1gw5
From Proteopedia
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==Overview== | ==Overview== | ||
| - | AP2 is the best-characterized member of the family of heterotetrameric, clathrin adaptor complexes that play pivotal roles in many vesicle, trafficking pathways within the cell. AP2 functions in clathrin-mediated, endocytosis, the process whereby cargo enters the endosomal system from, the plasma membrane. We describe the structure of the 200 kDa AP2 "core", (alpha trunk, beta2 trunk, mu2, and sigma2) complexed with the, polyphosphatidylinositol headgroup mimic inositolhexakisphosphate at 2.6 A, resolution. Two potential polyphosphatidylinositide binding sites are, observed, one on alpha and one on mu2. The binding site for Yxxphi, endocytic motifs is buried, indicating that a conformational change, probably triggered by phosphorylation in the disordered mu2 linker, is, necessary to allow .. | + | AP2 is the best-characterized member of the family of heterotetrameric, clathrin adaptor complexes that play pivotal roles in many vesicle, trafficking pathways within the cell. AP2 functions in clathrin-mediated, endocytosis, the process whereby cargo enters the endosomal system from, the plasma membrane. We describe the structure of the 200 kDa AP2 "core", (alpha trunk, beta2 trunk, mu2, and sigma2) complexed with the, polyphosphatidylinositol headgroup mimic inositolhexakisphosphate at 2.6 A, resolution. Two potential polyphosphatidylinositide binding sites are, observed, one on alpha and one on mu2. The binding site for Yxxphi, endocytic motifs is buried, indicating that a conformational change, probably triggered by phosphorylation in the disordered mu2 linker, is, necessary to allow Yxxphi motif binding. A model for AP2 recruitment and, activation is proposed. |
==About this Structure== | ==About this Structure== | ||
| - | 1GW5 is a | + | 1GW5 is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens], [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus] and [http://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus] with IHP as [http://en.wikipedia.org/wiki/ligand ligand]. The following page contains interesting information on the relation of 1GW5 with [[http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/pdb88_1.html Clathrin]]. Structure known Active Site: IHP. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1GW5 OCA]. |
==Reference== | ==Reference== | ||
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[[Category: endocytosis]] | [[Category: endocytosis]] | ||
| - | ''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Mon Nov 5 12:36:30 2007'' |
Revision as of 10:31, 5 November 2007
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AP2 CLATHRIN ADAPTOR CORE
Overview
AP2 is the best-characterized member of the family of heterotetrameric, clathrin adaptor complexes that play pivotal roles in many vesicle, trafficking pathways within the cell. AP2 functions in clathrin-mediated, endocytosis, the process whereby cargo enters the endosomal system from, the plasma membrane. We describe the structure of the 200 kDa AP2 "core", (alpha trunk, beta2 trunk, mu2, and sigma2) complexed with the, polyphosphatidylinositol headgroup mimic inositolhexakisphosphate at 2.6 A, resolution. Two potential polyphosphatidylinositide binding sites are, observed, one on alpha and one on mu2. The binding site for Yxxphi, endocytic motifs is buried, indicating that a conformational change, probably triggered by phosphorylation in the disordered mu2 linker, is, necessary to allow Yxxphi motif binding. A model for AP2 recruitment and, activation is proposed.
About this Structure
1GW5 is a Protein complex structure of sequences from Homo sapiens, Mus musculus and Rattus norvegicus with IHP as ligand. The following page contains interesting information on the relation of 1GW5 with [Clathrin]. Structure known Active Site: IHP. Full crystallographic information is available from OCA.
Reference
Molecular architecture and functional model of the endocytic AP2 complex., Collins BM, McCoy AJ, Kent HM, Evans PR, Owen DJ, Cell. 2002 May 17;109(4):523-35. PMID:12086608
Page seeded by OCA on Mon Nov 5 12:36:30 2007
Categories: Clathrin | Homo sapiens | Mus musculus | Protein complex | Rattus norvegicus | Collins, B.M. | Evans, P.R. | Mccoy, A.J. | Owen, D.J. | IHP | Adaptor | Endocytosis
