Pyridoxal phosphate

Pyridoxal phosphate is the active form of vitamin B6, acts as an inhibitor of reverse transcriptases, and is used for the treatment of tardive dyskinesia.

Signaling Pathways >> Anti-infection >> Reverse Transcriptase

Research Areas >> Neurological Disease

Natural Products >> Others

Human Endogenous Metabolite

Pyridoxal 5′-phosphate severely inhibits the DNA Polymerase and RNase H. Pyridoxal phosphate results in an imnediate reduction in the rate of DNA synthesis[1]. Conjugation to pyridoxal phosphate fully inhibits NEIL2. Pyridoxal phosphate-conjugated NEIL2 shows much lower activity than the intact enzyme over a wide range of enzyme/substrate ratios. After Pyridoxal phosphate conjugation, the ability of NEIL2 to bind the THF-ligand is completely lost[2].

[1]. Modak MJ. Pyridoxal 5' phosphate: a selective inhibitor of oncornaviral DNA polymerases. Biochem Biophys Res Commun. 1976 Jul 12;71(1):180-7.

[2]. Grin IR, et al. Inactivation of NEIL2 DNA glycosylase by pyridoxal phosphate reveals a loop important for substrate binding. Biochem Biophys Res Commun. 2010 Mar 26;394(1):100-5.

3-Methyladenine | Hydrocortisone | Acetylcysteine(N-acetylcysteine) | Retinoic acid | Melatonine | Dinoprostone | Nicotinamide | Adenosine triphosphate | 4-Acetamidophenol | Prostaglandin E1 | Dehydroepiandrosterone | Corticosterone | Progesterone | Docosahexaenoic Acid | NAD+

MOLECULAR FORMULA :

C8-H10-N-O6-P

MOLECULAR WEIGHT :

247.16

WISWESSER LINE NOTATION :

T6NJ B1 CQ DVH E1OPQQO

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

5900 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Subcutaneous

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

850 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

4640 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Subcutaneous

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

870 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Intravenous

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

530 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Intramuscular

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

1150 mg/kg

TOXIC EFFECTS :

Behavioral - antipsychotic

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Mammal - species unspecified

DOSE/DURATION :

>3 gm/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Subcutaneous

SPECIES OBSERVED :

Mammal - species unspecified

DOSE/DURATION :

550 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

MUTATION DATA

TYPE OF TEST :

DNA damage

TEST SYSTEM :

Bacteria - Escherichia coli

DOSE/DURATION :

50 umol/L

REFERENCE :

FEPRA7 Federation Proceedings, Federation of American Societies for Experimental Biology. (Bethesda, MD) V.1-46, 1942-87. Volume(issue)/page/year: 34,530,1975 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X3949 No. of Facilities: 577 (estimated) No. of Industries: 2 No. of Occupations: 5 No. of Employees: 5538 (estimated) No. of Female Employees: 3978 (estimated)