IUBMB Enzyme Nomenclature


Accepted name: aminodeoxychorismate lyase

Reaction: 4-amino-4-deoxychorismate = 4-aminobenzoate + pyruvate

For diagram of reaction click here (folate biosynthesis).

Other name(s): enzyme X; 4-amino-4-deoxychorismate lyase; 4-amino-4-deoxychorismate pyruvate-lyase

Systematic name: 4-amino-4-deoxychorismate pyruvate-lyase (4-aminobenzoate-forming)

Comments: A pyridoxal-phosphate protein. Forms part of the folate biosynthesis pathway. Acts on 4-amino-4-deoxychorismate, the product of EC, aminodeoxychorismate synthase, to form p-aminobenzoate.

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, CAS registry number: 132264-33-6


1. Ye, Q.Z., Liu, J. and Walsh, C.T. p-Aminobenzoate synthesis in Escherichia coli: purification and characterization of PabB as aminodeoxychorismate synthase and enzyme X as aminodeoxychorismate lyase. Proc. Natl. Acad. Sci. USA 87 (1990) 9391-9395. [PMID: 2251281]

2. Green, J.M., Merkel, W.K. and Nichols, B.P. Characterization and sequence of Escherichia coli pabC, the gene encoding aminodeoxychorismate lyase, a pyridoxal phosphate-containing enzyme. J. Bacteriol. 174 (1992) 5317-5323. [PMID: 1644759]

3. Nakai, T., Mizutani, H., Miyahara, I., Hirotsu, K., Takeda, S., Jhee, K.H., Yoshimura, T. and Esaki, N. Three-dimensional structure of 4-amino-4-deoxychorismate lyase from Escherichia coli. J. Biochem. 128 (2000) 29-38. [PMID: 10876155]

[EC created 2003]

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