IUBMB Enzyme Nomenclature

EC 6.2.1.72

Accepted name: L-serine—[L-seryl-carrier protein] ligase

Reaction: ATP + L-serine + holo-[L-seryl-carrier protein] = AMP + diphosphate + L-seryl-[L-seryl-carrier protein] (overall reaction)
(1a) ATP + L-serine = diphosphate + (L-seryl)adenylate
(1b) (L-seryl)adenylate + holo-[L-seryl-carrier protein] = AMP + L-seryl-[L-seryl-carrier protein]

Other name(s): entF (gene name); zmaJ (gene name); gdnB (gene name); serine-activating enzyme

Systematic name: L-serine:[L-seryl-carrier protein] ligase (AMP-forming)

Comments: The adenylation domain of the enzyme catalyses the activation of L-serine to (L-seryl)adenylate, followed by the transfer of the activated compound to the free thiol of a phosphopantetheine arm of a peptidyl-carrier protein domain. The peptidyl-carrier protein domain may be part of the same protein, or of a different protein. This activity is often found as part of a larger non-ribosomal peptide synthase.

Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number:

References:

1. Pettis, G.S. and McIntosh, M.A. Molecular characterization of the Escherichia coli enterobactin cistron entF and coupled expression of entF and the fes gene. J. Bacteriol. 169 (1987) 4154-4162. [PMID: 3040679]

2. Rusnak, F., Sakaitani, M., Drueckhammer, D., Reichert, J. and Walsh, C.T. Biosynthesis of the Escherichia coli siderophore enterobactin: sequence of the entF gene, expression and purification of EntF, and analysis of covalent phosphopantetheine. Biochemistry 30 (1991) 2916-2927. [PMID: 1826089]

3. Reichert, J., Sakaitani, M. and Walsh, C.T. Characterization of EntF as a serine-activating enzyme. Protein Sci. 1 (1992) 549-556. [PMID: 1338974]

4. Ehmann, D.E., Shaw-Reid, C.A., Losey, H.C. and Walsh, C.T. The EntF and EntE adenylation domains of Escherichia coli enterobactin synthetase: sequestration and selectivity in acyl-AMP transfers to thiolation domain cosubstrates. Proc. Natl. Acad. Sci. USA 97 (2000) 2509-2514. [PMID: 10688898]

5. Chan, Y.A., Boyne, M.T., 2nd, Podevels, A.M., Klimowicz, A.K., Handelsman, J., Kelleher, N.L. and Thomas, M.G. Hydroxymalonyl-acyl carrier protein (ACP) and aminomalonyl-ACP are two additional type I polyketide synthase extender units. Proc. Natl. Acad. Sci. USA 103 (2006) 14349-14354. [PMID: 16983083]

6. Frueh, D.P., Arthanari, H., Koglin, A., Vosburg, D.A., Bennett, A.E., Walsh, C.T. and Wagner, G. Dynamic thiolation-thioesterase structure of a non-ribosomal peptide synthetase. Nature 454 (2008) 903-906. [PMID: 18704088]

[EC 6.2.1.72 created 2021]


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