Journal
FEBS LETTERS
Volume 588, Issue 4, Pages 531-537Publisher
WILEY
DOI: 10.1016/j.febslet.2013.12.033
Keywords
Molybdenum cofactor; L-cysteine desulfurase; Formate dehydrogenase; Chaperone; bis-MGD
Funding
- DFG [LE1171/6-1]
- DFG cluster of excellence [EXC314]
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Molybdoenzymes are complex enzymes in which the molybdenum cofactor (Moco) is deeply buried in the enzyme. Most molybdoenzymes contain a specific chaperone for the insertion of Moco. For the formate dehydrogenase FdsGBA from Rhodobacter capsulatus the two chaperones FdsC and FdsD were identified to be essential for enzyme activity, but are not a subunit of the mature enzyme. Here, we purified and characterized the FdsC protein after heterologous expression in Escherichia coli. We were able to copurify FdsC with the bound Moco derivate bis-molybdopterin guanine dinucleotide. This cofactor successfully was used as a source to reconstitute the activity of molybdoenzymes. Structured summary of protein interactions: FdsC and FdsC bind by molecular sieving (View interaction) FdsD binds to RcMobA by surface plasmon resonance (View interaction) FdsC binds to RcMobA by surface plasmon resonance (View interaction) FdsC binds to FdsA by surface plasmon resonance (View interaction) (C) 2014 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
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