J. Biol. Chem., Vol. 261, Issue 24, 11010-11014, Aug, 1986
Pyridoxal 5'-phosphate-dependent histidine decarboxylase. Nucleotide sequence of the hdc gene and the corresponding amino acid sequence
GL Vaaler, MA Brasch and EE Snell
The nucleotide sequence of a 1.3-kilobase NaeI fragment from Morganella
morganii AM-15 that contains the gene for histidine decarboxylase has been
determined. The gene was initially identified among total chromosomal
digests using a mixed sequence oligonucleotide probe corresponding to amino
acids 11-16 of histidine decarboxylase and then cloned on a 5.5-kilobase
PstI fragment. The structural gene contains 1131 nucleotides and encodes
377 amino acids with the sequence: (sequence: in text). The independently
determined NH2-terminal sequence of this enzyme (Tanase, S., Guirard, B.
M., and Snell, E. E. (1985) J. Biol. Chem. 260, 6738-6746) and the amino
acid sequences of two tryptic peptides reported in the accompanying paper
(Hayashi, H., Tanase, S., and Snell, E. E. (1986) J. Biol. Chem. 261,
11003-11009) are localized in the sequence presented here; the lysine that
binds pyridoxal phosphate is situated at residue 232, whereas the serine
that binds the adduct formed between pyridoxal phosphate and the inhibitor
alpha- fluoromethylhistidine is positioned at residue 322.