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Literature DB >> 14342514

THE CONVERSION OF PYRIDOXINE PHOSPHATE INTO PYRIDOXAL PHOSPHATE IN ESCHERICHIA COLI.

Abstract

1. Evidence is presented for the presence of pyridoxine phosphate oxidase in aqueous extracts of Escherichia coli. Some comparison is made with pyridoxamine phosphate oxidase. 2. Isoniazid and iproniazid were found to combine with pyridoxal phosphate, but isoniazid did not combine with either pyridoxamine phosphate or pyridoxine phosphate. Both oxidase activities were somewhat inhibited by benzylamine and putrescine, but not by phenethylamine or cadaverine. 3. The significance of pyridoxine phosphate oxidase in cell metabolism is discussed.

Entities: Chemical Disease Species

Keywords: AMINES; BIOCHEMISTRY; ENZYME INHIBITORS; ESCHERICHIA COLI; EXPERIMENTAL LAB STUDY; IPRONIAZID; ISONIAZID; METABOLISM; OXIDOREDUCTASES; PHOSPHATES; PYRIDOXAL PHOSPHATE; PYRIDOXINE

Mesh：

Substances：

Year: 1965 PMID： 14342514 PMCID： PMC1206805 DOI： 10.1042/bj0950775

Source DB: PubMed Journal: Biochem J ISSN： 0264-6021 Impact factor: 3.857

13 in total

THE CONVERSION OF PYRIDOXINE PHOSPHATE INTO PYRIDOXAL PHOSPHATE IN ESCHERICHIA COLI.

1. The enzymatic oxidation of pyridoxine and pyridoxamine phosphates.

2. An enzymic method for the estimation of L-tryptophan.

3. Chemical structure in relation to biological activities of vitamin B6.

4. Pyridoxamine phosphate-oxidase and pyridoxal phosphate-phosphatase activities in Escherichia coli.

5. Pyridoxamine phosphate transaminase.

6. Enzymatic oxidation of pyridoxamine phosphate to pyridoxal phosphate in rabbit liver.

7. The mechanism of the inhibition of decarboxylase by isonicotinyl hydrazide.

8. Apparent ionization constants, spectral properties and metal chelation of the cotransaminases and related compounds.

9. Studies on the coenzyme activation of glutamic-aspartic apotransaminase.

10. PIG HEART GLUTAMIC ASPARTIC TRANSAMINASE MECHANISM OF TRANSAMINATION.

1. Synthesis of Pyridoxine by a Pyridoxal Auxotroph of Escherichia coli.

2. Kinetic limitation and cellular amount of pyridoxine (pyridoxamine) 5'-phosphate oxidase of Escherichia coli K-12.