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3dow

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Complex structure of GABA type A receptor associated protein and its binding epitope on calreticulin

Structural highlights

3dow is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.3Å
Ligands:	,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

GBRAP_HUMAN May play a role in intracellular transport of GABA(A) receptors and its interaction with the cytoskeleton. Involved in apoptosis. Involved in autophagy (By similarity).^[1]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The 4-aminobutyrate type A receptor-associated protein (GABARAP) is a versatile adaptor protein that plays an important role in intracellular vesicle trafficking, particularly in neuronal cells. We have investigated the structural determinants underlying the interaction of GABARAP with calreticulin using spectroscopic and crystallographic techniques. Specifically, we present the crystal structure of GABARAP in complex with its major binding epitope on the chaperone. Molecular modeling of a complex containing full-length calreticulin suggests a novel mode of substrate interaction, which may have functional implications for the calreticulin/calnexin family in general.

Structural framework of the GABARAP-calreticulin interface--implications for substrate binding to endoplasmic reticulum chaperones.,Thielmann Y, Weiergraber OH, Mohrluder J, Willbold D FEBS J. 2009 Feb;276(4):1140-52. Epub 2009 Jan 16. PMID:19154346^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Lee JH, Rho SB, Chun T. GABAA receptor-associated protein (GABARAP) induces apoptosis by interacting with DEAD (Asp-Glu-Ala-Asp/His) box polypeptide 47 (DDX 47). Biotechnol Lett. 2005 May;27(9):623-8. PMID:15977068 doi:http://dx.doi.org/10.1007/s10529-005-3628-2
↑ Thielmann Y, Weiergraber OH, Mohrluder J, Willbold D. Structural framework of the GABARAP-calreticulin interface--implications for substrate binding to endoplasmic reticulum chaperones. FEBS J. 2009 Feb;276(4):1140-52. Epub 2009 Jan 16. PMID:19154346 doi:10.1111/j.1742-4658.2008.06857.x