1nu4

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Template:STRUCTURE 1nu4

Contents 1 U1A RNA binding domain at 1.8 angstrom resolution reveals a pre-organized C-terminal helix 2 Function 3 About this Structure 4 Reference

U1A RNA binding domain at 1.8 angstrom resolution reveals a pre-organized C-terminal helix

Template:ABSTRACT PUBMED 12876372

Function

[SNRPA_HUMAN] Binds stem loop II of U1 snRNA. It is the first snRNP to interact with pre-mRNA. This interaction is required for the subsequent binding of U2 snRNP and the U4/U6/U5 tri-snRNP. In a snRNP-free form (SF-A) may be involved in coupled pre-mRNA splicing and polyadenylation process. Binds preferentially to the 5'-UGCAC-3' motif in vitro.^[1]

About this Structure

1nu4 is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

• Rupert PB, Xiao H, Ferre-D'Amare AR. U1A RNA-binding domain at 1.8 A resolution. Acta Crystallogr D Biol Crystallogr. 2003 Aug;59(Pt 8):1521-4. Epub 2003, Jul 23. PMID:12876372

1. ↑ Lutz CS, Cooke C, O'Connor JP, Kobayashi R, Alwine JC. The snRNP-free U1A (SF-A) complex(es): identification of the largest subunit as PSF, the polypyrimidine-tract binding protein-associated splicing factor. RNA. 1998 Dec;4(12):1493-9. PMID:9848648