ISDA

Deposition Date 1994-11-23

Release Date 1995-02-07

Last Version Date 2024-02-14

Entry Detail

PDB ID:

1TAG

Keywords:

GTP-BINDING PROTEIN

Title:

STRUCTURAL DETERMINANTS FOR ACTIVATION OF THE ALPHA-SUBUNIT OF A HETEROTRIMERIC G PROTEIN

Biological Source:

Source Organism:

Bos taurus (Taxon ID: 9913)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.80 Å

R-Value Free:

0.21

R-Value Work:

0.18

R-Value Observed:

0.18

Space Group:

I 2 2 2

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:TRANSDUCIN-ALPHA
Gene (Uniprot):GNAT1
Chain IDs:A
Chain Length:324
Number of Molecules:1
Biological Source:Bos taurus

UniProt ID:P04695 Pfam ID:PF00503

Ligand Molecules

GDP

Primary Citation

Structural determinants for activation of the alpha-subunit of a heterotrimeric G protein.

Lambright, D.G, Noel, J.P, Hamm, H.E, Sigler, P.B, Noel, J.P, Hamm, H.E, Sigler, P.B.Show

Nature 369 621 628 (1994)

PMID: 8208289 DOI: 10.1038/369621a0

Abstact

The 1.8 A crystal structure of transducin alpha.GDP, when compared to that of the activated complex with GTP-gamma S, reveals the nature of the conformational changes that occur on activation of a heterotrimeric G-protein alpha-subunit. Structural changes initiated by direct contacts with the terminal phosphate of GTP propagate to regions that have been implicated in effector activation. The changes are distinct from those observed in other members of the GTPase superfamily.

Legend

Protein

Chemical

Disease

Primary Citation of related structures