1O0P image
Deposition Date 2003-02-24
Release Date 2003-05-06
Last Version Date 2024-05-22
Entry Detail
PDB ID:
1O0P
Keywords:
RNA BINDING PROTEIN
Title:
Solution Structure of the third RNA Recognition Motif (RRM) of U2AF65 in complex with an N-terminal SF1 peptide
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Escherichia coli BL21(DE3)
Method Details:
Experimental Method:
SOLUTION NMR
Conformers Calculated:
100
Conformers Submitted:
10
Selection Criteria:
structures with the least restraint violations,structures with the lowest energy
1O0P validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Splicing factor U2AF 65 kDa subunit
Gene (Uniprot):U2AF2
Chain IDs:A
Chain Length:104
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:P26368 Pfam ID:PF00076
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Splicing Factor SF1
Chain IDs:B
Chain Length:13
Number of Molecules:1
Biological Source:
UniProt ID:Q15637
Ligand Molecules
NA
Primary Citation
Structural Basis for the molecular recognition between human splicing factors U2AF65 and SF1/mBBP
Mol.Cell 11 965 976 (2003)
PMID: 12718882 DOI: 10.1016/S1097-2765(03)00115-1

Abstact

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.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
1O0P