小鼠平滑素基因Smtn的结构和染色体定位。

S Rensen, G Merkx, P Doevendans, A Geurts Van Kessel, G van Eys
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引用次数: 12

摘要

平滑蛋白是在可收缩的平滑肌中发现的细胞骨架相关蛋白。已经确定了两种同种异构体:在内脏组织中表达的平滑素- a和在血管组织中发现的平滑素- b。小鼠平滑素基因(Smtn)被分离并鉴定。荧光原位杂交将其定位于11号染色体A2-A3带。该基因由20个外显子组成,全长23 kb。其结构在鼠与人之间是保守的。smoothelin-A和smoothelin-B的近端启动子都包含几个转录因子结合位点,但缺乏一致的TATA盒。
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Structure and chromosome location of Smtn, the mouse smoothelin gene.

Smoothelins are cytoskeleton-associated proteins that are found in contractile smooth muscle. Two isoforms have been identified: smoothelin-A, expressed in visceral tissues and smoothelin-B, found in vascular tissues. The mouse smoothelin gene (Smtn) was isolated and characterized. It was assigned to chromosome 11 band A2-A3 by fluorescence in situ hybridization. The gene consists of 20 exons and spans 23 kb. Its structure is conserved between mouse and human. The proximal promoter of both smoothelin-A and smoothelin-B contains several transcription factor-binding sites but lacks a consensus TATA box.

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