Cloning and comparative mapping of a gene from the commonly deleted region of DiGeorge and Velocardiofacial syndromes conserved in C. elegans |
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| Authors: | P. Rizzu E. A. Lindsay C. Taylor H. O’Donnell A. Levy P. Scambler A. Baldini |
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| Affiliation: | (1) Department of Molecular and Human Genetics, Baylor College of Medicine, 1 Baylor Plaza, T936, Houston, Texas 77030, USA, US;(2) Molecular Medicine Unit, Institute of Child Health, 30, Guilford St., London WC1N 1EH, UK, GB;(3) Department of Medical Genetics, and INSERM U406, Hopital d'enfants de la Timone, Marseilles, France, FR |
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| Abstract: | We have identified and cloned a gene, ES2, encoding a putative 476 amino acid protein with a predicted M r of 52,568. The gene is localized within the DiGeorge/Velocardiofacial syndrome locus on 22q11.2 and is deleted in all the patients in which a deletion within 22q11 could be demonstrated, with the exception of one patient. ES2 is expressed in all the tissues studied. Sequence comparison showed identity with five ESTs and at the amino acid level the sequence was highly similar to, and collinear with, a hypothetical C. elegans protein of unknown function. Mutation analysis was performed in 16 patients without deletion, but no mutation has been found. The cDNA sequence is conserved in mouse and is localized on MMU16B1-B3, known to contain a syntenic group in common with HSA 22q11.2. Received: 25 March 1996 / Accepted: 15 May 1996 |
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