3c4z: Difference between revisions

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[[Image:3c4z.jpg|left|200px]]
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{{STRUCTURE_3c4z|  PDB=3c4z  |  SCENE=  }}  
{{STRUCTURE_3c4z|  PDB=3c4z  |  SCENE=  }}  


'''Crystal structure of G protein coupled receptor kinase 1 bound to ADP and magnesium chloride at 1.84A'''
===Crystal structure of G protein coupled receptor kinase 1 bound to ADP and magnesium chloride at 1.84A===




==Overview==
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G protein-coupled receptor (GPCR) kinases (GRKs) phosphorylate activated heptahelical receptors, leading to their uncoupling from G proteins. Here we report six crystal structures of rhodopsin kinase (GRK1), revealing not only three distinct nucleotide-binding states of a GRK but also two key structural elements believed to be involved in the recognition of activated GPCRs. The first is the C-terminal extension of the kinase domain, which was observed in all nucleotide-bound GRK1 structures. The second is residues 5-30 of the N terminus, observed in one of the GRK1.(Mg(2+))(2).ATP structures. The N terminus was also clearly phosphorylated, leading to the identification of two novel phosphorylation sites by mass spectral analysis. Co-localization of the N terminus and the C-terminal extension near the hinge of the kinase domain suggests that activated GPCRs stimulate kinase activity by binding to this region to facilitate full closure of the kinase domain.
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{{ABSTRACT_PUBMED_18339619}}


==About this Structure==
==About this Structure==
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[[Category: Serine/threonine-protein kinase]]
[[Category: Serine/threonine-protein kinase]]
[[Category: Transferase]]
[[Category: Transferase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 16:46:09 2008''

Revision as of 16:46, 28 July 2008

File:3c4z.png

Template:STRUCTURE 3c4z

Crystal structure of G protein coupled receptor kinase 1 bound to ADP and magnesium chloride at 1.84ACrystal structure of G protein coupled receptor kinase 1 bound to ADP and magnesium chloride at 1.84A

Template:ABSTRACT PUBMED 18339619

About this StructureAbout this Structure

3C4Z is a Single protein structure of sequence from Bos taurus. Full crystallographic information is available from OCA.

ReferenceReference

Structures of Rhodopsin Kinase in Different Ligand States Reveal Key Elements Involved in G Protein-coupled Receptor Kinase Activation., Singh P, Wang B, Maeda T, Palczewski K, Tesmer JJ, J Biol Chem. 2008 May 16;283(20):14053-62. Epub 2008 Mar 13. PMID:18339619

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