The peptide sequences near the bound pyridoxal phosphate are conserved in serine dehydratase from rat liver, and threonine dehydratases from yeast and Escherichia coli.
The blocked amino-terminal residue of rat liver serine dehydratase was shown to be acetylalanine by analysis of an isolated amino-terminal peptide after digestion with acylamino acid-releasing enzyme. Digestion of the borohydride-reduced, carboxymethylated enzyme with lysyl endopeptidase yielded a single epsilon-N-pyridoxyllysine-containing peptide, whose sequence is Met-Asp-Ser-Ser-Gln-Pro-Ser-Gly-Ser-Phe-Lys(Pxy)-Ile-Arg-Gly- His-Leu-Cys(Cm)-Lys. This peptide comprises residues 30-49 of the cDNA-deduced amino acid sequence. The sequence of seven amino acids around the bound pyridoxal phosphate is highly conserved in serine dehydratase from rat liver, and threonine dehydratases from yeast and Escherichia coli.
Ogawa
H
H
Department of Biochemistry, Toyama Medical and Pharmaceutical University, Faculty of Medicine, Japan.
Konishi
K
K
Fujioka
M
M
D000595:Amino Acid Sequence; D000818:Animals; D001665:Binding Sites; D002851:Chromatography, High Pressure Liquid; D004926:Escherichia coli / Q000201:enzymology; D012695:L-Serine Dehydratase / Q000032:analysis*; D008099:Liver / Q000201:enzymology; D008969:Molecular Sequence Data; D010446:Peptide Fragments / Q000032:analysis; D011732:Pyridoxal Phosphate; D051381:Rats; D012441:Saccharomyces cerevisiae / Q000201:enzymology; D013913:Threonine Dehydratase / Q000032:analysis*
D010446:Peptide Fragments; D011732:Pyridoxal Phosphate; D012695:L-Serine Dehydratase; D013913:Threonine Dehydratase