Abstract
The isolation of the Saccharomyces cerevisiae gene for NADP-dependent glutamate dehydrogenase (NADP-GDH) by cross hybridization to the Neurospora crassa am gene, known to encode for NADP-GDH is described. Two DNA fragments selected from a yeast genomic library in phage λgt11were shown by restriction analysis to share 2.5 kb of common sequence. A yeast shuttle vector (CV13) carrying either to the cloned fragments complements the gdh − strain of S. cerevisiae and directs substantial overproduction of NADP-GDH. One of the cloned fragments was sequenced, and the deduced amino acid (aa) sequence of the yeast NADP-GDH is 64% homologous to N. crassa, 51% to Escherichia coli and 24% to bovine NADP-GDHs.
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