J. Biol. Chem., Vol. 266, Issue 25, 16448-16452, Sep, 1991
Functional cloning of a Dictyostelium discoideum cDNA encoding GMP synthetase
MM Van Lookeren Campagne, J Franke and RH Kessin
Department of Anatomy and Cell Biology, College of Physicians and Surgeons, Columbia University, New York, New York 10032.
A functional cloning procedure has been used to recover a cDNA coding for
the GMP synthetase of Dictyostelium discoideum. The enzyme is encoded by a
single gene, which is actively transcribed during growth, but not during
development. The open reading frame encodes a protein of 718 amino acids
with a predicted molecular mass of 79.6 kDa. The Dictyostelium enzyme has
extensive homology with the GMP synthetase of Escherichia coli and regional
homology to other glutamine amidotransferases.