2g45: Difference between revisions
No edit summary |
No edit summary |
||
| Line 4: | Line 4: | ||
|PDB= 2g45 |SIZE=350|CAPTION= <scene name='initialview01'>2g45</scene>, resolution 1.99Å | |PDB= 2g45 |SIZE=350|CAPTION= <scene name='initialview01'>2g45</scene>, resolution 1.99Å | ||
|SITE= | |SITE= | ||
|LIGAND= <scene name='pdbligand= | |LIGAND= <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene> | ||
|ACTIVITY= [http://en.wikipedia.org/wiki/Ubiquitin_thiolesterase Ubiquitin thiolesterase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.2.15 3.1.2.15] | |ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Ubiquitin_thiolesterase Ubiquitin thiolesterase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.2.15 3.1.2.15] </span> | ||
|GENE= USP5, ISOT ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]) | |GENE= USP5, ISOT ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]) | ||
|DOMAIN= | |||
|RELATEDENTRY=[[2g43|2G43]] | |||
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2g45 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2g45 OCA], [http://www.ebi.ac.uk/pdbsum/2g45 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2g45 RCSB]</span> | |||
}} | }} | ||
| Line 14: | Line 17: | ||
==Overview== | ==Overview== | ||
Ubiquitin binding proteins regulate the stability, function, and/or localization of ubiquitinated proteins. Here we report the crystal structures of the zinc-finger ubiquitin binding domain (ZnF UBP) from the deubiquitinating enzyme isopeptidase T (IsoT, or USP5) alone and in complex with ubiquitin. Unlike other ubiquitin binding domains, this domain contains a deep binding pocket where the C-terminal diglycine motif of ubiquitin is inserted, thus explaining the specificity of IsoT for an unmodified C terminus on the proximal subunit of polyubiquitin. Mutations in the domain demonstrate that it is required for optimal catalytic activation of IsoT. This domain is present in several other protein families, and the ZnF UBP domain from an E3 ligase also requires the C terminus of ubiquitin for binding. These data suggest that binding the ubiquitin C terminus may be necessary for the function of other proteins. | Ubiquitin binding proteins regulate the stability, function, and/or localization of ubiquitinated proteins. Here we report the crystal structures of the zinc-finger ubiquitin binding domain (ZnF UBP) from the deubiquitinating enzyme isopeptidase T (IsoT, or USP5) alone and in complex with ubiquitin. Unlike other ubiquitin binding domains, this domain contains a deep binding pocket where the C-terminal diglycine motif of ubiquitin is inserted, thus explaining the specificity of IsoT for an unmodified C terminus on the proximal subunit of polyubiquitin. Mutations in the domain demonstrate that it is required for optimal catalytic activation of IsoT. This domain is present in several other protein families, and the ZnF UBP domain from an E3 ligase also requires the C terminus of ubiquitin for binding. These data suggest that binding the ubiquitin C terminus may be necessary for the function of other proteins. | ||
==About this Structure== | ==About this Structure== | ||
| Line 32: | Line 32: | ||
[[Category: Reyes-Turcu, F E.]] | [[Category: Reyes-Turcu, F E.]] | ||
[[Category: Wilkinson, K D.]] | [[Category: Wilkinson, K D.]] | ||
[[Category: deubiquitinating enzyme]] | [[Category: deubiquitinating enzyme]] | ||
[[Category: ubiquitin]] | [[Category: ubiquitin]] | ||
[[Category: zinc finger]] | [[Category: zinc finger]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 03:11:30 2008'' | ||