1tbg

<StructureSection load='1tbg' size='340' side='right' caption='[[1tbg]], [[Resolution|resolution]] 2.10&Aring;' scene=''>

<table><tr><td colspan='2'>[[1tbg]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. The October 2004 RCSB PDB [http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''G Proteins'' by David S. Goodsell is [http://dx.doi.org/10.2210/rcsb_pdb/mom_2004_10 10.2210/rcsb_pdb/mom_2004_10]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1TBG OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1TBG FirstGlance]. <br>

</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1tbg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1tbg OCA], [http://pdbe.org/1tbg PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1tbg RCSB], [http://www.ebi.ac.uk/pdbsum/1tbg PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1tbg ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/GBB1_HUMAN GBB1_HUMAN]] Guanine nucleotide-binding proteins (G proteins) are involved as a modulator or transducer in various transmembrane signaling systems. The beta and gamma chains are required for the GTPase activity, for replacement of GDP by GTP, and for G protein-effector interaction.<ref>PMID:18611381</ref> [[http://www.uniprot.org/uniprot/GBG1_BOVIN GBG1_BOVIN]] Guanine nucleotide-binding proteins (G proteins) are involved as a modulator or transducer in various transmembrane signaling systems. The beta and gamma chains are required for the GTPase activity, for replacement of GDP by GTP, and for G protein-effector interaction.

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== Publication Abstract from PubMed ==

Many signalling cascades use seven-helical transmembrane receptors coupled to heterotrimeric G proteins (G alpha beta gamma) to convert extracellular signals into intracellular responses. Upon nucleotide exchange catalysed by activated receptors, heterotrimers dissociate into GTP-bound G alpha subunits and G beta gamma dimers, either of which can modulate many downstream effectors. Here we use multiwavelength anomalous diffraction data to solve the crystal structure of the beta gamma dimer of the G protein transducin. The beta-subunit is primarily a seven-bladed beta-propeller that is partially encircled by an extended gamma-subunit. The beta-propeller, which contains seven structurally similar WD repeats, defines the stereochemistry of the WD repeat and the probable architecture of all WD-repeat-containing domains. The structure details interactions between G protein beta- and gamma-subunits and highlights regions implicated in effector modulation for the conserved family of G protein beta gamma dimers.

Crystal structure of a G-protein beta gamma dimer at 2.1A resolution.,Sondek J, Bohm A, Lambright DG, Hamm HE, Sigler PB Nature. 1996 Jan 25;379(6563):369-74. PMID:8552196<ref>PMID:8552196</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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<div class="pdbe-citations 1tbg" style="background-color:#fffaf0;"></div>

*[[Transducin|Transducin]]

[[Category: Bohm, A]]

[[Category: Hamm, H E]]

[[Category: Lambright, D G]]

[[Category: Sigler, P B]]

[[Category: Sondek, J S]]

[[Category: Transducer]]