A fourth malate dehydrogenase (MDH) locus in cucumber
1995
Knerr, L.D. | Meglic, V. | Staub, J.E.
A new malate dehydrogenase (MDH) locus (Mdh) was identified in cucumber (Cucumis sativus L.) by using an extraction buffer containing sucrose and 2-mercaptoethanol. This fourth locus localizes on starch gels between the previously described Mdh-2 and Mdh-3 loci, necessitating the renaming of existing loci. Given previous MDH nomenclature in cucumber, this locus should be Mdh-3, and the former Mdh-3 is more correctly labeled Mdh-4.Mdh-x designates the interlocus heteromer formed between Mdh-2 and Mdh-4. Interpreting our data in terms of previous work, we hypothesize that Mdh-1 codes for a microbody isozyme; Mdh-2, Mdh-4, and Mdh-x code for cytosolic isozymes; and Mdh-3 codes for a mitochondrial isozyme.
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