Pyridoxal is one of the three natural organic compounds, along with pyridoxamine and pyridoxine, that comprise vitamin B6. Each is converted into a single biologically active form, pyridoxal 5-phosphate. IUPAC nomenclature is a system of naming chemical compounds and of describing the science of chemistry in general. ... A chemical formula (also called molecular formula) is a concise way of expressing information about the atoms that constitute a particular chemical compound. ... The molecular mass (abbreviated MM) of a substance, called molecular weight and abbreviated as MW, is the mass of one molecule of that substance, relative to the unified atomic mass unit u (equal to 1/12 the mass of one atom of carbon-12). ... CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences, mixtures and alloys. ... The melting point of a solid is the temperature at which it changes state from solid to liquid. ... The simplified molecular input line entry specification or SMILES is a specification for unambiguously describing the structure of chemical molecules using short ASCII strings. ... An organic compound is any member of a large class of chemical compounds whose molecules contain carbon, with the exception of carbides, carbonates, carbon oxides and gases containing carbon. ... The two major forms of vitamin B6 are pyridoxine and pyridoxamine. ... The two major forms of vitamin B6 are pyridoxine and pyridoxamine. ... Pyridoxine The three major forms of vitamin B6 are pyridoxine, pyridoxal, and pyridoxamine, which, in the liver, are converted to pyridoxal 5-phosphate (PLP) - a cofactor in many reactions of amino acid metabolism. ... Pyridoxal-phosphate (PLP, pyridoxal-5-phosphate) is a cofactor of many enzymatic reactions. ...
In the case of pyridoxal, the 4 position of the parent compound is occupied by a formyl group.
Serine hydroxymethyltransferase is a pyridoxal 5'-phosphate-dependent enzyme which catalyzes the interconversion of serine and glycine, both of which are major sources of one-carbon units necessary for the synthesis of purine nucleotides and thymidylate.
In the liver, pyridoxine, pyridoxal and pyridoxamine are metabolized to pyridoxine 5'-phosphate, pyridoxal 5'-phosphate and pyridoxamine 5'-phosphate, by pyridoxal 5'-phosphate kinase.
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