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FEBS Lett. 1992 Jun 8;304(1):83-8.

Molecular cloning of the cDNAs coding for the two subunits of soluble guanylyl cyclase from human brain.

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Unité INSERM 99, Hôpital Henri Mondor, Créteil, France.


Complementary DNA clones corresponding to the 70 and 82 kDa subunits of soluble guanylyl cyclase from human adult brain have been isolated and sequenced. Their respective open reading frames correspond to 619 amino acids (M(r) 70,469) and 717 amino acids (M(r) 81,324). Southern blots of human genomic DNA using these clones as probes give patterns which might be compatible with the presence of more than one copy per gene, or pseudogenes, for each subunit in the human genome. Comparison of the protein sequence of the large subunit from adult brain with the subunit cloned from human fetal brain (Harteneck, C., Wedel, B., Koesling, D., Malekewitz, J., Böhme, E., and Schultz, G. (1991) FEBS Lett. 292, 217-222) revealed only 34% homology. This result demonstrates the existence of a novel large subunit isoform for soluble guanylyl cyclase in human tissues.

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