2OZB image
Deposition Date 2007-02-26
Release Date 2007-03-20
Last Version Date 2023-08-30
Entry Detail
PDB ID:
2OZB
Keywords:
RNA BINDING PROTEIN/RNA
Title:
Structure of a human Prp31-15.5K-U4 snRNA complex
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
(Taxon ID: )
Host Organism:
Escherichia coli BL21(DE3)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.60 Å
R-Value Free:
0.24
R-Value Work:
0.20
R-Value Observed:
0.20
Space Group:
P 21 21 21
2OZB validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:U4/U6.U5 tri-snRNP 15.5 kDa protein
Gene (Uniprot):SNU13
Chain IDs:C (auth: A), E (auth: D)
Chain Length:130
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P55769 Pfam ID:PF01248
Protein Blast
Polymer Type:polypeptide(L)
Molecule:U4/U6 small nuclear ribonucleoprotein Prp31
Gene (Uniprot):PRPF31
Chain IDs:D (auth: B), F (auth: E)
Chain Length:260
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:Q8WWY3 Pfam ID:PF01798
Polymer Type:polyribonucleotide
Molecule:RNA comprising the 5' Stem-Loop RNA of U4snRNA
Chain IDs:A (auth: C), B (auth: F)
Chain Length:33
Number of Molecules:2
Biological Source:
Ligand Molecules
CA
Primary Citation
Binding of the human Prp31 Nop domain to a composite RNA-protein platform in U4 snRNP.
Science 316 115 120 (2007)
PMID: 17412961 DOI: 10.1126/science.1137924

Abstact

Although highly homologous, the spliceosomal hPrp31 and the nucleolar Nop56 and Nop58 (Nop56/58) proteins recognize different ribonucleoprotein (RNP) particles. hPrp31 interacts with complexes containing the 15.5K protein and U4 or U4atac small nuclear RNA (snRNA), whereas Nop56/58 associate with 15.5K-box C/D small nucleolar RNA complexes. We present structural and biochemical analyses of hPrp31-15.5K-U4 snRNA complexes that show how the conserved Nop domain in hPrp31 maintains high RNP binding selectivity despite relaxed RNA sequence requirements. The Nop domain is a genuine RNP binding module, exhibiting RNA and protein binding surfaces. Yeast two-hybrid analyses suggest a link between retinitis pigmentosa and an aberrant hPrp31-hPrp6 interaction that blocks U4/U6-U5 tri-snRNP formation.

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Disease

Primary Citation of related structures
1E7K