IUBMB Enzyme Nomenclature


Accepted name: citrate lyase holo-[acyl-carrier protein] synthase

Reaction: 2'-(5-triphosphoribosyl)-3'-dephospho-CoA + apo-[citrate (pro-3S)-lyase] = diphosphate + holo-[citrate (pro-3S)-lyase]

For diagram of reaction, click here

Other name(s): 2'-(5''-phosphoribosyl)-3'-dephospho-CoA transferase; 2'-(5''-triphosphoribosyl)-3'-dephospho-CoA:apo-citrate lyase; CitX; holo-ACP synthase (ambiguous); 2'-(5''-triphosphoribosyl)-3'-dephospho-CoA:apo-citrate lyase adenylyltransferase; 2'-(5''-triphosphoribosyl)-3'-dephospho-CoA:apo-citrate lyase 2'-(5''-triphosphoribosyl)-3'-dephospho-CoA transferase; 2'-(5''-triphosphoribosyl)-3'-dephospho-CoA:apo-citrate-lyase adenylyltransferase; holo-citrate lyase synthase (incorrect); 2'-(5-triphosphoribosyl)-3'-dephospho-CoA:apo-citrate-lyase 2'-(5-phosphoribosyl)-3'-dephospho-CoA-transferase

Systematic name: 2'-(5-triphosphoribosyl)-3'-dephospho-CoA:apo-[citrate (pro-3S)-lyase] 2'-(5-phosphoribosyl)-3'-dephospho-CoA-transferase

Comments: The γ-subunit of EC, citrate (pro-3S) lyase, serves as an acyl-carrier protein (ACP) and contains the cofactor 2'-(5-triphosphoribosyl)-3'-dephospho-CoA [1,3]. Synthesis and attachment of the cofactor requires the concerted action of this enzyme and EC, triphosphoribosyl-dephospho-CoA synthase [1]. In the enzyme from Escherichia coli, the cofactor is attached to serine-14 of the ACP via a phosphodiester bond.

Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 312492-44-7


1. Schneider, K., Dimroth, P. and Bott, M. Biosynthesis of the prosthetic group of citrate lyase. Biochemistry 39 (2000) 9438-9450. [PMID: 10924139]

2. Schneider, K., Dimroth, P. and Bott, M. Identification of triphosphoribosyl-dephospho-CoA as precursor of the citrate lyase prosthetic group. FEBS Lett. 483 (2000) 165-168. [PMID: 11042274]

3. Schneider, K., Kästner, C.N., Meyer, M., Wessel, M., Dimroth, P. and Bott, M. Identification of a gene cluster in Klebsiella pneumoniae which includes citX, a gene required for biosynthesis of the citrate lyase prosthetic group. J. Bacteriol. 184 (2002) 2439-2446. [PMID: 11948157]

[EC created 2002, modified 2008, modified 2023]

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