3isw

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{{STRUCTURE_3isw| PDB=3isw | SCENE= }}
 
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===Crystal structure of filamin-A immunoglobulin-like repeat 21 bound to an N-terminal peptide of CFTR===
 
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{{ABSTRACT_PUBMED_20351101}}
 
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==Disease==
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==Crystal structure of filamin-A immunoglobulin-like repeat 21 bound to an N-terminal peptide of CFTR==
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[[http://www.uniprot.org/uniprot/FLNA_HUMAN FLNA_HUMAN]] Defects in FLNA are the cause of periventricular nodular heterotopia type 1 (PVNH1) [MIM:[http://omim.org/entry/300049 300049]]; also called nodular heterotopia, bilateral periventricular (NHBP or BPNH). PVNH is a developmental disorder characterized by the presence of periventricular nodules of cerebral gray matter, resulting from a failure of neurons to migrate normally from the lateral ventricular proliferative zone, where they are formed, to the cerebral cortex. PVNH1 is an X-linked dominant form. Heterozygous females have normal intelligence but suffer from seizures and various manifestations outside the central nervous system, especially related to the vascular system. Hemizygous affected males die in the prenatal or perinatal period.<ref>PMID:16299064</ref><ref>PMID:11532987</ref><ref>PMID:12410386</ref><ref>PMID:11914408</ref><ref>PMID:15249610</ref> Defects in FLNA are the cause of periventricular nodular heterotopia type 4 (PVNH4) [MIM:[http://omim.org/entry/300537 300537]]; also known as periventricular heterotopia Ehlers-Danlos variant. PVNH4 is characterized by nodular brain heterotopia, joint hypermobility and development of aortic dilation in early adulthood. Defects in FLNA are the cause of otopalatodigital syndrome type 1 (OPD1) [MIM:[http://omim.org/entry/311300 311300]]. OPD1 is an X-linked dominant multiple congenital anomalies disease mainly characterized by a generalized skeletal dysplasia, mild mental retardation, hearing loss, cleft palate, and typical facial anomalies. OPD1 belongs to a group of X-linked skeletal dysplasias known as oto-palato-digital syndrome spectrum disorders that also include OPD2, Melnick-Needles syndrome (MNS), and frontometaphyseal dysplasia (FMD). Remodeling of the cytoskeleton is central to the modulation of cell shape and migration. FLNA is a widely expressed protein that regulates re-organization of the actin cytoskeleton by interacting with integrins, transmembrane receptor complexes and second messengers. Males with OPD1 have cleft palate, malformations of the ossicles causing deafness and milder bone and limb defects than those associated with OPD2. Obligate female carriers of mutations causing both OPD1 and OPD2 have variable (often milder) expression of a similar phenotypic spectrum.<ref>PMID:12612583</ref><ref>PMID:15940695</ref> Defects in FLNA are the cause of otopalatodigital syndrome type 2 (OPD2) [MIM:[http://omim.org/entry/304120 304120]]; also known as cranioorodigital syndrome. OPD2 is a congenital bone disorder that is characterized by abnormally modeled, bowed bones, small or absent first digits and, more variably, cleft palate, posterior fossa brain anomalies, omphalocele and cardiac defects. Defects in FLNA are the cause of frontometaphyseal dysplasia (FMD) [MIM:[http://omim.org/entry/305620 305620]]. FMD is a congenital bone disease characterized by supraorbital hyperostosis, deafness and digital anomalies.<ref>PMID:12612583</ref><ref>PMID:16596676</ref> Defects in FLNA are the cause of Melnick-Needles syndrome (MNS) [MIM:[http://omim.org/entry/309350 309350]]. MNS is a severe congenital bone disorder characterized by typical facies (exophthalmos, full cheeks, micrognathia and malalignment of teeth), flaring of the metaphyses of long bones, s-like curvature of bones of legs, irregular constrictions in the ribs, and sclerosis of base of skull.<ref>PMID:12612583</ref> Defects in FLNA are the cause of X-linked congenital idiopathic intestinal pseudoobstruction (CIIPX) [MIM:[http://omim.org/entry/300048 300048]]. CIIPX is characterized by a severe abnormality of gastrointestinal motility due to primary qualitative defects of enteric ganglia and nerve fibers. Affected individuals manifest recurrent signs of intestinal obstruction in the absence of any mechanical lesion.<ref>PMID:17357080</ref> Defects in FLNA are the cause of FG syndrome type 2 (FGS2) [MIM:[http://omim.org/entry/300321 300321]]. FG syndrome (FGS) is an X-linked disorder characterized by mental retardation, relative macrocephaly, hypotonia and constipation.<ref>PMID:17632775</ref> Defects in FLNA are the cause of terminal osseous dysplasia (TOD) [MIM:[http://omim.org/entry/300244 300244]]. A rare X-linked dominant male-lethal disease characterized by skeletal dysplasia of the limbs, pigmentary defects of the skin and recurrent digital fibroma during infancy. A significant phenotypic variability is observed in affected females.<ref>PMID:20598277</ref> Defects in FLNA are the cause of cardiac valvular dysplasia X-linked (CVDX) [MIM:[http://omim.org/entry/314400 314400]]. A rare X-linked heart disease characterized by mitral and/or aortic valve regurgitation. The histologic features include fragmentation of collagenous bundles within the valve fibrosa and accumulation of proteoglycans, which produces excessive valve tissue leading to billowing of the valve leaflets.<ref>PMID:17190868</ref> Note=Defects in FLNA may be a cause of macrothrombocytopenia, a disorder characterized by subnormal levels of blood platelets. Blood platelets are abonormally enlarged. [[http://www.uniprot.org/uniprot/CFTR_HUMAN CFTR_HUMAN]] Defects in CFTR are the cause of cystic fibrosis (CF) [MIM:[http://omim.org/entry/219700 219700]]; also known as mucoviscidosis. CF is the most common genetic disease in the Caucasian population, with a prevalence of about 1 in 2'000 live births. Inheritance is autosomal recessive. CF is a common generalized disorder of exocrine gland function which impairs clearance of secretions in a variety of organs. It is characterized by the triad of chronic bronchopulmonary disease (with recurrent respiratory infections), pancreatic insufficiency (which leads to malabsorption and growth retardation) and elevated sweat electrolytes.<ref>PMID:1695717</ref><ref>PMID:2236053</ref><ref>PMID:1710600</ref><ref>PMID:1284466</ref><ref>PMID:1284468</ref><ref>PMID:1284530</ref><ref>PMID:1284529</ref><ref>PMID:7680525</ref><ref>PMID:7683628</ref><ref>PMID:7683954</ref><ref>PMID:7505694</ref><ref>PMID:7504969</ref><ref>PMID:7522211</ref><ref>PMID:7513296</ref><ref>PMID:7525450</ref><ref>PMID:7520022</ref><ref>PMID:7524913</ref><ref>PMID:7524909</ref><ref>PMID:7517264</ref><ref>PMID:8081395</ref><ref>PMID:7544319</ref><ref>PMID:8522333</ref><ref>PMID:7537150</ref><ref>PMID:7541273</ref><ref>PMID:7581407</ref><ref>PMID:7543567</ref><ref>PMID:7541510</ref><ref>PMID:8800923</ref><ref>PMID:8829633</ref><ref>PMID:8723693</ref><ref>PMID:8723695</ref><ref>PMID:8956039</ref><ref>PMID:9101301</ref><ref>PMID:9222768</ref><ref>PMID:9375855</ref><ref>PMID:9401006</ref><ref>PMID:9443874</ref><ref>PMID:9521595</ref><ref>PMID:9921909</ref><ref>PMID:9736778</ref><ref>PMID:9482579</ref><ref>PMID:9554753</ref><ref>PMID:9452048</ref><ref>PMID:9452054</ref><ref>PMID:9452073</ref><ref>PMID:10094564</ref> Defects in CFTR are the cause of congenital bilateral absence of the vas deferens (CBAVD) [MIM:[http://omim.org/entry/277180 277180]]. CBAVD is an important cause of sterility in men and could represent an incomplete form of cystic fibrosis, as the majority of men suffering from cystic fibrosis lack the vas deferens.<ref>PMID:7529962</ref><ref>PMID:7539342</ref><ref>PMID:9067761</ref><ref>PMID:10651488</ref>[:]
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<StructureSection load='3isw' size='340' side='right'caption='[[3isw]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[3isw]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ISW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3ISW FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.8&#8491;</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3isw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3isw OCA], [https://pdbe.org/3isw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3isw RCSB], [https://www.ebi.ac.uk/pdbsum/3isw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3isw ProSAT]</span></td></tr>
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</table>
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== Disease ==
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[https://www.uniprot.org/uniprot/FLNA_HUMAN FLNA_HUMAN] Defects in FLNA are the cause of periventricular nodular heterotopia type 1 (PVNH1) [MIM:[https://omim.org/entry/300049 300049]; also called nodular heterotopia, bilateral periventricular (NHBP or BPNH). PVNH is a developmental disorder characterized by the presence of periventricular nodules of cerebral gray matter, resulting from a failure of neurons to migrate normally from the lateral ventricular proliferative zone, where they are formed, to the cerebral cortex. PVNH1 is an X-linked dominant form. Heterozygous females have normal intelligence but suffer from seizures and various manifestations outside the central nervous system, especially related to the vascular system. Hemizygous affected males die in the prenatal or perinatal period.<ref>PMID:16299064</ref> <ref>PMID:11532987</ref> <ref>PMID:12410386</ref> <ref>PMID:11914408</ref> <ref>PMID:15249610</ref> Defects in FLNA are the cause of periventricular nodular heterotopia type 4 (PVNH4) [MIM:[https://omim.org/entry/300537 300537]; also known as periventricular heterotopia Ehlers-Danlos variant. PVNH4 is characterized by nodular brain heterotopia, joint hypermobility and development of aortic dilation in early adulthood. Defects in FLNA are the cause of otopalatodigital syndrome type 1 (OPD1) [MIM:[https://omim.org/entry/311300 311300]. OPD1 is an X-linked dominant multiple congenital anomalies disease mainly characterized by a generalized skeletal dysplasia, mild mental retardation, hearing loss, cleft palate, and typical facial anomalies. OPD1 belongs to a group of X-linked skeletal dysplasias known as oto-palato-digital syndrome spectrum disorders that also include OPD2, Melnick-Needles syndrome (MNS), and frontometaphyseal dysplasia (FMD). Remodeling of the cytoskeleton is central to the modulation of cell shape and migration. FLNA is a widely expressed protein that regulates re-organization of the actin cytoskeleton by interacting with integrins, transmembrane receptor complexes and second messengers. Males with OPD1 have cleft palate, malformations of the ossicles causing deafness and milder bone and limb defects than those associated with OPD2. Obligate female carriers of mutations causing both OPD1 and OPD2 have variable (often milder) expression of a similar phenotypic spectrum.<ref>PMID:12612583</ref> <ref>PMID:15940695</ref> Defects in FLNA are the cause of otopalatodigital syndrome type 2 (OPD2) [MIM:[https://omim.org/entry/304120 304120]; also known as cranioorodigital syndrome. OPD2 is a congenital bone disorder that is characterized by abnormally modeled, bowed bones, small or absent first digits and, more variably, cleft palate, posterior fossa brain anomalies, omphalocele and cardiac defects. Defects in FLNA are the cause of frontometaphyseal dysplasia (FMD) [MIM:[https://omim.org/entry/305620 305620]. FMD is a congenital bone disease characterized by supraorbital hyperostosis, deafness and digital anomalies.<ref>PMID:12612583</ref> <ref>PMID:16596676</ref> Defects in FLNA are the cause of Melnick-Needles syndrome (MNS) [MIM:[https://omim.org/entry/309350 309350]. MNS is a severe congenital bone disorder characterized by typical facies (exophthalmos, full cheeks, micrognathia and malalignment of teeth), flaring of the metaphyses of long bones, s-like curvature of bones of legs, irregular constrictions in the ribs, and sclerosis of base of skull.<ref>PMID:12612583</ref> Defects in FLNA are the cause of X-linked congenital idiopathic intestinal pseudoobstruction (CIIPX) [MIM:[https://omim.org/entry/300048 300048]. CIIPX is characterized by a severe abnormality of gastrointestinal motility due to primary qualitative defects of enteric ganglia and nerve fibers. Affected individuals manifest recurrent signs of intestinal obstruction in the absence of any mechanical lesion.<ref>PMID:17357080</ref> Defects in FLNA are the cause of FG syndrome type 2 (FGS2) [MIM:[https://omim.org/entry/300321 300321]. FG syndrome (FGS) is an X-linked disorder characterized by mental retardation, relative macrocephaly, hypotonia and constipation.<ref>PMID:17632775</ref> Defects in FLNA are the cause of terminal osseous dysplasia (TOD) [MIM:[https://omim.org/entry/300244 300244]. A rare X-linked dominant male-lethal disease characterized by skeletal dysplasia of the limbs, pigmentary defects of the skin and recurrent digital fibroma during infancy. A significant phenotypic variability is observed in affected females.<ref>PMID:20598277</ref> Defects in FLNA are the cause of cardiac valvular dysplasia X-linked (CVDX) [MIM:[https://omim.org/entry/314400 314400]. A rare X-linked heart disease characterized by mitral and/or aortic valve regurgitation. The histologic features include fragmentation of collagenous bundles within the valve fibrosa and accumulation of proteoglycans, which produces excessive valve tissue leading to billowing of the valve leaflets.<ref>PMID:17190868</ref> Note=Defects in FLNA may be a cause of macrothrombocytopenia, a disorder characterized by subnormal levels of blood platelets. Blood platelets are abonormally enlarged.
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== Function ==
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[https://www.uniprot.org/uniprot/FLNA_HUMAN FLNA_HUMAN] Promotes orthogonal branching of actin filaments and links actin filaments to membrane glycoproteins. Anchors various transmembrane proteins to the actin cytoskeleton and serves as a scaffold for a wide range of cytoplasmic signaling proteins. Interaction with FLNA may allow neuroblast migration from the ventricular zone into the cortical plate. Tethers cell surface-localized furin, modulates its rate of internalization and directs its intracellular trafficking (By similarity). Involved in ciliogenesis.<ref>PMID:22121117</ref>
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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/is/3isw_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/main_output.php?pdb_ID=3isw 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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Mutations in the chloride channel cystic fibrosis transmembrane regulator (CFTR) cause cystic fibrosis, a genetic disorder characterized by defects in CFTR biosynthesis, localization to the cell surface, or activation by regulatory factors. It was discovered recently that surface localization of CFTR is stabilized by an interaction between the CFTR N terminus and the multidomain cytoskeletal protein filamin. The details of the CFTR-filamin interaction, however, are unclear. Using x-ray crystallography, we show how the CFTR N terminus binds to immunoglobulin-like repeat 21 of filamin A (FlnA-Ig21). CFTR binds to beta-strands C and D of FlnA-Ig21 using backbone-backbone hydrogen bonds, a linchpin serine residue, and hydrophobic side-chain packing. We use NMR to determine that the CFTR N terminus also binds to several other immunoglobulin-like repeats from filamin A in vitro. Our structural data explain why the cystic fibrosis-causing S13F mutation disrupts CFTR-filamin interaction. We show that FlnA-Ig repeats transfected into cultured Calu-3 cells disrupt CFTR-filamin interaction and reduce surface levels of CFTR. Our findings suggest that filamin A stabilizes surface CFTR by anchoring it to the actin cytoskeleton through interactions with multiple filamin Ig repeats. Such an interaction mode may allow filamins to cluster multiple CFTR molecules and to promote colocalization of CFTR and other filamin-binding proteins in the apical plasma membrane of epithelial cells.
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==Function==
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Biochemical basis of the interaction between cystic fibrosis transmembrane conductance regulator and immunoglobulin-like repeats of filamin.,Smith L, Page RC, Xu Z, Kohli E, Litman P, Nix JC, Ithychanda SS, Liu J, Qin J, Misra S, Liedtke CM J Biol Chem. 2010 May 28;285(22):17166-76. Epub 2010 Mar 29. PMID:20351101<ref>PMID:20351101</ref>
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[[http://www.uniprot.org/uniprot/FLNA_HUMAN FLNA_HUMAN]] Promotes orthogonal branching of actin filaments and links actin filaments to membrane glycoproteins. Anchors various transmembrane proteins to the actin cytoskeleton and serves as a scaffold for a wide range of cytoplasmic signaling proteins. Interaction with FLNA may allow neuroblast migration from the ventricular zone into the cortical plate. Tethers cell surface-localized furin, modulates its rate of internalization and directs its intracellular trafficking (By similarity). Involved in ciliogenesis.<ref>PMID:22121117</ref> [[http://www.uniprot.org/uniprot/CFTR_HUMAN CFTR_HUMAN]] Involved in the transport of chloride ions. May regulate bicarbonate secretion and salvage in epithelial cells by regulating the SLC4A7 transporter. Can inhibit the chloride channel activity of ANO1.<ref>PMID:22178883</ref>
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==About this Structure==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[3isw]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ISW OCA].
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</div>
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<div class="pdbe-citations 3isw" style="background-color:#fffaf0;"></div>
==See Also==
==See Also==
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*[[Filamin|Filamin]]
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*[[Filamin 3D structures|Filamin 3D structures]]
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*[[User:Georg Mlynek/workbench|User:Georg Mlynek/workbench]]
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==Reference==
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== References ==
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<ref group="xtra">PMID:020351101</ref><references group="xtra"/><references/>
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<references/>
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__TOC__
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Ithychanda, S S.]]
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[[Category: Large Structures]]
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[[Category: Liu, J M.]]
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[[Category: Ithychanda SS]]
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[[Category: Misra, S.]]
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[[Category: Liu JM]]
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[[Category: Page, R.]]
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[[Category: Misra S]]
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[[Category: Qin, J.]]
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[[Category: Page R]]
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[[Category: Xu, Z.]]
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[[Category: Qin J]]
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[[Category: Actin-binding]]
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[[Category: Xu Z]]
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[[Category: Atp-binding]]
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[[Category: Chloride]]
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[[Category: Chloride channel]]
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[[Category: Cytoskeleton]]
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[[Category: Disease mutation]]
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[[Category: Glycoprotein]]
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[[Category: Hydrolase]]
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[[Category: Ion transport]]
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[[Category: Ionic channel]]
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[[Category: Membrane]]
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[[Category: Nucleotide-binding]]
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[[Category: Phosphoprotein]]
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[[Category: Protein-peptide complex]]
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[[Category: Structural protein]]
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[[Category: Transmembrane]]
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[[Category: Transport]]
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Current revision

Crystal structure of filamin-A immunoglobulin-like repeat 21 bound to an N-terminal peptide of CFTR

PDB ID 3isw

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