1OPI

SOLUTION STRUCTURE OF THE THIRD RNA RECOGNITION MOTIF (RRM) OF U2AF65 IN COMPLEX WITH AN N-TERMINAL SF1 PEPTIDE

• PDB DOI: https://doi.org/10.2210/pdb1OPI/pdb

• Classification: RNA BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2003-03-05 Released: 2004-03-16 
• Deposition Author(s): Selenko, P., Gregorovic, G., Sprangers, R., Stier, G., Rhani, Z., Kramer, A., Sattler, M.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 10 
• Selection Criteria: STRUCTURES WITH THE LEAST RESTRAINT VIOLATIONS, STRUCTURES WITH THE LOWEST ENERGY 

Literature

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.

(2003) Mol Cell 11: 965-976

• PubMed: 12718882 
• DOI: https://doi.org/10.1016/s1097-2765(03)00115-1
• Primary Citation of Related Structures:  
  1O0P, 1OPI


• PubMed Abstract: 
  

  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.

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Organizational Affiliation: 

European Molecular Biology Laboratory, Meyerhofstrasse 1, D-69117 Heidelberg, Germany.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 13.67 kDa 
• Atom Count: 956 
• Modelled Residue Count: 117 
• Deposited Residue Count: 117 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
SPLICING FACTOR U2AF 65 KDA SUBUNIT	A	104	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P26368 (Homo sapiens) Explore P26368  Go to UniProtKB:  P26368
PHAROS:  P26368 GTEx:  ENSG00000063244

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
SPLICING FACTOR SF1	B	13	N/A	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for Q15637 (Homo sapiens) Explore Q15637  Go to UniProtKB:  Q15637
PHAROS:  Q15637 GTEx:  ENSG00000168066

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 10 
• Selection Criteria: STRUCTURES WITH THE LEAST RESTRAINT VIOLATIONS, STRUCTURES WITH THE LOWEST ENERGY 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2004-03-16 
Deposition Author(s): Selenko, P., Gregorovic, G., Sprangers, R., Stier, G., Rhani, Z., Kramer, A., Sattler, M.

Revision History  

• Version 1.0: 2004-03-16
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2022-02-23
  Changes: Database references, Derived calculations
• Version 1.4: 2024-05-22
  Changes: Data collection