Analysis of a genetic mutation in an electrophoretic variant of the human lactate dehydrogenase-B(H) subunit.

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Citation

Maekawa M, Sudo K, Kitajima M, Matsuura Y, Li SS, Kanno T

Analysis of a genetic mutation in an electrophoretic variant of the human lactate dehydrogenase-B(H) subunit.

Hum Genet. 1993 Jun;91(5):423-6.

PubMed ID
8314553 [ View in PubMed
]
Abstract

An electrophoretic variant of the lactate dehydrogenase (LDH)-B(H) subunit was discovered in a patient with diabetes mellitus. His LDH activity in serum was slightly lower than normal and the LDH isozyme pattern showed an abnormal migration indicating an LDH-B subunit variant of the fast type. The LDH containing the variant subunit revealed a decreased heat stability. DNA analysis of the variant allele detected a base substitution, an A to G transition, at codon 6 (AAA-->GAA). The mutation resulted in the replacement of a lysine by a glutamic acid (K6E). The change may cause the heat instability and affect the net charge of the variant subunit, resulting in an electrophoretic LDH-B subunit variant of the fast type.

DrugBank Data that Cites this Article

Polypeptides
NameUniProt ID
L-lactate dehydrogenase B chainP07195Details