1x79

<table><tr><td colspan='2'>[[1x79]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1X79 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1X79 FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=DTT:2,3-DIHYDROXY-1,4-DITHIOBUTANE'>DTT</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>

<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">GGA1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN]), RABEP1, RABPT5, RABPT5A ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>

<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1x79 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1x79 OCA], [http://pdbe.org/1x79 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1x79 RCSB], [http://www.ebi.ac.uk/pdbsum/1x79 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1x79 ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/GGA1_HUMAN GGA1_HUMAN]] Plays a role in protein sorting and trafficking between the trans-Golgi network (TGN) and endosomes. Mediates the ARF-dependent recruitment of clathrin to the TGN and binds ubiquitinated proteins and membrane cargo molecules with a cytosolic acidic cluster-dileucine (AC-LL) motif.<ref>PMID:11301005</ref> [[http://www.uniprot.org/uniprot/RABE1_HUMAN RABE1_HUMAN]] Rab effector protein acting as linker between gamma-adaptin, RAB4A and RAB5A. Involved in endocytic membrane fusion and membrane trafficking of recycling endosomes. Stimulates RABGEF1 mediated nucleotide exchange on RAB5A.<ref>PMID:8521472</ref> <ref>PMID:10698684</ref> <ref>PMID:11452015</ref> <ref>PMID:12773381</ref>

<div style="background-color:#fffaf0;">

== Publication Abstract from PubMed ==

GGA proteins coordinate the intracellular trafficking of clathrin-coated vesicles through their interaction with several other proteins. The GAT domain of GGA proteins interacts with ARF, ubiquitin, and Rabaptin5. The GGA-Rabaptin5 interaction is believed to function in the fusion of trans-Golgi-derived vesicles to endosomes. We determined the crystal structure of a human GGA1 GAT domain fragment in complex with the Rabaptin5 GAT-binding domain. In this structure, the Rabaptin5 domain is a 90-residue-long helix. At the N-terminal end, it forms a parallel coiled-coil homodimer, which binds one GAT domain of GGA1. In the C-terminal region, it further assembles into a four-helix bundle tetramer. The Rabaptin5-binding motif of the GGA1 GAT domain consists of a three-helix bundle. Thus, the binding between Rabaptin5 and GGA1 GAT domain is based on a helix bundle-helix bundle interaction. The current structural observation is consistent with previously reported mutagenesis data, and its biological relevance is further confirmed by new mutagenesis studies and affinity analysis. The four-helix bundle structure of Rabaptin5 suggests a functional role in tethering organelles.

Crystal structure of human GGA1 GAT domain complexed with the GAT-binding domain of Rabaptin5.,Zhu G, Zhai P, He X, Wakeham N, Rodgers K, Li G, Tang J, Zhang XC EMBO J. 2004 Oct 13;23(20):3909-17. Epub 2004 Sep 30. PMID:15457209<ref>PMID:15457209</ref>

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

</div>

<div class="pdbe-citations 1x79" style="background-color:#fffaf0;"></div>

[[Category: Human]]

[[Category: Zhang, X C]]

[[Category: Zhu, G]]

[[Category: Rabaptin5]]