1x4a: Difference between revisions

<table><tr><td colspan='2'>[[1x4a]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1X4A OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1X4A FirstGlance]. <br>

</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">SFRS1; ASF; SF2; SF2P33 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>

<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1x4a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1x4a OCA], [http://pdbe.org/1x4a PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1x4a RCSB], [http://www.ebi.ac.uk/pdbsum/1x4a PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1x4a ProSAT], [http://www.topsan.org/Proteins/RSGI/1x4a TOPSAN]</span></td></tr>

[[http://www.uniprot.org/uniprot/SRSF1_HUMAN SRSF1_HUMAN]] Plays a role in preventing exon skipping, ensuring the accuracy of splicing and regulating alternative splicing. Interacts with other spliceosomal components, via the RS domains, to form a bridge between the 5'- and 3'-splice site binding components, U1 snRNP and U2AF. Can stimulate binding of U1 snRNP to a 5'-splice site-containing pre-mRNA. Binds to purine-rich RNA sequences, either the octamer, 5'-RGAAGAAC-3' (r=A or G) or the decamers, AGGACAGAGC/AGGACGAAGC. Binds preferentially to the 5'-CGAGGCG-3' motif in vitro. Three copies of the octamer constitute a powerful splicing enhancer in vitro, the ASF/SF2 splicing enhancer (ASE) which can specifically activate ASE-dependent splicing. Isoform ASF-2 and isoform ASF-3 act as splicing repressors.<ref>PMID:8223481</ref> <ref>PMID:8139654</ref>