Role of Two Dileucine-like Motifs in Insulin Receptor Anchoring to Microvilli*
Role of Two Dileucine-like Motifs in Insulin Receptor Anchoring to Microvilli*
复制标题
两个双亮氨酸样基序在胰岛素受体锚定微绒毛中的作用*
DOI:
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发表时间:
2002
影响因子:
4.8
通讯作者:
J. Carpentier
中科院分区:
文献类型:
--
作者:
S. Shackleton;I. Hamer;Michelangelo Foti;Nicole Zumwald;C. Maeder;J. Carpentier
In the absence of ligand, the insulin receptor is maintained on microvilli on the cell surface. A dileucine motif (LL986–987) is necessary but not sufficient for this anchoring, which also required the presence of additional sequence(s) downstream of position 1000. The aim of the present study was to identify this (these) additional sequence(s). First, exons 16 or 17 were fused to the extracellular and transmembrane domains of complement receptor 1 and stably expressed in Chinese hamster ovary cells. Results obtained indicate that exon 17 is sufficient for anchoring to microvilli. Second, analysis of insulin receptor mutants truncated within exon 17 demonstrated that whereas receptors truncated at position 1000 showed no preferential association with microvilli, receptors truncated at position 1012 displayed a level of association identical to that of the full-length insulin receptor. Third, mutation of a diisoleucine motif (II1006–1007) present within this 12-amino acid stretch abrogated the preferential association of the receptor with microvilli. These results indicate that the domain required for association of insulin receptor with microvilli is contained within the region encoded by exon 17 and that, within this sequence, two dileucine-like motifs (LL986–987and II1006–1007) play a crucial role.
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影响因子:
4
作者:
Signoret,N;Rosenkilde,MM;Klasse,PJ;Schwartz,TW;Malim,MH;Hoxie,JA;Marsh,M
通讯作者:
Marsh,M
影响因子:
2.9
作者:
Yamada,K;Goncalves,E;Carpentier,JL;Kahn,CR;Shoelson,SE
通讯作者:
Shoelson,SE
DOI:
--
发表时间:
1990
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Backer,JM;Kahn,CR;Cahill,DA;Ullrich,A;White,MF
通讯作者:
White,MF
DOI:
--
发表时间:
1991
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Rajagopalan,M;Neidigh,JL;McClain,DA
通讯作者:
McClain,DA