The laminin-binding activity of the alpha 7 integrin receptor is defined by developmentally regulated splicing in the extracellular domain.
The laminin-binding activity of the alpha 7 integrin receptor is defined by developmentally regulated splicing in the extracellular domain.
复制标题
α7 整联蛋白受体的层粘连蛋白结合活性由胞外域中发育调节的剪接定义。
DOI:
10.1091/mbc.8.9.1723
复制
发表时间:
1997
影响因子:
3.3
通讯作者:
Kramer,RH
中科院分区:
文献类型:
--
作者:
Ziober,BL;Chen,Y;Kramer,RH
The expression pattern of the laminin-binding alpha 7 beta 1 integrin is developmentally regulated in skeletal, cardiac, and smooth muscle. The X1/X2 alternative splicing in the extracellular domain of alpha 7 is found in the variable region between conserved alpha-chain homology repeat domains III and IV, a site implicated in ligand binding. To assess differences in X1/X2 isoform activity, we generated MCF-7 cell lines transfected with alpha 7-X1/X2 cDNAs. Transfectants expressing the alpha 7-X2 variant adhered rapidly to laminin 1, whereas those expressing alpha 7-X1 failed to attach. That alpha 7-X1 exists in an inactive state was established in assays using an activating beta 1 antibody that induced X1-dependent cell adhesion and spreading. Furthermore, the activation of alpha 7-X1 was cell type specific, and when expressed in HT1080 cells, the integrin was converted into a fully functional receptor capable of promoting adhesion. Thus, the expression of the alpha 7-X1/X2 integrin is a novel mechanism that regulates receptor affinity states in a cell-specific context and may modulate integrin-dependent events during muscle development and repair.
登录
查看更多内容
DOI:
10.1002/j.1460-2075.1990.tb08170.x
发表时间:
1990-03
期刊:
The EMBO Journal
影响因子:
--
作者:
'. ShintaroSuzuki;Y. Naitoh
通讯作者:
'. ShintaroSuzuki;Y. Naitoh
DOI:
10.1073/pnas.86.14.5415
发表时间:
1989-07
影响因子:
11.1
作者:
T. H. Kuppevelt;L. Languino;J. Gailit;Susumu Suzuki;E. Ruoslahti
通讯作者:
T. H. Kuppevelt;L. Languino;J. Gailit;Susumu Suzuki;E. Ruoslahti
影响因子:
4.6
作者:
C. Roote;S. Zusman
通讯作者:
C. Roote;S. Zusman
DOI:
10.1016/s0021-9258(19)74380-4
发表时间:
1996
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
M. Gu;Weigwang Wang;W. Song;D. Cooper;S. Kaufman
通讯作者:
S. Kaufman
影响因子:
4
作者:
Song,WK;Wang,W;Sato,H;Bielser,DA;Kaufman,SJ
通讯作者:
Kaufman,SJ