ISDA

Deposition Date 2005-10-19

Release Date 2005-12-20

Last Version Date 2024-10-16

Entry Detail

PDB ID:

2BCJ

Keywords:

TRANSFERASE/HYDROLASE

Title:

Crystal Structure of G Protein-Coupled Receptor Kinase 2 in Complex with Galpha-q and Gbetagamma Subunits

Biological Source:

Source Organism:

Bos taurus (Taxon ID: 9913)
Rattus norvegicus (Taxon ID: 10116)
Mus musculus (Taxon ID: 10090)

Host Organism:

Trichoplusia ni

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

3.06 Å

R-Value Free:

0.29

R-Value Work:

0.24

R-Value Observed:

0.23

Space Group:

P 1 21 1

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:G-protein-coupled receptor kinase 2
Gene (Uniprot):GRK2
Mutations:S670A
Chain IDs:A
Chain Length:689
Number of Molecules:1
Biological Source:Bos taurus

UniProt ID:P21146 Pfam ID:PF00615, PF00069, PF00169 EC:2.7.11.15

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
Gene (Uniprot):GNB1
Chain IDs:B
Chain Length:340
Number of Molecules:1
Biological Source:Bos taurus

UniProt ID:P62871 Pfam ID:PF00400

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
Gene (Uniprot):GNG2
Mutations:C68S
Chain IDs:C (auth: G)
Chain Length:71
Number of Molecules:1
Biological Source:Bos taurus

UniProt ID:P63212 Pfam ID:PF00631

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Guanine nucleotide-binding protein G(i) subunit alpha-1, Guanine nucleotide-binding protein G(q) subunit alpha chimera
Gene (Uniprot):Gnai1, Gnaq
Chain IDs:D (auth: Q)
Chain Length:353
Number of Molecules:1
Biological Source:Rattus norvegicus, Mus musculus

UniProt ID:P21279,P10824 Pfam ID:PF00503

Ligand Molecules

ALF

GDP

Primary Citation

Snapshot of Activated G Proteins at the Membrane: The Gq-GRK2-G Complex

Tesmer, V.M, Kawano, T, Shankaranarayanan, A, Kozasa, T, Tesmer, J.J.G.Show

Science 310 1686 1690 (2005)

PMID: 16339447 DOI: 10.1126/science.1118890

Abstact

G protein-coupled receptor kinase 2 (GRK2) plays a key role in the desensitization of G protein-coupled receptor signaling by phosphorylating activated heptahelical receptors and by sequestering heterotrimeric G proteins. We report the atomic structure of GRK2 in complex with Galphaq and Gbetagamma, in which the activated Galpha subunit of Gq is fully dissociated from Gbetagamma and dramatically reoriented from its position in the inactive Galphabetagamma heterotrimer. Galphaq forms an effector-like interaction with the GRK2 regulator of G protein signaling (RGS) homology domain that is distinct from and does not overlap with that used to bind RGS proteins such as RGS4.

Legend

Protein

Chemical

Disease

Primary Citation of related structures