ISDA

Deposition Date 2003-06-12

Release Date 2003-06-26

Last Version Date 2024-05-08

Entry Detail

PDB ID:

1OIA

Keywords:

RIBONUCLEOPROTEIN

Title:

U1A rnp domain 1-95

Biological Source:

Source Organism:

HOMO SAPIENS (Taxon ID: 9606)

Host Organism:

ESCHERICHIA COLI

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.40 Å

R-Value Free:

0.24

R-Value Work:

0.19

R-Value Observed:

0.19

Space Group:

I 41 3 2

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A
Gene (Uniprot):SNRPA
Chain IDs:A, B
Chain Length:95
Number of Molecules:2
Biological Source:HOMO SAPIENS

UniProt ID:P09012 Pfam ID:PF00076

Primary Citation

Crystal Structure of the RNA-Binding Domain of the U1 Small Nuclear Ribonucleoprotein A

Nagai, K, Oubridge, C, Jessen, T.H, Li, J, Evans, P.R.Show

Nature 348 515 ? (1990)

PMID: 2147232 DOI: 10.1038/348515A0

Abstact

The crystal structure of the RNA binding domain of the U1 small nuclear ribonucleoprotein A, which forms part of the ribonucleoprotein complex involved in the excision of introns, has been solved. It contains a four-stranded beta sheet and two alpha helices. The highly conserved segments designated RNP1 and RNP2 lie side by side on the middle two beta strands. U1 RNA binding studies of mutant proteins suggest that the RNA binds to the four-stranded beta sheet and to the flexible loops on one end.

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Primary Citation of related structures