Gene Gene information from NCBI Gene database.
Entrez ID 23451
Gene name Splicing factor 3b subunit 1
Gene symbol SF3B1
Synonyms (NCBI Gene)
Hsh155MDSPRP10PRPF10SAP155SF3b155
Chromosome 2
Chromosome location 2q33.1
Summary 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-m
SNPs SNP information provided by dbSNP.
9
SNP ID Visualize variation Clinical significance Consequence
rs374250186 T>A,C,G Likely-pathogenic Non coding transcript variant, genic downstream transcript variant, coding sequence variant, missense variant
rs377023736 C>A,G Not-provided, likely-pathogenic, pathogenic Coding sequence variant, missense variant, genic downstream transcript variant, non coding transcript variant
rs559063155 T>A,C,G Likely-pathogenic Genic downstream transcript variant, missense variant, coding sequence variant, stop gained, non coding transcript variant
rs754688962 T>C,G Likely-pathogenic Genic downstream transcript variant, coding sequence variant, missense variant, non coding transcript variant
rs755415626 C>T Likely-pathogenic Genic downstream transcript variant, coding sequence variant, missense variant, non coding transcript variant
miRNA miRNA information provided by mirtarbase database.
215
miRTarBase ID miRNA Experiments Reference
MIRT052156 hsa-let-7b-5p CLASH 23622248
MIRT042496 hsa-miR-423-3p CLASH 23622248
MIRT041092 hsa-miR-504-5p CLASH 23622248
MIRT040227 hsa-miR-615-3p CLASH 23622248
MIRT052776 hsa-miR-1260b CLASH 23622248
Transcription factors Transcription factors information provided by TRRUST V2 database.
1
Transcription factor Regulation Reference
SF1 Unknown 16376933
Gene ontology (GO) Gene Ontology (GO) annotations describing the biological processes, molecular functions, and cellular components associated with a gene.
49
GO ID Ontology Definition Evidence Reference
GO:0000245 Process Spliceosomal complex assembly IBA
GO:0000245 Process Spliceosomal complex assembly IEA
GO:0000375 Process RNA splicing, via transesterification reactions NAS 9585501
GO:0000398 Process MRNA splicing, via spliceosome IC 11991638
GO:0000398 Process MRNA splicing, via spliceosome IDA 11252167
Other IDs Other IDs provides unique identifiers for this gene in OMIM, HGNC, and Ensembl databases.
MIM HGNC e!Ensembl
605590 10768 ENSG00000115524
Protein Protein information from UniProt database.
UniProt ID Unique identifier for the protein in the UniProt database. Click to view detailed protein information.
O75533
Protein name Splicing factor 3B subunit 1 (Pre-mRNA-splicing factor SF3b 155 kDa subunit) (SF3b155) (Spliceosome-associated protein 155) (SAP 155)
Protein function Component of the 17S U2 SnRNP complex of the spliceosome, a large ribonucleoprotein complex that removes introns from transcribed pre-mRNAs (PubMed:12234937, PubMed:27720643, PubMed:32494006, PubMed:34822310). The 17S U2 SnRNP complex (1) direct
PDB 2F9D , 2F9J , 2FHO , 2PEH , 3LQV , 4OZ1 , 5IFE , 5O9Z , 5Z56 , 5Z57 , 5Z58 , 5ZYA , 6AH0 , 6AHD , 6EN4 , 6FF4 , 6FF7 , 6N3E , 6QX9 , 6Y50 , 6Y53 , 6Y5Q , 7ABG , 7ABH , 7ABI , 7B0I , 7B91 , 7B92 , 7B9C , 7DVQ , 7EVN , 7EVO , 7OMF , 7ONB , 7OPI , 7Q3L , 7Q4O , 7Q4P , 7QTT , 7SN6 , 7VPX , 8CH6 , 8H6E , 8H6J , 8H6K , 8H6L , 8HK1 , 8I0P , 8I0R , 8I0S , 8I0T
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF08920 SF3b1 329 452 Splicing factor 3B subunit 1 Domain
Sequence
MAKIAKTHEDIEAQIREIQGKKAALDEAQGVGLDSTGYYDQEIYGGSDSRFAGYVTSIAA
TELEDDDDDYSSSTSLLGQKKPGYHAPVALLNDIPQSTEQYDPFAEHRPPKIADREDEYK
KHRRTMIISPERLDPFADGGKTPDPKMNARTYMDVMREQHLTKEEREIRQQLAEKAKAGE
LKVVNGAAASQPPSKRKRRWDQTADQTPGATPKKLSSWDQAETPGHTPSLRWDETPGRAK
GSETPGATPGSKIWDPTPSHTPAGAATPGRGDTPGHATPGHGGATSSARKNRWDETPKTE
RDTPGHGSGWAETPRTDRGGDSIGETPTPGASKRKSRWDETPASQMGGSTPVLTPGKTPI
GTPAMNMATPTPGHIMSMTPEQLQAWRWEREIDERNRPLSDEELDAMFPEGYKVLPPPAG
YVPIRTPARKLTATPTPLGGMTGFHMQTEDRT
MKSVNDQPSGNLPFLKPDDIQYFDKLLV
DVDESTLSPEEQKERKIMKLLLKIKNGTPPMRKAALRQITDKAREFGAGPLFNQILPLLM
SPTLEDQERHLLVKVIDRILYKLDDLVRPYVHKILVVIEPLLIDEDYYARVEGREIISNL
AKAAGLATMISTMRPDIDNMDEYVRNTTARAFAVVASALGIPSLLPFLKAVCKSKKSWQA
RHTGIKIVQQIAILMGCAILPHLRSLVEIIEHGLVDEQQKVRTISALAIAALAEAATPYG
IESFDSVLKPLWKGIRQHRGKGLAAFLKAIGYLIPLMDAEYANYYTREVMLILIREFQSP
DEEMKKIVLKVVKQCCGTDGVEANYIKTEILPPFFKHFWQHRMALDRRNYRQLVDTTVEL
ANKVGAAEIISRIVDDLKDEAEQYRKMVMETIEKIMGNLGAADIDHKLEEQLIDGILYAF
QEQTTEDSVMLNGFGTVVNALGKRVKPYLPQICGTVLWRLNNKSAKVRQQAADLISRTAV
VMKTCQEEKLMGHLGVVLYEYLGEEYPEVLGSILGALKAIVNVIGMHKMTPPIKDLLPRL
TPILKNRHEKVQENCIDLVGRIADRGAEYVSAREWMRICFELLELLKAHKKAIRRATVNT
FGYIAKAIGPHDVLATLLNNLKVQERQNRVCTTVAIAIVAETCSPFTVLPALMNEYRVPE
LNVQNGVLKSLSFLFEYIGEMGKDYIYAVTPLLEDALMDRDLVHRQTASAVVQHMSLGVY
GFGCEDSLNHLLNYVWPNVFETSPHVIQAVMGALEGLRVAIGPCRMLQYCLQGLFHPARK
VRDVYWKIYNSIYIGSQDALIAHYPRIYNDDKNTYIRYELDYIL
Sequence length 1304
Interactions View interactions
Pathways Pathway information has different metabolic/signaling pathways associated with genes.
  KEGG  Reactome
  Spliceosome   B-WICH complex positively regulates rRNA expression
mRNA Splicing - Major Pathway
mRNA Splicing - Minor Pathway
Associated diseases Disease associations from ClinVar (causal & non-causal) and other databases (OMIM, Orphanet, GWAS, etc.).
35
Evidence Score: ★☆☆☆☆  Gene-disease association found in Text Mining only ★★☆☆☆  Found in Text Mining and Unknown/Other Associations ★★★☆☆  Reported in Unknown/Other Associations across ≥2 Sources ★★★★☆  ClinVar: Pathogenic/Likely Pathogenic (<5 Variants) ★★★★★  ClinVar: Pathogenic/Likely Pathogenic (≥5 Variants)
Causal Diseases associated with Pathogenic or Likely Pathogenic variants in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession Evidence Score
Acute myeloid leukemia Likely pathogenic rs377023736 RCV000420231
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Myelodysplastic syndrome Likely pathogenic; Pathogenic rs377023736 RCV000431140
RCV005252885
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Myelodysplastic syndrome progressed to acute myeloid leukemia Likely pathogenic; Pathogenic rs377023736 RCV000203465
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Unknown / Other Associations ClinVar entries with uncertain/conflicting evidence, and associations from other databases (OMIM, Orphanet, GWAS, etc.) where the gene is not established as causal.
Phenotype Name Clinical Significance Source Evidence Score
Acral lentiginous melanoma - ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
ATRIAL FIBRILLATION GWAS catalog
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
AUTISM SPECTRUM DISORDER GWAS catalog
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
BIPOLAR DISORDER GWAS catalog
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Associations from Text MiningDisease associations identified through Pubtator
Disease Name Relationship Type References Evidence Score
Adenocarcinoma of Lung Associate 33057152
★☆☆☆☆
Found in Text Mining only
Anemia Associate 29433555, 32243522, 34930825
★☆☆☆☆
Found in Text Mining only
Anemia Aplastic Associate 34587721
★☆☆☆☆
Found in Text Mining only
Anemia Hemolytic Associate 26255870
★☆☆☆☆
Found in Text Mining only
Anemia Refractory Associate 22096241, 23070040, 23300182, 24723457, 25428262, 25955609, 25957392, 26874914, 28545085, 29433555
★☆☆☆☆
Found in Text Mining only
Anemia Refractory with Excess of Blasts Associate 22096241
★☆☆☆☆
Found in Text Mining only
Anemia Sideroblastic Associate 34861039, 34930825
★☆☆☆☆
Found in Text Mining only
Anemia Sideroblastic Pyridoxine Refractory Autosomal Recessive Associate 25957392
★☆☆☆☆
Found in Text Mining only
Aneuploidy Associate 37463047
★☆☆☆☆
Found in Text Mining only
Ataxia Telangiectasia Associate 30726782, 32573691
★☆☆☆☆
Found in Text Mining only