1wm3: Difference between revisions
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'''Crystal structure of human SUMO-2 protein''' | {{Structure | ||
|PDB= 1wm3 |SIZE=350|CAPTION= <scene name='initialview01'>1wm3</scene>, resolution 1.2Å | |||
|SITE= | |||
|LIGAND= | |||
|ACTIVITY= | |||
|GENE= SUMO-2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]) | |||
}} | |||
'''Crystal structure of human SUMO-2 protein''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1WM3 is a [ | 1WM3 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1WM3 OCA]. | ||
==Reference== | ==Reference== | ||
Crystal structures of the human SUMO-2 protein at 1.6 A and 1.2 A resolution: implication on the functional differences of SUMO proteins., Huang WC, Ko TP, Li SS, Wang AH, Eur J Biochem. 2004 Oct;271(20):4114-22. PMID:[http:// | Crystal structures of the human SUMO-2 protein at 1.6 A and 1.2 A resolution: implication on the functional differences of SUMO proteins., Huang WC, Ko TP, Li SS, Wang AH, Eur J Biochem. 2004 Oct;271(20):4114-22. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15479240 15479240] | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: Wang, A H.J.]] | [[Category: Wang, A H.J.]] | ||
[[Category: half-open barrel]] | [[Category: half-open barrel]] | ||
[[Category: two | [[Category: two helice]] | ||
[[Category: ubiquitin fold]] | [[Category: ubiquitin fold]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 14:58:44 2008'' | ||
Revision as of 12:58, 20 March 2008
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| 1wm3, resolution 1.2Å | |||||||||||||
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| Gene: | SUMO-2 (Homo sapiens) | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
Crystal structure of human SUMO-2 protein
Overview
The SUMO proteins are a class of small ubiquitin-like modifiers. SUMO is attached to a specific lysine side chain on the target protein via an isopeptide bond with its C-terminal glycine. There are at least four SUMO proteins in humans, which are involved in protein trafficking and targeting. A truncated human SUMO-2 protein that contains residues 9-93 was expressed in Escherichia coli and crystallized in two different unit cells, with dimensions of a=b=75.25 A, c=29.17 A and a=b=74.96 A, c=33.23 A, both belonging to the rhombohedral space group R3. They diffracted X-rays to 1.6 A and 1.2 A resolution, respectively. The structures were determined by molecular replacement using the yeast SMT3 protein as a search model. Subsequent refinements yielded R/Rfree values of 0.169/0.190 and 0.119/0.185, at 1.6 A and 1.2 A, respectively. The peptide folding of SUMO-2 consists of a half-open beta-barrel and two flanking alpha-helices with secondary structural elements arranged as betabetaalphabetabetaalphabeta in the sequence, identical to those of ubiquitin, SMT3 and SUMO-1. Comparison of SUMO-2 with SUMO-1 showed a surface region near the C terminus with significantly different charge distributions. This may explain their distinct intracellular locations. In addition, crystal-packing analysis suggests a possible trimeric assembly of the SUMO-2 protein, of which the biological significance remains to be determined.
About this Structure
1WM3 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Crystal structures of the human SUMO-2 protein at 1.6 A and 1.2 A resolution: implication on the functional differences of SUMO proteins., Huang WC, Ko TP, Li SS, Wang AH, Eur J Biochem. 2004 Oct;271(20):4114-22. PMID:15479240
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