2aav
From Proteopedia
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|ACTIVITY= | |ACTIVITY= | ||
|GENE= | |GENE= | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY=[[2bp3|2BP3]] | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2aav FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2aav OCA], [http://www.ebi.ac.uk/pdbsum/2aav PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2aav RCSB]</span> | ||
}} | }} | ||
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==Overview== | ==Overview== | ||
Filamin A (FLNa), a dimeric actin cross-linking and scaffold protein with numerous intracellular binding partners, anchors the platelet adhesion glycoprotein (GP) Ib-IX-V receptor to actin cytoskeleton. We mapped the GPIbalpha binding site to a single domain of FLNa and resolved the structure of this domain and its interaction complex with the corresponding GPIbalpha cytoplasmic domain. This is the first atomic structure of this class of membrane glycoprotein-cytoskeleton connection. GPIbalpha binds in a groove formed between the C and D beta strands of FLNa domain 17. The interaction is strikingly similar to that between the beta7 integrin tail and a different FLNa domain, potentially defining a conserved motif for FLNa binding. Nevertheless, the structures also reveal specificity of the interfaces, which explains different regulatory mechanisms. To verify the topology of GPIb-FLNa interaction we also purified the native complex from platelets and showed that GPIb interacts with the C-terminus of FLNa, which is in accordance with our biochemical and structural data. | Filamin A (FLNa), a dimeric actin cross-linking and scaffold protein with numerous intracellular binding partners, anchors the platelet adhesion glycoprotein (GP) Ib-IX-V receptor to actin cytoskeleton. We mapped the GPIbalpha binding site to a single domain of FLNa and resolved the structure of this domain and its interaction complex with the corresponding GPIbalpha cytoplasmic domain. This is the first atomic structure of this class of membrane glycoprotein-cytoskeleton connection. GPIbalpha binds in a groove formed between the C and D beta strands of FLNa domain 17. The interaction is strikingly similar to that between the beta7 integrin tail and a different FLNa domain, potentially defining a conserved motif for FLNa binding. Nevertheless, the structures also reveal specificity of the interfaces, which explains different regulatory mechanisms. To verify the topology of GPIb-FLNa interaction we also purified the native complex from platelets and showed that GPIb interacts with the C-terminus of FLNa, which is in accordance with our biochemical and structural data. | ||
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| - | ==Disease== | ||
| - | Known diseases associated with this structure: Frontometaphyseal dysplasia OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=300017 300017]], Heterotopia, periventricular OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=300017 300017]], Heterotopia, periventricular nodular, with frontometaphyseal dysplasia OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=300017 300017]], Heterotopia, periventricular, ED variant OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=300017 300017]], Melnick-Needles syndrome OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=300017 300017]], Otopalatodigital syndrome, type I OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=300017 300017]], Otopalatodigital syndrome, type II OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=300017 300017]] | ||
==About this Structure== | ==About this Structure== | ||
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[[Category: filamin a domain 17]] | [[Category: filamin a domain 17]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 01:50:19 2008'' |
Revision as of 22:50, 30 March 2008
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| Related: | 2BP3
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Solution NMR structure of Filamin A domain 17
Overview
Filamin A (FLNa), a dimeric actin cross-linking and scaffold protein with numerous intracellular binding partners, anchors the platelet adhesion glycoprotein (GP) Ib-IX-V receptor to actin cytoskeleton. We mapped the GPIbalpha binding site to a single domain of FLNa and resolved the structure of this domain and its interaction complex with the corresponding GPIbalpha cytoplasmic domain. This is the first atomic structure of this class of membrane glycoprotein-cytoskeleton connection. GPIbalpha binds in a groove formed between the C and D beta strands of FLNa domain 17. The interaction is strikingly similar to that between the beta7 integrin tail and a different FLNa domain, potentially defining a conserved motif for FLNa binding. Nevertheless, the structures also reveal specificity of the interfaces, which explains different regulatory mechanisms. To verify the topology of GPIb-FLNa interaction we also purified the native complex from platelets and showed that GPIb interacts with the C-terminus of FLNa, which is in accordance with our biochemical and structural data.
About this Structure
2AAV is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
The structure of the GPIb-filamin A complex., Nakamura F, Pudas R, Heikkinen O, Permi P, Kilpelainen I, Munday AD, Hartwig JH, Stossel TP, Ylanne J, Blood. 2006 Mar 1;107(5):1925-32. Epub 2005 Nov 17. PMID:16293600
Page seeded by OCA on Mon Mar 31 01:50:19 2008
