1s6c
From Proteopedia
| Line 4: | Line 4: | ||
|PDB= 1s6c |SIZE=350|CAPTION= <scene name='initialview01'>1s6c</scene>, resolution 2.0Å | |PDB= 1s6c |SIZE=350|CAPTION= <scene name='initialview01'>1s6c</scene>, resolution 2.0Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand=CA:CALCIUM ION'>CA</scene> | + | |LIGAND= <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CAS:S-(DIMETHYLARSENIC)CYSTEINE'>CAS</scene> |
|ACTIVITY= | |ACTIVITY= | ||
|GENE= KChIP1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10116 Rattus norvegicus]), KCND2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10116 Rattus norvegicus]) | |GENE= KChIP1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10116 Rattus norvegicus]), KCND2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10116 Rattus norvegicus]) | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY=[[1nn7|1NN7]] | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1s6c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1s6c OCA], [http://www.ebi.ac.uk/pdbsum/1s6c PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1s6c RCSB]</span> | ||
}} | }} | ||
| Line 27: | Line 30: | ||
[[Category: Qian, Y.]] | [[Category: Qian, Y.]] | ||
[[Category: Zhou, W.]] | [[Category: Zhou, W.]] | ||
| - | [[Category: CA]] | ||
[[Category: ef-hand]] | [[Category: ef-hand]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 23:38:01 2008'' |
Revision as of 20:38, 30 March 2008
| |||||||
| , resolution 2.0Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , | ||||||
| Gene: | KChIP1 (Rattus norvegicus), KCND2 (Rattus norvegicus) | ||||||
| Related: | 1NN7
| ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal structure of the complex between KChIP1 and Kv4.2 N1-30
Overview
Four Kv channel-interacting proteins (KChIP1 through KChIP4) interact directly with the N-terminal domain of three Shal-type voltage-gated potassium channels (Kv4.1, Kv4.2, and Kv4.3) to modulate cell surface expression and function of Kv4 channels. Here we report a 2.0 Angstrom crystal structure of the core domain of KChIP1 (KChIP1*) in complex with the N-terminal fragment of Kv4.2 (Kv4.2N30). The complex reveals a clam-shaped dimeric assembly. Four EF-hands from each KChIP1 form each shell of the clam. The N-terminal end of Kv4.2 forming an alpha helix (alpha1) and the C-terminal alpha helix (H10) of KChIP1 are enclosed nearly coaxially by these shells. As a result, the H10 of KChIP1 and alpha1 of Kv4.2 mediate interactions between these two molecules, structurally reminiscent of the interactions between calmodulin and its target peptides. Site-specific mutagenesis combined with functional characterization shows that those interactions mediated by alpha1 and H10 are essential to the modulation of Kv4.2 by KChIPs.
About this Structure
1S6C is a Protein complex structure of sequences from Rattus norvegicus. Full crystallographic information is available from OCA.
Reference
Structural insights into the functional interaction of KChIP1 with Shal-type K(+) channels., Zhou W, Qian Y, Kunjilwar K, Pfaffinger PJ, Choe S, Neuron. 2004 Feb 19;41(4):573-86. PMID:14980206
Page seeded by OCA on Sun Mar 30 23:38:01 2008
