1c15

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|RELATEDENTRY=[[3crd|3CRD]], [[1a1w|1A1W]], [[1ddf|1DDF]]
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1c15 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1c15 OCA], [http://www.ebi.ac.uk/pdbsum/1c15 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1c15 RCSB]</span>
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[[Category: programmed cell death]]
[[Category: programmed cell death]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 10:18:31 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 19:12:26 2008''

Revision as of 16:12, 30 March 2008


PDB ID 1c15

Drag the structure with the mouse to rotate
Related: 3CRD, 1A1W, 1DDF


Resources: FirstGlance, OCA, PDBsum, RCSB
Coordinates: save as pdb, mmCIF, xml



SOLUTION STRUCTURE OF APAF-1 CARD


Overview

Direct recruitment and activation of caspase-9 by Apaf-1 through the homophilic CARD/CARD (Caspase Recruitment Domain) interaction is critical for the activation of caspases downstream of mitochondrial damage in apoptosis. Here we report the solution structure of the Apaf-1 CARD domain and its surface of interaction with caspase-9 CARD. Apaf-1 CARD consists of six tightly packed amphipathic alpha-helices and is topologically similar to the RAIDD CARD, with the exception of a kink observed in the middle of the N-terminal helix. By using chemical shift perturbation data, the homophilic interaction was mapped to the acidic surface of Apaf-1 CARD centered around helices 2 and 3. Interestingly, a significant portion of the chemically perturbed residues are hydrophobic, indicating that in addition to the electrostatic interactions predicted previously, hydrophobic interaction is also an important driving force underlying the CARD/CARD interaction. On the basis of the identified functional residues of Apaf-1 CARD and the surface charge complementarity, we propose a model of CARD/CARD interaction between Apaf-1 and caspase-9.

About this Structure

1C15 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Solution structure of Apaf-1 CARD and its interaction with caspase-9 CARD: a structural basis for specific adaptor/caspase interaction., Zhou P, Chou J, Olea RS, Yuan J, Wagner G, Proc Natl Acad Sci U S A. 1999 Sep 28;96(20):11265-70. PMID:10500165

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