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    SF3B2 splicing factor 3b, subunit 2, 145kDa [ Homo sapiens (human) ]

    Gene ID: 10992, updated on 5-May-2013
    Official Symbol
    SF3B2provided by HGNC
    Official Full Name
    splicing factor 3b, subunit 2, 145kDaprovided by HGNC
    Primary source
    HGNC:10769
    See related
    Ensembl:ENSG00000087365; HPRD:10410; MIM:605591; Vega:OTTHUMG00000166751
    Gene type
    protein coding
    RefSeq status
    REVIEWED
    Organism
    Homo sapiens
    Lineage
    Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
    Also known as
    Cus1; SF3b1; SAP145; SF3B145; SF3b150
    Summary
    This gene encodes subunit 2 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. Subunit 2 associates with pre-mRNA upstream of the branch site at the anchoring site. Subunit 2 also interacts directly with subunit 4 of the splicing factor 3b complex. Subunit 2 is a highly hydrophilic protein with a proline-rich N-terminus and a glutamate-rich stretch in the C-terminus. [provided by RefSeq, Jul 2008]
    Location :
    11q13.1
    Sequence :
    Chromosome: 11; NC_000011.9 (65819816..65836382)
    See SF3B2 in Epigenomics, MapViewer

    Chromosome 11 - NC_000011.9Genomic Context describing neighboring genes Neighboring gene cation channel, sperm associated 1 Neighboring gene galactose-3-O-sulfotransferase 3 Neighboring gene phosphofurin acidic cluster sorting protein 1 Neighboring gene kinesin light chain 2

    Protein Gene Interaction Pubs
    Vpr, p15 vpr Interaction of HIV-1 Vpr with SAP145 inhibits SAP145-SAP49 complex formation PubMed
    vpr HIV-1 Vpr induces checkpoint activation and G2 arrest by binding to the CUS1 domain of SAP145 and interfering with the functions of the SAP145 and SAP49 proteins, two subunits of the multimeric splicing factor 3b (SF3b) PubMed
    vpr HIV-1 Vpr interacts with and co-localizes with SAP145; this interaction is mediated through the C-terminal domain (residues 49-96) of Vpr PubMed
    pol gag-pol Positional proteomics analysis identifies the cleavage of human splicing factor 3b, subunit 2, 145kDa (SF3B2) at amino acid residues 668-669 by the HIV-1 protease PubMed

    Go to the HIV-1, Human Protein Interaction Database

    Products Interactant Other Gene Complex Source Pubs Description
    AAA97461.1 NP_005841.1 SF3B4    BIND  PubMed SAP145 interacts with SAP49. 
    Q13435 Q15427 SF3B4    HPRD  PubMed  
    Q13435 P84022 SMAD3    HPRD  PubMed  
    Q13435 O14776 TCERG1    HPRD  PubMed  
    XP_290506.3 NP_005893.1 SMAD3    BIND  PubMed Smad3 interacts with SF3b2. This interaction is modeled on demonstrated interaction between human Smad3 and mouse SF3b2. 
    BioGRID:116188 BioGRID:106819 APBB1    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:106848 APP    BioGRID  PubMed Reconstituted Complex 
    BioGRID:116188 BioGRID:106901 ARRB1    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:106902 ARRB2    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:107110 BLM    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:122489 C7orf25    BioGRID  PubMed Two-hybrid 
    BioGRID:116188 BioGRID:122420 C8orf33    BioGRID  PubMed Two-hybrid 
    BioGRID:116188 BioGRID:120937 CAND1    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:107424 CDC5L    BioGRID  PubMed Affinity Capture-MS; Co-purification 
    BioGRID:116188 BioGRID:107841 CSNK2A1    BioGRID  PubMed Biochemical Activity 
    BioGRID:116188 BioGRID:114030 CUL3    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:107971 DAB2    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:114027 DHX16    BioGRID  PubMed Affinity Capture-Luminescence; Two-hybrid 
    BioGRID:116188 BioGRID:199230 Dlg4    BioGRID  PubMed Protein-peptide 
    BioGRID:116188 BioGRID:971788 EBNA-LP    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:115119 EIF4A3    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:125626 FRA10AC1    BioGRID  PubMed Affinity Capture-Luminescence; Two-hybrid 
    BioGRID:116188 BioGRID:117520 GIGYF2    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:109272 H3F3A    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:115331 HDAC5    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:109424 HNRNPC    BioGRID  PubMed Two-hybrid 
    BioGRID:116188 BioGRID:115114 KIAA0101    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:116966 KIAA0368    BioGRID  PubMed Two-hybrid 
    BioGRID:116188 BioGRID:121778 LSM2    BioGRID  PubMed Two-hybrid 
    BioGRID:116188 BioGRID:118105 LSM3    BioGRID  PubMed Two-hybrid 
    BioGRID:116188 BioGRID:110290 MAGOH    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:121122 MEPCE    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:111127 PCBP2    BioGRID  PubMed Two-hybrid 
    BioGRID:116188 BioGRID:124296 PHF5A    BioGRID  PubMed Co-fractionation 
    BioGRID:116188 BioGRID:114577 PRPF3    BioGRID  PubMed Affinity Capture-Luminescence; Two-hybrid 
    BioGRID:116188 BioGRID:120792 PRPF40A    BioGRID  PubMed Affinity Capture-MS; Two-hybrid 
    BioGRID:116188 BioGRID:115842 PRPF8    BioGRID  PubMed Affinity Capture-Luminescence; Two-hybrid 
    BioGRID:116188 BioGRID:122588 RBM42    BioGRID  PubMed Co-fractionation 
    BioGRID:116188 BioGRID:115478 RBM7    BioGRID  PubMed Reconstituted Complex; Two-hybrid 
    BioGRID:116188 BioGRID:115265 RBM8A    BioGRID  PubMed Two-hybrid 
    BioGRID:116188 BioGRID:118134 RBMX    BioGRID  PubMed Co-fractionation 
    BioGRID:116188 BioGRID:113523 RNF113A    BioGRID  PubMed Affinity Capture-Luminescence; Two-hybrid 
    BioGRID:116188 BioGRID:117873 RNU11    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:117872 RNU12-2P    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:113826 SF3A2    BioGRID  PubMed Affinity Capture-MS; Co-fractionation 
    BioGRID:116188 BioGRID:117017 SF3B1    BioGRID  PubMed Affinity Capture-MS; Affinity Capture-Western; Co-fractionation 
    BioGRID:116188 BioGRID:119651 SF3B14    BioGRID  PubMed Co-fractionation 
    BioGRID:116188 BioGRID:117016 SF3B3    BioGRID  PubMed Affinity Capture-Western; Co-fractionation 
    BioGRID:116188 BioGRID:115554 SF3B4    BioGRID  PubMed Affinity Capture-Luminescence; Co-fractionation; Far Western; Two-hybrid 
    BioGRID:116188 BioGRID:123645 SF3B5    BioGRID  PubMed Co-fractionation 
    BioGRID:116188 BioGRID:119602 SIRT7    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:115820 SLU7    BioGRID  PubMed Affinity Capture-Luminescence; Two-hybrid 
    BioGRID:116188 BioGRID:121244 SMARCAD1    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:133034 SMIM20    BioGRID  PubMed Co-fractionation 
    BioGRID:116188 BioGRID:115574 SMNDC1    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:121411 SMURF1    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:116661 SNRNP200    BioGRID  PubMed Two-hybrid 
    BioGRID:116188 BioGRID:112511 SNRPA1    BioGRID  PubMed Co-fractionation 
    BioGRID:116188 BioGRID:112513 SNRPB2    BioGRID  PubMed Co-fractionation 
    BioGRID:116188 BioGRID:112516 SNRPD1    BioGRID  PubMed Co-fractionation 
    BioGRID:116188 BioGRID:112518 SNRPD3    BioGRID  PubMed Co-fractionation 
    BioGRID:116188 BioGRID:115544 SRRM1    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:117071 SRRM2    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:114231 SRSF9    BioGRID  PubMed Co-fractionation 
    BioGRID:116188 BioGRID:112497 SUMO2    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:212207 Sf3a1    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:112779 TCEA1    BioGRID  PubMed Affinity Capture-MS; Co-fractionation 
    BioGRID:116188 BioGRID:116120 TCERG1    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:112873 TERF2    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:115305 THOC1    BioGRID  PubMed Co-fractionation; Two-hybrid 
    BioGRID:116188 BioGRID:115292 THRAP3    BioGRID  PubMed Co-fractionation 
    BioGRID:116188 BioGRID:120115 TMED9    BioGRID  PubMed Co-fractionation 
    BioGRID:116188 BioGRID:118900 TMOD2    BioGRID  PubMed Co-fractionation 
    BioGRID:116188 BioGRID:125269 TOE1    BioGRID  PubMed Two-hybrid 
    BioGRID:116188 BioGRID:115209 TOX4    BioGRID  PubMed Co-fractionation 
    BioGRID:116188 BioGRID:113021 TPM1    BioGRID  PubMed Co-fractionation 
    BioGRID:116188 BioGRID:113022 TPM2    BioGRID  PubMed Co-fractionation 
    BioGRID:116188 BioGRID:114333 TRIM24    BioGRID  PubMed Co-fractionation 
    BioGRID:116188 BioGRID:127391 TTC14    BioGRID  PubMed Two-hybrid 
    BioGRID:116188 BioGRID:113157 U2AF1    BioGRID  PubMed Affinity Capture-Luminescence; Two-hybrid 
    BioGRID:116188 BioGRID:113164 UBC    BioGRID  PubMed Affinity Capture-MS 
    BioGRID:116188 BioGRID:113251 VASP    BioGRID  PubMed Co-fractionation 
    BioGRID:116188 BioGRID:113306 WHSC1    BioGRID  PubMed Affinity Capture-RNA 
    BioGRID:116188 BioGRID:121273 XAB2    BioGRID  PubMed Affinity Capture-Luminescence; Two-hybrid 
    BioGRID:116188 BioGRID:110959 YBX1    BioGRID  PubMed Co-fractionation 
    BioGRID:116188 BioGRID:120174 ZCCHC10    BioGRID  PubMed Two-hybrid 
    BioGRID:116188 BioGRID:124850 ZNF830    BioGRID  PubMed Affinity Capture-Luminescence; Two-hybrid 
    BioGRID:116188 BioGRID:1205540 vpr    BioGRID  PubMed Affinity Capture-Western; Reconstituted Complex; Two-hybrid 
    • Gene Expression, organism-specific biosystem (from REACTOME)
      Gene Expression, organism-specific biosystemGene Expression covers the pathways by which genomic DNA is transcribed to yield RNA, the regulation of these transcription processes, and the pathways by which newly-made RNA Transcripts are process...
    • Processing of Capped Intron-Containing Pre-mRNA, organism-specific biosystem (from REACTOME)
      Processing of Capped Intron-Containing Pre-mRNA, organism-specific biosystemCo-transcriptional pre-mRNA splicing is not obligatory. Pre-mRNA splicing begins co-transcriptionally and often continues post-transcriptionally. Human genes contain an average of nine introns per ge...
    • Spliceosome, organism-specific biosystem (from KEGG)
      Spliceosome, organism-specific biosystemAfter transcription, eukaryotic mRNA precursors contain protein-coding exons and noncoding introns. In the following splicing, introns are excised and exons are joined by a macromolecular complex, th...
    • Spliceosome, conserved biosystem (from KEGG)
      Spliceosome, conserved biosystemAfter transcription, eukaryotic mRNA precursors contain protein-coding exons and noncoding introns. In the following splicing, introns are excised and exons are joined by a macromolecular complex, th...
    • Spliceosome, U2-snRNP, organism-specific biosystem (from KEGG)
      Spliceosome, U2-snRNP, organism-specific biosystemStructural complex; Genetic information processing; Spliceosome
    • mRNA Splicing, organism-specific biosystem (from REACTOME)
      mRNA Splicing, organism-specific biosystemThe process in which excision of introns from the primary transcript of messenger RNA (mRNA) is followed by ligation of the two exon termini exposed by removal of each intron, is called mRNA splicing...
    • mRNA Splicing - Major Pathway, organism-specific biosystem (from REACTOME)
      mRNA Splicing - Major Pathway, organism-specific biosystemThe splicing of pre-mRNA occurs within a large, very dynamic complex, designated the 'spliceosome'. The 50-60S spliceosomes are estimated to be 40-60 nm in diameter, and have molecular weights in the...
    • mRNA Splicing - Minor Pathway, organism-specific biosystem (from REACTOME)
      mRNA Splicing - Minor Pathway, organism-specific biosystemThe splicing of a subset of pre-mRNA introns occurs by a second pathway, designated the AT-AC or U12-dependent splicing pathway. AT-AC introns have highly conserved, non-canonical splice sites that ...
    • mRNA processing, organism-specific biosystem (from WikiPathways)
      mRNA processing, organism-specific biosystemThis process describes the conversion of precursor messenger RNA into mature messenger RNA (mRNA). The pre-mRNA molecule undergoes three main modifications. These modifications are 5' capping, 3' po...

    Markers

    Homology

    Gene Ontology Provided by GOA

    Function Evidence Code Pubs
    nucleic acid binding IEA
    Inferred from Electronic Annotation
    more info
     
    Process Evidence Code Pubs
    RNA splicing TAS
    Traceable Author Statement
    more info
     
    gene expression TAS
    Traceable Author Statement
    more info
     
    mRNA processing TAS
    Traceable Author Statement
    more info
    PubMed 
    mRNA splicing, via spliceosome IC
    Inferred by Curator
    more info
    PubMed 
    mRNA splicing, via spliceosome TAS
    Traceable Author Statement
    more info
     
    virus-host interaction IEA
    Inferred from Electronic Annotation
    more info
     
    Component Evidence Code Pubs
    U12-type spliceosomal complex IDA
    Inferred from Direct Assay
    more info
    PubMed 
    catalytic step 2 spliceosome IDA
    Inferred from Direct Assay
    more info
    PubMed 
    NOT nucleolus IDA
    Inferred from Direct Assay
    more info
     
    nucleoplasm TAS
    Traceable Author Statement
    more info
     
    nucleus IDA
    Inferred from Direct Assay
    more info
     
    spliceosomal complex IDA
    Inferred from Direct Assay
    more info
    PubMed 
    Preferred Names
    splicing factor 3B subunit 2
    Names
    splicing factor 3B subunit 2
    SAP 145
    spliceosome associated protein 145
    spliceosome-associated protein 145
    pre-mRNA splicing factor SF3b 145 kDa subunit
    pre-mRNA-splicing factor SF3b 145 kDa subunit

    RefSeqs maintained independently of Annotated Genomes

    These reference sequences exist independently of genome builds. Explain

    These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

    mRNA and Protein(s)

    1. NM_006842.2NP_006833.2  splicing factor 3B subunit 2

      Status: REVIEWED

      Source sequence(s)
      BC014125, BC053577, BE677116, BF311442
      Consensus CDS
      CCDS31612.1
      UniProtKB/Swiss-Prot
      Q13435
      Related
      ENSP00000318861, OTTHUMP00000234152, ENST00000322535, OTTHUMT00000391352
      Conserved Domains (3) summary
      pfam04037
      Location:469597
      Blast Score: 663
      DUF382; Domain of unknown function (DUF382)
      smart00581
      Location:601659
      Blast Score: 221
      PSP; proline-rich domain in spliceosome associated proteins
      pfam02037
      Location:2457
      Blast Score: 98
      SAP; SAP domain

    RefSeqs of Annotated Genomes: Homo sapiens Annotation Release 104

    The following sections contain reference sequences that belong to a specific genome build. Explain

    Reference GRCh37.p10 Primary Assembly

    Genomic

    1. NC_000011.9 Reference GRCh37.p10 Primary Assembly

      Range
      65819816..65836382
      Download
      GenBank, FASTA, Sequence Viewer (Graphics)

    Alternate HuRef

    Genomic

    1. AC_000143.1 Alternate HuRef

      Range
      62145713..62162283
      Download
      GenBank, FASTA, Sequence Viewer (Graphics)

    Alternate CHM1_1.0

    Genomic

    1. NC_018922.1 Alternate CHM1_1.0

      Range
      65739970..65756536
      Download
      GenBank, FASTA, Sequence Viewer (Graphics)

      Supplemental Content

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