ECB-ART-35837
Gene
1995 Jan 23;1522:205-8. doi: 10.1016/0378-1119(94)00719-9.
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Cloning and characterization of a developmentally regulated sea urchin cDNA encoding glutamine synthetase.
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A 2935-bp cDNA clone encoding glutamine synthetase (GS) was isolated from a cDNA library prepared from four-blastomere Paracentrotus lividus sea urchin embryos. The sequence consists of a 75-bp 5'' untranslated region (5''-UTR) followed by a 1095-bp coding region corresponding to a 365-amino-acid (aa) protein, a 1747-bp 3''-UTR and a terminal 18-bp poly(A) tail. The encoded protein shows about 66% identical residues, as compared with human and lobster class-II GS. The sequence contains the Mn(2+)-binding aa and the highly conserved aa regions observed in other GS. Northern blot analyses show that the GS mRNA is present in the sea urchin egg and is developmentally regulated in the embryo.
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Genes referenced: glul LOC100887844