in prokaryotes
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Enzymatic activation of sulfur for incorporation into biomolecules in prokaryotes
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Journal Article
Enzymatic activation of sulfur for incorporation into biomolecules in prokaryotes
2006
Overview
Sulfur is a functionally important element of living matter. Incorporation into biomolecules occurs by two basic strategies. Sulfide is added to an activated acceptor in the biosynthesis of cysteine, from which methionine, coenzyme A and a number of biologically important thiols can be constructed. By contrast, the biosyntheses of iron sulfur clusters, cofactors such as thiamin, molybdopterin, biotin and lipoic acid, and the thio modification of tRNA require an activated sulfur species termed persulfidic sulfur (R-S-SH) instead of sulfide. Persulfidic sulfur is produced enzymatically with the IscS protein, the SufS protein and rhodanese being the most prominent biocatalysts. This review gives an overview of sulfur incorporation into biomolecules in prokaryotes with a special emphasis on the properties and the enzymatic generation of persulfidic sulfur as well as its use in biosynthetic pathways.
Publisher
Oxford, UK : Blackwell Publishing Ltd,Blackwell Publishing Ltd,Blackwell,Oxford University Press
Subject
Bacterial Proteins - metabolism
/ Biological and medical sciences
/ Biotin
/ Enzyme Precursors - metabolism
/ Fundamental and applied biological sciences. Psychology
/ Prokaryotic Cells - enzymology
/ prokaryotic sulfur metabolism
/ Proteins
/ Pyridoxal Phosphate - metabolism
/ Sulfides
/ Sulfur
/ Sulfur Compounds - metabolism
/ Thiamine
/ Thiols
/ tRNA
/ tRNA Ala
