Citrate lyase catalyses the magnesium-dependent cleavage of citrate to acetate and oxaloacetate. In bacteria, this reaction is involved in citrate fermentation. The bacterial enzyme is composed of three subunits: alpha, beta and gamma. Catalytic activity resides on the alpha- and beta-subunits, whereas the gamma-subunit serves as an acyl carrier protein (ACP) [1]. Mammalian citrate lyase beta proteins display similarity to the bacterial enzymes [2].
Goulding CW, Bowers PM, Segelke B, Lekin T, Kim CY, Terwilliger TC, Eisenberg D.
The structure and computational analysis of Mycobacterium tuberculosis protein CitE suggest a novel enzymatic function.
J. Mol. Biol. 365 2007 275-83
[PubMed: 17064730] http://dx.doi.org/10.1016/j.jmb.2006.09.086