THE HIGH-AFFINITY MURINE LAMININ RECEPTOR IS A MEMBER OF A MULTICOPY GENE FAMILY

被引：21

作者：

FERNANDEZ, MT ^{[1
]}

CASTRONOVO, V ^{[1
]}

RAO, CN ^{[1
]}

SOBEL, ME ^{[1
]}

机构：

[1] NCI,PATHOL LAB,TUMOR INVAS & METASTASIS SECT,BETHESDA,MD 20892

来源：

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS | 1991年 / 175卷 / 01期

关键词：

D O I：

10.1016/S0006-291X(05)81203-3

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The high affinity laminin receptor is differentially expressed in metastasis. We now report that there are multiple copies (6±1) of the laminin receptor gene in the murine genome of normal diploid cells as well as in cell lines derived from cancer cells. We have analyzed three distinct cDNA clones isolated from an Okayama-Berg cDNA library of transformed mouse fibroblasts that may represent transcripts of three different laminin receptor genes. Polymorphic changes include insertion of bases at the 5′ terminus, a base substitution within the coding region resulting in an amino acid change from phenylalanine to leucine, a base substitution obliterating a polyadenylation signal, as well as changes in the length of the 3′ untranslated domains. The discovery of multiple transcripts of laminin receptor genes suggests that there is a strong selective pressure to maintain laminin receptor expression in murine cells. © 1991 Academic Press, Inc.

引用

页码：84 / 90

页数：7

共 23 条

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