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4wbd

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The crystal structure of BshC from Bacillus subtilis complexed with citrate and ADP

Structural highlights

4wbd is a 1 chain structure with sequence from Bacillus subtilis subsp. subtilis str. 168. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.77Å
Ligands:	, ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

BSHC_BACSU Involved in bacillithiol (BSH) biosynthesis. May catalyze the last step of the pathway, the addition of cysteine to glucosamine malate (GlcN-Mal) to generate BSH.[HAMAP-Rule:MF_01867]^[1]

Publication Abstract from PubMed

Bacillithiol is produced by many Gram-positive bacteria via a pathway utilizing the enzymes BshA, BshB, and BshC. Here we report the 1.77 A resolution crystal structure of BshC, the putative cysteine ligase in bacillithiol production. The structure reveals that BshC contains a core Rossmann fold with connecting peptide motifs (CP1 and CP2) and a unique alpha-helical coiled-coil domain that facilitates dimerization. The model contains citrate and glycerol in the canonical active site and ADP in a second binding pocket. The overall structure and bound ligands give insight into the function of this unique enzyme.

X-ray Crystallographic Structure of BshC, a Unique Enzyme Involved in Bacillithiol Biosynthesis.,VanDuinen AJ, Winchell KR, Keithly ME, Cook PD Biochemistry. 2014 Dec 18. PMID:25496067^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Gaballa A, Newton GL, Antelmann H, Parsonage D, Upton H, Rawat M, Claiborne A, Fahey RC, Helmann JD. Biosynthesis and functions of bacillithiol, a major low-molecular-weight thiol in Bacilli. Proc Natl Acad Sci U S A. 2010 Apr 6;107(14):6482-6. doi:, 10.1073/pnas.1000928107. Epub 2010 Mar 22. PMID:20308541 doi:http://dx.doi.org/10.1073/pnas.1000928107
↑ VanDuinen AJ, Winchell KR, Keithly ME, Cook PD. X-ray Crystallographic Structure of BshC, a Unique Enzyme Involved in Bacillithiol Biosynthesis. Biochemistry. 2014 Dec 18. PMID:25496067 doi:http://dx.doi.org/10.1021/bi501394q