1opi
From Proteopedia
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==Overview== | ==Overview== | ||
| - | The essential splicing factors SF1 and U2AF play an important role in the | + | The essential splicing factors SF1 and U2AF play an important role in the recognition of the pre-mRNA 3' splice site during early spliceosome assembly. The structure of the C-terminal RRM (RRM3) of human U2AF(65) complexed to an N-terminal peptide of SF1 reveals an extended negatively charged helix A and an additional helix C. Helix C shields the potential RNA binding surface. SF1 binds to the opposite, helical face of RRM3. It inserts a conserved tryptophan into a hydrophobic pocket between helices A and B in a way that strikingly resembles part of the molecular interface in the U2AF heterodimer. This molecular recognition establishes a paradigm for protein binding by a subfamily of noncanonical RRMs. |
==About this Structure== | ==About this Structure== | ||
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[[Category: non-canonical rna recognition motif]] | [[Category: non-canonical rna recognition motif]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 14:20:10 2008'' |
Revision as of 12:20, 21 February 2008
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SOLUTION STRUCTURE OF THE THIRD RNA RECOGNITION MOTIF (RRM) OF U2AF65 IN COMPLEX WITH AN N-TERMINAL SF1 PEPTIDE
Overview
The essential splicing factors SF1 and U2AF play an important role in the recognition of the pre-mRNA 3' splice site during early spliceosome assembly. The structure of the C-terminal RRM (RRM3) of human U2AF(65) complexed to an N-terminal peptide of SF1 reveals an extended negatively charged helix A and an additional helix C. Helix C shields the potential RNA binding surface. SF1 binds to the opposite, helical face of RRM3. It inserts a conserved tryptophan into a hydrophobic pocket between helices A and B in a way that strikingly resembles part of the molecular interface in the U2AF heterodimer. This molecular recognition establishes a paradigm for protein binding by a subfamily of noncanonical RRMs.
About this Structure
1OPI is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Structural basis for the molecular recognition between human splicing factors U2AF65 and SF1/mBBP., Selenko P, Gregorovic G, Sprangers R, Stier G, Rhani Z, Kramer A, Sattler M, Mol Cell. 2003 Apr;11(4):965-76. PMID:12718882
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