2acx

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[[Image:2acx.gif|left|200px]]
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{{STRUCTURE_2acx| PDB=2acx | SCENE= }}
{{STRUCTURE_2acx| PDB=2acx | SCENE= }}
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'''Crystal Structure of G protein coupled receptor kinase 6 bound to AMPPNP'''
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===Crystal Structure of G protein coupled receptor kinase 6 bound to AMPPNP===
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==Overview==
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We describe the 2.6-A crystal structure of human G protein-coupled receptor kinase (GRK)-6, a key regulator of dopaminergic signaling and lymphocyte chemotaxis. GRK6 is a member of the GRK4 subfamily of GRKs, which is represented in most, if not all, metazoans. Comparison of GRK6 with GRK2 confirms that the catalytic core of all GRKs consists of intimately associated kinase and regulator of G protein signaling (RGS) homology domains. Despite being in complex with an ATP analog, the kinase domain of GRK6 remains in an open, presumably inactive conformation, suggesting that G protein-coupled receptors activate GRKs by inducing kinase domain closure. The structure reveals a putative phospholipid-binding site near the N terminus of GRK6 and structural elements within the kinase substrate channel that likely influence G protein-coupled receptor access and specificity. The crystalline GRK6 RGS homology domain forms an extensive dimer interface using conserved hydrophobic residues distinct from those in GRK2 that bind Galpha(q), although dimerization does not appear to occur in solution and is not required for receptor phosphorylation.
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The line below this paragraph, {{ABSTRACT_PUBMED_16613860}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 16613860 is the PubMed ID number.
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{{ABSTRACT_PUBMED_16613860}}
==About this Structure==
==About this Structure==
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[[Category: Grk6]]
[[Category: Grk6]]
[[Category: Kinase]]
[[Category: Kinase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 18:53:28 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 02:02:09 2008''

Revision as of 23:02, 27 July 2008

Image:2acx.png

Template:STRUCTURE 2acx

Crystal Structure of G protein coupled receptor kinase 6 bound to AMPPNP

Template:ABSTRACT PUBMED 16613860

About this Structure

2ACX is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

The structure of G protein-coupled receptor kinase (GRK)-6 defines a second lineage of GRKs., Lodowski DT, Tesmer VM, Benovic JL, Tesmer JJ, J Biol Chem. 2006 Jun 16;281(24):16785-93. Epub 2006 Apr 13. PMID:16613860

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