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人类MUC5AC粘蛋白基因3'区域的基因组组织:11p15.5粘蛋白基因家族存在共同祖先基因的更多证据。

Genomic organization of the 3'-region of the human MUC5AC mucin gene: additional evidence for a common ancestral gene for the 11p15.5 mucin gene family.

作者信息

Buisine M P, Desseyn J L, Porchet N, Degand P, Laine A, Aubert J P

机构信息

INSERM Unité 377, Place de Verdun, 59045 Lille Cedex, France.

出版信息

Biochem J. 1998 Jun 15;332 ( Pt 3)(Pt 3):729-38. doi: 10.1042/bj3320729.

Abstract

The human mucin gene MUC5AC is mapped clustered with MUC2, MUC5B and MUC6 on chromosome 11p15.5. We report here the isolation and characterization of a genomic cosmid clone, designated ELO9, spanning the 3'-region of MUC5AC and the 5'-region of MUC5B, allowing us to conclude that MUC5AC and MUC5B have the same transcriptional orientation. We determined the genomic organization and the entire sequence of the 3'-region of MUC5AC. The comparative molecular analysis of MUC5AC and MUC5B points to a remarkable similarity in the size and the distribution of exons, and in the type of splice sites, supporting the notion that MUC5AC and MUC5B have evolved from a single common ancestral gene. The derivation of the four genes of the 11p15.5 mucin gene family from a single ancestral gene is discussed.

摘要

人类黏蛋白基因MUC5AC定位于11号染色体p15.5上,与MUC2、MUC5B和MUC6成簇排列。我们在此报告一个基因组黏粒克隆ELO9的分离和特性,该克隆跨越MUC5AC的3'区域和MUC5B的5'区域,使我们能够得出MUC5AC和MUC5B具有相同转录方向的结论。我们确定了MUC5AC 3'区域的基因组结构和完整序列。MUC5AC和MUC5B的比较分子分析表明,外显子的大小和分布以及剪接位点类型具有显著相似性,支持MUC5AC和MUC5B是从单一共同祖先基因进化而来的观点。本文讨论了11p15.5黏蛋白基因家族的四个基因从单一祖先基因的衍生情况。

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