ExplorEnz: EC 4.1.1.28

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4.1.1.28

Accepted name:

aromatic-L-amino-acid decarboxylase

Reaction:

(1) L-dopa = dopamine + CO₂
(2) 5-hydroxy-L-tryptophan = 5-hydroxytryptamine + CO₂

For diagram of dopa biosynthesis, click here and for diagram of indole and ipecac alkaloid biosynthesis, click here

Glossary:

dopamine = 4-(2-aminoethyl)benzene-1,2-diol
L-dopa = 3,4-dihydroxyphenylalanine

Other name(s):

DOPA decarboxylase; tryptophan decarboxylase; hydroxytryptophan decarboxylase; L-DOPA decarboxylase; aromatic amino acid decarboxylase; 5-hydroxytryptophan decarboxylase; aromatic-L-amino-acid carboxy-lyase (tryptamine-forming)

Systematic name:

aromatic-L-amino-acid carboxy-lyase

Comments:

A pyridoxal-phosphate protein. The enzyme also acts on some other aromatic L-amino acids, including L-tryptophan, L-tyrosine and L-phenylalanine.

Links to other databases:

BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 9042-64-2

References:

1.	Christenson, J.G., Dairman, W. and Udenfriend, S. On the identity of DOPA decarboxylase and 5-hydroxytryptophan decarboxylase (immunological titration-aromatic L-amino acid decarboxylase-serotonin-dopamine-norepinephrine). Proc. Natl. Acad. Sci. USA 69 (1972) 343–347. [DOI] [PMID: 4536745]
2.	Lovenberg, W., Weissbach, H. and Udenfriend, S. Aromatic L-amino acid decarboxylase. J. Biol. Chem. 237 (1962) 89–93. [PMID: 14466899]
3.	McGilvery, R.W. and Cohen, P.P. The decarboxylation of L-phenylalanine by Streptococcus faecalis R. J. Biol. Chem. 174 (1948) 813–816. [PMID: 18871240]
4.	Sekeris, C.E. Zur Tyrosinstoffwechsel der Insekten. XII. Reinigung, Eigenschaften und Substratspezifität der DOPA-Decarboxylase. Hoppe-Seyler's Z. Physiol. Chem. 332 (1963) 70–78. [PMID: 14054806]
5.	Weissbach, H., Bogdanski, D.F., Redfield, B.G. and Udenfriend, S. Studies on the effect of vitamin B₆ on 5-hydroxytryptamine (serotonin) formation. J. Biol. Chem. 227 (1957) 617–624. [PMID: 13462983]

[EC 4.1.1.28 created 1961 (EC 4.1.1.26 and EC 4.1.1.27 both created 1961 and incorporated 1972)]