2esw

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Atomic structure of the N-terminal SH3 domain of mouse beta PIX,p21-activated kinase (PAK)-interacting exchange factorAtomic structure of the N-terminal SH3 domain of mouse beta PIX,p21-activated kinase (PAK)-interacting exchange factor

Structural highlights

2esw is a 2 chain structure with sequence from Lk3 transgenic mice. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[ARHG7_MOUSE] Acts as a RAC1 guanine nucleotide exchange factor (GEF) and can induce membrane ruffling. May function as a positive regulator of apoptosis. Functions in cell migration, attachment and cell spreading. Promotes targeting of RAC1 to focal adhesions. Downstream of NMDA receptors and CaMKK-CaMK1 signaling cascade, promotes the formation of spines and synapses in hippocampal neurons (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 mouse betaPIX-SH3 domain, residues 8-63 of P21-activated kinase interacting exchange factor, has been characterized by X-ray diffraction. Crystals belonging to space group P3(2)21 diffracted to 2.0 A and the structure was phased by the single-wavelength anomalous diffraction method. The domain is a compact beta-barrel with an overall conformation similar to the general SH3 structure. The X-ray structure shows mouse betaPIX-SH3 domain binding the way in which the betaPIX characteristic amino acids do so for an unconventional ligand binding surface. This arrangement provides a rationale for the unusual ligand recognition motif exhibited by mouse betaPIX-SH3 domain. Comparison with another SH3/peptide complex shows that the recognition mode of the mouse betaPIX-SH3 domain should be very similar to the RXXK ligand binding mode. The unique large and planar hydrophobic pocket may contribute to the promiscuity of betaPIX-SH3 domain resulting in its multiple biological functions.

Crystal structure of the N-terminal SH3 domain of mouse betaPIX, p21-activated kinase-interacting exchange factor.,Li X, Liu X, Sun F, Gao J, Zhou H, Gao GF, Bartlam M, Rao Z Biochem Biophys Res Commun. 2006 Jan 6;339(1):407-14. Epub 2005 Nov 14. PMID:16307729[2]

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

See Also

References

  1. Chang F, Lemmon CA, Park D, Romer LH. FAK potentiates Rac1 activation and localization to matrix adhesion sites: a role for betaPIX. Mol Biol Cell. 2007 Jan;18(1):253-64. Epub 2006 Nov 8. PMID:17093062 doi:http://dx.doi.org/10.1091/mbc.E06-03-0207
  2. Li X, Liu X, Sun F, Gao J, Zhou H, Gao GF, Bartlam M, Rao Z. Crystal structure of the N-terminal SH3 domain of mouse betaPIX, p21-activated kinase-interacting exchange factor. Biochem Biophys Res Commun. 2006 Jan 6;339(1):407-14. Epub 2005 Nov 14. PMID:16307729 doi:10.1016/j.bbrc.2005.10.212

2esw, resolution 2.01Å

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