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This gene encodes subunit 1 of the splicing factor 3b protein complex. Splicing factor 3b, together with splicing factor 3a and a 12S RNA unit, forms the U2 small nuclear ribonucleoproteins complex (U2 snRNP). The splicing factor 3b/3a complex binds pre-mRNA upstream of the intron's branch site in a sequence independent manner and may anchor the U2 snRNP to the pre-mRNA. Splicing factor 3b is also a component of the minor U12-type spliceosome. The carboxy-terminal two-thirds of subunit 1 have 22 non-identical, tandem HEAT repeats that form rod-like, helical structures. Alternative splicing results in multiple transcript variants encoding different isoforms.
, pre-mRNA processing 10
, pre-mRNA splicing factor SF3b, 155 kDa subunit
, spliceosome-associated protein 155
, splicing factor 3B subunit 1
, pre-mRNA-splicing factor SF3b 155 kDa subunit
, splicing factor 3b, subunit 1, 155 kDa
, transforming growth factor alpha regulated gene 4
, 146 kDa nuclear protein
, splicing factor 3b, subunit 1, 155kDa
, splicing factor 3B subunit 1-like
, splicing factor 3b, subunit 1, 155kD