1dg3
From Proteopedia
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'''STRUCTURE OF HUMAN GUANYLATE BINDING PROTEIN-1 IN NUCLEOTIDE FREE FORM''' | '''STRUCTURE OF HUMAN GUANYLATE BINDING PROTEIN-1 IN NUCLEOTIDE FREE FORM''' | ||
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[[Category: Renault, L.]] | [[Category: Renault, L.]] | ||
[[Category: Wittinghofer, A.]] | [[Category: Wittinghofer, A.]] | ||
| - | [[Category: | + | [[Category: Dynamin related]] |
| - | [[Category: | + | [[Category: Gbp]] |
| - | [[Category: | + | [[Category: Gdp]] |
| - | [[Category: | + | [[Category: Gmp]] |
| - | [[Category: | + | [[Category: Gtp hydrolysis]] |
| - | [[Category: | + | [[Category: Interferon induced]] |
| - | [[Category: | + | [[Category: Large gtpase family]] |
| - | [[Category: | + | [[Category: Signaling protein]] |
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Revision as of 10:49, 2 May 2008
STRUCTURE OF HUMAN GUANYLATE BINDING PROTEIN-1 IN NUCLEOTIDE FREE FORM
Overview
Interferon-gamma is an immunomodulatory substance that induces the expression of many genes to orchestrate a cellular response and establish the antiviral state of the cell. Among the most abundant antiviral proteins induced by interferon-gamma are guanylate-binding proteins such as GBP1 and GBP2. These are large GTP-binding proteins of relative molecular mass 67,000 with a high-turnover GTPase activity and an antiviral effect. Here we have determined the crystal structure of full-length human GBP1 to 1.8 A resolution. The amino-terminal 278 residues constitute a modified G domain with a number of insertions compared to the canonical Ras structure, and the carboxy-terminal part is an extended helical domain with unique features. From the structure and biochemical experiments reported here, GBP1 appears to belong to the group of large GTP-binding proteins that includes Mx and dynamin, the common property of which is the ability to undergo oligomerization with a high concentration-dependent GTPase activity.
About this Structure
1DG3 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Structure of human guanylate-binding protein 1 representing a unique class of GTP-binding proteins., Prakash B, Praefcke GJ, Renault L, Wittinghofer A, Herrmann C, Nature. 2000 Feb 3;403(6769):567-71. PMID:10676968 Page seeded by OCA on Fri May 2 13:49:06 2008
