Two independent domains of hDlg are sufficient for subcellular targeting: the PDZ1-2 conformational unit and an alternatively spliced domain.
Two independent domains of hDlg are sufficient for subcellular targeting: the PDZ1-2 conformational unit and an alternatively spliced domain.
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HDLG的两个独立域足以用于亚细胞靶向:PDZ1-2构象单元和一个剪接的域。
DOI:
10.1083/jcb.135.4.1125
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发表时间:
1996-11
影响因子:
7.8
通讯作者:
Branton, D
中科院分区:
文献类型:
--
作者:
Lue, RA;Brandin, E;Chan, EP;Branton, D
hDlg, a human homologue of the Drosophila Dig tumor suppressor, contains two binding sites for protein 4.1, one within a domain containing three PSD-95/Dlg/ZO-1 (PDZ) repeats and another within the alternatively spliced I3 domain. Here, we further define the PDZ- protein 4.1 interaction in vitro and show the functional role of both 4.1 binding sites in situ. A single protease-resistant structure formed by the entirety of both PDZ repeats 1 and 2 (PDZ1-2) contains the protein 4.1-binding site. Both this PDZ1-2 site and the I3 domain associate with a 30-kD NH2-terminal domain of protein 4.1 that is conserved in ezrin/radixin/moesin (ERM) proteins. We show that both protein 4.1 and the ezrin ERM protein interact with the murine form of hDlg in a coprecipitating immune complex. In permeabilized cells and tissues, either the PDZ1-2 domain or the I3 domain alone are sufficient for proper subcellular targeting of exogenous hDlg. In situ, PDZ1-2- mediated targeting involves interactions with both 4.1/ERM proteins and proteins containing the COOH-terminal T/SXV motif. I3-mediated targeting depends exclusively on interactions with 4.1/ERM proteins. Our data elucidates the multivalent nature of membrane-associated guanylate kinase homologue (MAGUK) targeting, thus beginning to define those protein interactions that are critical in MAGUK function.
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DOI:
10.1083/jcb.121.3.491
发表时间:
1993-05
期刊:
The Journal of cell biology
影响因子:
--
作者:
Itoh M;Nagafuchi A;Yonemura S;Kitani-Yasuda T;Tsukita S;Tsukita S
通讯作者:
Tsukita S
影响因子:
64.8
作者:
KIM, E;NIETHAMMER, M;SHENG, M
通讯作者:
SHENG, M
影响因子:
64.5
作者:
BARSAGI, D;ROTIN, D;SCHLESSINGER, J
通讯作者:
SCHLESSINGER, J
影响因子:
64.5
作者:
BECKERS, CJM;KELLER, DS;BALCH, WE
通讯作者:
BALCH, WE
影响因子:
16.2
作者:
CHO, KO;HUNT, CA;KENNEDY, MB
通讯作者:
KENNEDY, MB