2bkd

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{{STRUCTURE_2bkd| PDB=2bkd | SCENE= }}
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==STRUCTURE OF THE N-TERMINAL DOMAIN OF FRAGILE X MENTAL RETARDATION PROTEIN==
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===STRUCTURE OF THE N-TERMINAL DOMAIN OF FRAGILE X MENTAL RETARDATION PROTEIN===
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<StructureSection load='2bkd' size='340' side='right' caption='[[2bkd]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''>
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{{ABSTRACT_PUBMED_16407062}}
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2bkd]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BKD OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2BKD FirstGlance]. <br>
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==Disease==
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</td></tr><tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=HSO:HISTIDINOL'>HSO</scene></td></tr>
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[[http://www.uniprot.org/uniprot/FMR1_HUMAN FMR1_HUMAN]] Defects in FMR1 are the cause of fragile X syndrome (FRAX) [MIM:[http://omim.org/entry/300624 300624]]. Fragile X syndrome is a common genetic disease (has a prevalence of one in every 2000 children) which is characterized by moderate to severe mental retardation, macroorchidism (enlargement of the testicles), large ears, prominent jaw, and high-pitched, jocular speech. The defect in most fragile X syndrome patients results from an amplification of a CGG repeat region which is directly in front of the coding region.<ref>PMID:18664458</ref><ref>PMID:8401578</ref><ref>PMID:7688265</ref><ref>PMID:17850748</ref><ref>PMID:8490650</ref><ref>PMID:7633450</ref><ref>PMID:9659908</ref><ref>PMID:15805463</ref> Defects in FMR1 are the cause of fragile X tremor/ataxia syndrome (FXTAS) [MIM:[http://omim.org/entry/300623 300623]]. In FXTAS, the expanded repeats range in size from 55 to 200 repeats and are referred to as 'premutations'. Full repeat expansions with greater than 200 repeats results in fragile X mental retardation syndrome [MIM:[http://omim.org/entry/300624 300624]]. Carriers of the premutation typically do not show the full fragile X syndrome phenotype, but comprise a subgroup that may have some physical features of fragile X syndrome or mild cognitive and emotional problems.<ref>PMID:11445641</ref> Defects in FMR1 are the cause of premature ovarian failure syndrome type 1 (POF1) [MIM:[http://omim.org/entry/311360 311360]]. An ovarian disorder defined as the cessation of ovarian function under the age of 40 years. It is characterized by oligomenorrhea or amenorrhea, in the presence of elevated levels of serum gonadotropins and low estradiol.<ref>PMID:9719368</ref>
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<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2fmr|2fmr]]</td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2bkd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bkd OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2bkd RCSB], [http://www.ebi.ac.uk/pdbsum/2bkd PDBsum]</span></td></tr>
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==Function==
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<table>
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== Disease ==
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[[http://www.uniprot.org/uniprot/FMR1_HUMAN FMR1_HUMAN]] Defects in FMR1 are the cause of fragile X syndrome (FRAX) [MIM:[http://omim.org/entry/300624 300624]]. Fragile X syndrome is a common genetic disease (has a prevalence of one in every 2000 children) which is characterized by moderate to severe mental retardation, macroorchidism (enlargement of the testicles), large ears, prominent jaw, and high-pitched, jocular speech. The defect in most fragile X syndrome patients results from an amplification of a CGG repeat region which is directly in front of the coding region.<ref>PMID:18664458</ref> <ref>PMID:8401578</ref> <ref>PMID:7688265</ref> <ref>PMID:17850748</ref> <ref>PMID:8490650</ref> <ref>PMID:7633450</ref> <ref>PMID:9659908</ref> <ref>PMID:15805463</ref> Defects in FMR1 are the cause of fragile X tremor/ataxia syndrome (FXTAS) [MIM:[http://omim.org/entry/300623 300623]]. In FXTAS, the expanded repeats range in size from 55 to 200 repeats and are referred to as 'premutations'. Full repeat expansions with greater than 200 repeats results in fragile X mental retardation syndrome [MIM:[http://omim.org/entry/300624 300624]]. Carriers of the premutation typically do not show the full fragile X syndrome phenotype, but comprise a subgroup that may have some physical features of fragile X syndrome or mild cognitive and emotional problems.<ref>PMID:11445641</ref> Defects in FMR1 are the cause of premature ovarian failure syndrome type 1 (POF1) [MIM:[http://omim.org/entry/311360 311360]]. An ovarian disorder defined as the cessation of ovarian function under the age of 40 years. It is characterized by oligomenorrhea or amenorrhea, in the presence of elevated levels of serum gonadotropins and low estradiol.<ref>PMID:9719368</ref>
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== Function ==
[[http://www.uniprot.org/uniprot/FMR1_HUMAN FMR1_HUMAN]] Translation repressor. Component of the CYFIP1-EIF4E-FMR1 complex which binds to the mRNA cap and mediates translational repression. In the CYFIP1-EIF4E-FMR1 complex this subunit mediates translation repression (By similarity). RNA-binding protein that plays a role in intracellular RNA transport and in the regulation of translation of target mRNAs. Associated with polysomes. May play a role in the transport of mRNA from the nucleus to the cytoplasm. Binds strongly to poly(G), binds moderately to poly(U) but shows very little binding to poly(A) or poly(C).
[[http://www.uniprot.org/uniprot/FMR1_HUMAN FMR1_HUMAN]] Translation repressor. Component of the CYFIP1-EIF4E-FMR1 complex which binds to the mRNA cap and mediates translational repression. In the CYFIP1-EIF4E-FMR1 complex this subunit mediates translation repression (By similarity). RNA-binding protein that plays a role in intracellular RNA transport and in the regulation of translation of target mRNAs. Associated with polysomes. May play a role in the transport of mRNA from the nucleus to the cytoplasm. Binds strongly to poly(G), binds moderately to poly(U) but shows very little binding to poly(A) or poly(C).
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/bk/2bkd_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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FMRP, whose lack of expression causes the X-linked fragile X syndrome, is a modular RNA binding protein thought to be involved in posttranslational regulation. We have solved the structure in solution of the N-terminal domain of FMRP (NDF), a functionally important region involved in multiple interactions. The structure consists of a composite fold comprising two repeats of a Tudor motif followed by a short alpha helix. The interactions between the three structural elements are essential for the stability of the NDF fold. Although structurally similar, the two repeats have different dynamic and functional properties. The second, more flexible repeat is responsible for interacting both with methylated lysine and with 82-FIP, one of the FMRP nuclear partners. NDF contains a 3D nucleolar localization signal, since destabilization of its fold leads to altered nucleolar localization of FMRP. We suggest that the NDF composite fold determines an allosteric mechanism that regulates the FMRP functions.
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==About this Structure==
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The structure of the N-terminal domain of the fragile X mental retardation protein: a platform for protein-protein interaction.,Ramos A, Hollingworth D, Adinolfi S, Castets M, Kelly G, Frenkiel TA, Bardoni B, Pastore A Structure. 2006 Jan;14(1):21-31. PMID:16407062<ref>PMID:16407062</ref>
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[[2bkd]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BKD OCA].
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==Reference==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<ref group="xtra">PMID:016407062</ref><ref group="xtra">PMID:019601584</ref><references group="xtra"/><references/>
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</div>
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== References ==
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<references/>
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__TOC__
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Adinolfi, S.]]
[[Category: Adinolfi, S.]]

Revision as of 03:01, 30 September 2014

STRUCTURE OF THE N-TERMINAL DOMAIN OF FRAGILE X MENTAL RETARDATION PROTEIN

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