title: SF4 and SFRS14, two related putative splicing factors on human chromosome 19p13.11.
abstract: The splicing of nascent mRNA precursors is an essential step for the expression of all intron-containing eukaryotic genes. Removal of intron sequences from nascent transcripts is mediated by the spliceosome, a large multicomponent complex. We describe here the identification of two genes encoding related, putative splicing factors on human chromosome 19p13.11, SF4 (splicing factor 4) and SFRS14 (splicing factor arginine/serine-rich 14). Both genes encode proteins containing a SURP motif; this domain is found in several splicing proteins including Drosophila alternative splicing regulator, suppressor-of-white-apricot (SWAP) and the yeast splicing factor, prp21p. In addition, SF4 and SFRS14 contain a G-patch domain at their C-termini, a motif present in a large number of eukaryotic RNA-binding proteins. SFRS14 also contains an N-terminal region that is rich in arginine/serine residues, suggesting SFRS14 is a novel member of the SR-related family of pre-mRNA processing factors. We have also identified the mouse orthologues of SF4 and SFRS14, based on conserved domain organization and high sequence similarity. Interestingly, SFRS14 undergoes alternative 3'-end processing events that are conserved between human and mouse, suggesting a functional significance.
authors.affiliation: Institute of Genetics, Queen's Medical Centre, University of Nottingham, Nottingham NG7 2UH, UK.
authors.forename: Natalie D
authors.initials: ND
authors.lastname: Sampson
authors.forename: Jane E
authors.initials: JE
authors.lastname: Hewitt
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D001921:Brain / Q000196:embryology / Q000378:metabolism; D002888:Chromosomes, Human, Pair 19 / Q000235:genetics*; D003001:Cloning, Molecular; D018076:DNA, Complementary / Q000737:chemistry / Q000235:genetics; D005091:Exons; D015870:Gene Expression; D018507:Gene Expression Regulation, Developmental; D005796:Genes / Q000235:genetics; D006801:Humans; D007438:Introns; D008297:Male; D051379:Mice; D008969:Molecular Sequence Data; D009687:Nuclear Proteins; D012326:RNA Splicing; D000072260:RNA Splicing Factors; D016601:RNA-Binding Proteins / Q000235:genetics*; D016415:Sequence Alignment; D017422:Sequence Analysis, DNA; D017386:Sequence Homology, Amino Acid; D000068103:Serine-Arginine Splicing Factors
chemical_list: D018076:DNA, Complementary; D009687:Nuclear Proteins; D000072260:RNA Splicing Factors; D016601:RNA-Binding Proteins; C473326:SUGP1 protein, human; D000068103:Serine-Arginine Splicing Factors