Structural highlights
Function
LARB_LACPL Involved in the biosynthesis of a nickel-pincer cofactor ((SCS)Ni(II) pincer complex). Carboxylates the pyridinium ring of nicotinic acid adenine dinucleotide (NaAD) and cleaves the phosphoanhydride bond to release AMP and generate pyridinium-3,5-biscarboxylic acid mononucleotide (P2CMN) (PubMed:27114550). LarB can hydrolyze NaAD directly or it first forms an adduct with NaAD that releases AMP and reacts with bicarbonate/CO2 to generate P2CMN (PubMed:27114550). Is required for the activation of the lactate racemase LarA (PubMed:24710389). May also be involved in the activation of other nickel-pincer cofactor-dependent enzymes (PubMed:27114550).[1] [2]
References
- ↑ Desguin B, Goffin P, Viaene E, Kleerebezem M, Martin-Diaconescu V, Maroney MJ, Declercq JP, Soumillion P, Hols P. Lactate racemase is a nickel-dependent enzyme activated by a widespread maturation system. Nat Commun. 2014 Apr 7;5:3615. doi: 10.1038/ncomms4615. PMID:24710389 doi:http://dx.doi.org/10.1038/ncomms4615
- ↑ Desguin B, Soumillion P, Hols P, Hausinger RP. Nickel-pincer cofactor biosynthesis involves LarB-catalyzed pyridinium carboxylation and LarE-dependent sacrificial sulfur insertion. Proc Natl Acad Sci U S A. 2016 May 17;113(20):5598-603. doi:, 10.1073/pnas.1600486113. Epub 2016 Apr 25. PMID:27114550 doi:http://dx.doi.org/10.1073/pnas.1600486113
