A highly conserved protein family interacting with the fragile X mental retardation protein (FMRP) and displaying selective interactions with FMRP-related proteins FXR1P and FXR2P.

Details

Serval ID
serval:BIB_4536422FFC51
Type
Article: article from journal or magazin.
Collection
Publications
Title
A highly conserved protein family interacting with the fragile X mental retardation protein (FMRP) and displaying selective interactions with FMRP-related proteins FXR1P and FXR2P.
Journal
Proceedings of the National Academy of Sciences of the United States of America
Author(s)
Schenck A., Bardoni B., Moro A., Bagni C., Mandel J.L.
ISSN
0027-8424 (Print)
ISSN-L
0027-8424
Publication state
Published
Issued date
17/07/2001
Volume
98
Number
15
Pages
8844-8849
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
The absence of the fragile X mental retardation protein (FMRP), encoded by the FMR1 gene, is responsible for pathologic manifestations in the Fragile X Syndrome, the most frequent cause of inherited mental retardation. FMRP is an RNA-binding protein associated with polysomes as part of a messenger ribonucleoprotein (mRNP) complex. Although its function is poorly understood, various observations suggest a role in local protein translation at neuronal dendrites and in dendritic spine maturation. We present here the identification of CYFIP1/2 (Cytoplasmic FMRP Interacting Proteins) as FMRP interactors. CYFIP1/2 share 88% amino acid sequence identity and represent the two members in humans of a highly conserved protein family. Remarkably, whereas CYFIP2 also interacts with the FMRP-related proteins FXR1P/2P, CYFIP1 interacts exclusively with FMRP. FMRP--CYFIP interaction involves the domain of FMRP also mediating homo- and heteromerization, thus suggesting a competition between interaction among the FXR proteins and interaction with CYFIP. CYFIP1/2 are proteins of unknown function, but CYFIP1 has recently been shown to interact with the small GTPase Rac1, which is implicated in development and maintenance of neuronal structures. Consistent with FMRP and Rac1 localization in dendritic fine structures, CYFIP1/2 are present in synaptosomal extracts.

Keywords
Amino Acid Sequence, Animals, Base Sequence, COS Cells, Cell Extracts, Cell Fractionation, Cell Line, Cercopithecus aethiops, Conserved Sequence, DNA, Complementary, Exons, Fragile X Mental Retardation Protein, Gene Expression, HeLa Cells, Humans, Molecular Sequence Data, Nerve Tissue Proteins/genetics, Nerve Tissue Proteins/metabolism, Proteins/genetics, Proteins/metabolism, RNA/metabolism, RNA-Binding Proteins/metabolism, Rabbits, Recombinant Fusion Proteins/genetics, Recombinant Fusion Proteins/metabolism, Spodoptera
Pubmed
Open Access
Yes
Create date
06/03/2017 17:23
Last modification date
20/08/2019 13:49
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