Jeffery J, Barros-Söderling J, Murray L, Wood I, Hansen R, Szepesi B, Jörnvall H. Glucose-6-phosphate dehydrogenase. Characteristics revealed by the rat liver enzyme structure.
EUROPEAN JOURNAL OF BIOCHEMISTRY 1989;
186:551-6. [PMID:
2606104 DOI:
10.1111/j.1432-1033.1989.tb15242.x]
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Abstract
The primary structure of glucose-6-phosphate dehydrogenase from rat liver has been determined, showing the mature polypeptide to consist of 513 amino acid residues, with an acyl-blocked N-terminus. This structure is homologous to those of both other eutherian and marsupial mammals (human and opossum), thus characterizing a mammalian type enzyme to which the human form, notwithstanding its large number of genetic variants, conforms. The mammalian type differs from the fruit fly enzyme by about 50%. Known mutant forms exhibit further differences, widely distributed along the polypeptide chain. Structural patterns show glucose-6-phosphate dehydrogenases to consist of a few variable regions intermixed with relatively constant segments.
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