1n87: Difference between revisions
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|GENE= Prp19 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 Saccharomyces cerevisiae]) | |GENE= Prp19 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 Saccharomyces cerevisiae]) | ||
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1n87 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1n87 OCA], [http://www.ebi.ac.uk/pdbsum/1n87 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1n87 RCSB]</span> | |||
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[[Category: ubiquitin ligase]] | [[Category: ubiquitin ligase]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 22:26:45 2008'' | ||
Revision as of 22:26, 30 March 2008
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| Gene: | Prp19 (Saccharomyces cerevisiae) | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Solution structure of the U-box of Prp19
OverviewOverview
The structure of the U-box in the essential Saccharomyces cerevisiae pre-mRNA splicing factor Prp19p has been determined by NMR. The conserved zinc-binding sites supporting the cross-brace arrangement in RING-finger domains are replaced by hydrogen-bonding networks in the U-box. These hydrogen-bonding networks are necessary for the structural stabilization and activity of the U-box. A conservative Val-->Ile point mutation in the Prp19p U-box domain leads to pre-mRNA splicing defects in vivo. NMR analysis of this mutant shows that the substitution disrupts structural integrity of the U-box domain. Furthermore, comparison of the Prp19p U-box domain with known RING-E2 complex structures demonstrates that both U-box and RING-fingers contain a conserved interaction surface. Mutagenesis of residues at this interface, while not perturbing the structure of the U-box, abrogates Prp19p function in vivo. These comparative structural and functional analyses imply that the U-box and its associated ubiquitin ligase activity are critical for Prp19p function in vivo.
About this StructureAbout this Structure
1N87 is a Single protein structure of sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA.
ReferenceReference
Structural insights into the U-box, a domain associated with multi-ubiquitination., Ohi MD, Vander Kooi CW, Rosenberg JA, Chazin WJ, Gould KL, Nat Struct Biol. 2003 Apr;10(4):250-5. PMID:12627222
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