Alternatively spliced exon 5 of the FERM domain of protein 4.1R encodes a novel binding site for erythrocyte p55 and is critical for membrane targeting in epithelial cells.
Alternatively spliced exon 5 of the FERM domain of protein 4.1R encodes a novel binding site for erythrocyte p55 and is critical for membrane targeting in epithelial cells.
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蛋白质 4.1R FERM 结构域的选择性剪接外显子 5 编码红细胞 p55 的新结合位点,对于上皮细胞中的膜靶向至关重要。
DOI:
10.1016/j.bbamcr.2008.09.012
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发表时间:
2009
期刊:
影响因子:
--
通讯作者:
Chishti,AtharH
中科院分区:
文献类型:
--
作者:
Seo,Pil-Soo;Jeong,Jong-Jin;Zeng,Lixiao;Takoudis,ChristosG;Quinn,BrendanJ;Khan,AnwarA;Hanada,Toshihiko;Chishti,AtharH
Direct physical linkage of MAGUKs to the actin cytoskeleton was first established by the interaction of erythrocyte p55 with the FERM domain of protein 4.1R. Subsequently, it was reported that p55 binds to a 51-amino acid peptide, encoded by exon 10, located within the FERM domain of protein 4.1R. In this study, we investigated the nature of the p55–FERM domain binding interface and show that p55 binds to a second 35-amino acid peptide, encoded by an alternatively spliced exon 5, located within the FERM domain of protein 4.1R. Competition and Surface Plasmon Resonance-binding measurements suggest that the peptides encoded by exons 5 and 10 bind to independent sites within the D5 domain of p55. Interestingly, the full length 135 kDa isoform of protein 4.1R containing both exons 5 and 10 was targeted exclusively to the plasma membrane of epithelial cells whereas the same isoform without exon 5 completely lost its membrane localization capacity. Together, these results indicate that p55 binds to two distinct sites within the FERM domain, and the alternatively spliced exon 5 is necessary for the membrane targeting of protein 4.1R in epithelial cells. Since sequences similar to the exon 5-peptide of protein 4.1R and D5 domain of p55 are conserved in many proteins, our findings suggest that a similar mechanism may govern the membrane targeting of other FERM domain containing proteins.
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DOI:
10.1016/s0021-9258(17)37012-6
发表时间:
1994-03
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
S. Marfatia;R. Lue;Daniel Branton;A. Chishti
通讯作者:
S. Marfatia;R. Lue;Daniel Branton;A. Chishti
DOI:
10.1016/s0021-9258(18)92973-x
发表时间:
1991-05
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
J. Conboy;J. Chan;J. Chasis;Y. Kan;N. Mohandas
通讯作者:
J. Conboy;J. Chan;J. Chasis;Y. Kan;N. Mohandas
DOI:
--
发表时间:
1993
期刊:
Seminars in hematology (Print)
影响因子:
--
作者:
J. Conboy
通讯作者:
J. Conboy
影响因子:
10.5
作者:
Hough, CD;Woods, DF;Bryant, PJ
通讯作者:
Bryant, PJ
DOI:
--
发表时间:
1982
期刊:
Progress in clinical and biological research
影响因子:
--
作者:
Shohet,SB;Mohandas,N;Tchernia,G
通讯作者:
Tchernia,G