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Rubredoxin | |||||||||
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![]() rubredoxin domain ii from pseudomonas oleovorans | |||||||||
Identifiers | |||||||||
Symbol | Rubredoxin | ||||||||
Pfam | PF00301 | ||||||||
Pfam clan | CL0045 | ||||||||
InterPro | IPR004039 | ||||||||
PROSITE | PDOC00179 | ||||||||
SCOP2 | 7rxn / SCOPe / SUPFAM | ||||||||
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Rubredoxins are a class of low-molecular-weight iron-containing proteins found in sulfur-metabolizing bacteria and archaea. Sometimes rubredoxins are classified as iron-sulfur proteins; however, in contrast to iron-sulfur proteins, rubredoxins do not contain inorganic sulfide. Like cytochromes, ferredoxins and Rieske proteins, rubredoxins are thought to participate in electron transfer in biological systems. Recent work in bacteria[1] and algae[2] have led to the hypothesis that some rubredoxins may instead have a role in delivering iron to metalloproteins.