Splicing factor 3B subunit 3

A splicing factor 3B subunit 3 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q15393]

Synonyms

Pre-mRNA-splicing factor SF3b 130 kDa subunit;
SF3b130;
STAF130;
Spliceosome-associated protein 130;
SAP 130

Research

Bioassay Publications (1)

Timeframe	Studies on this Protein(%)	All Drugs %
pre-1990	0 (0.00)	18.7374
1990's	0 (0.00)	18.2507
2000's	1 (100.00)	29.6817
2010's	0 (0.00)	24.3611
2020's	0 (0.00)	2.80

Compounds (4)

Drugs with Inhibition Measurements

Drug	Taxonomy	Measurement	Average (mM)	Bioassay(s)	Publication(s)
trichostatin a	Homo sapiens (human)	IC50	0.5944	2	2
tacrolimus	Homo sapiens (human)	IC50	0.0124	2	2
lactacystin	Homo sapiens (human)	IC50	6.7405	2	2

Drugs with Activation Measurements

Drug	Taxonomy	Measurement	Average (mM)	Bioassay(s)	Publication(s)
e 7107	Homo sapiens (human)	EC50	0.0034	2	2

Enables

This protein enables 3 target(s):

Target	Category	Definition
protein binding	molecular function	Binding to a protein. [GOC:go_curators]
protein-containing complex binding	molecular function	Binding to a macromolecular complex. [GOC:jl]
U2 snRNA binding	molecular function	Binding to a U2 small nuclear RNA (U2 snRNA). [GOC:jl]

Located In

This protein is located in 3 target(s):

Target	Category	Definition
nucleus	cellular component	A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent. [GOC:go_curators]
nucleoplasm	cellular component	That part of the nuclear content other than the chromosomes or the nucleolus. [GOC:ma, ISBN:0124325653]
nucleolus	cellular component	A small, dense body one or more of which are present in the nucleus of eukaryotic cells. It is rich in RNA and protein, is not bounded by a limiting membrane, and is not seen during mitosis. Its prime function is the transcription of the nucleolar DNA into 45S ribosomal-precursor RNA, the processing of this RNA into 5.8S, 18S, and 28S components of ribosomal RNA, and the association of these components with 5S RNA and proteins synthesized outside the nucleolus. This association results in the formation of ribonucleoprotein precursors; these pass into the cytoplasm and mature into the 40S and 60S subunits of the ribosome. [ISBN:0198506732]

Active In

This protein is active in 1 target(s):

Target	Category	Definition
nucleus	cellular component	A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent. [GOC:go_curators]

Part Of

This protein is part of 7 target(s):

Target	Category	Definition
SAGA complex	cellular component	A SAGA-type histone acetyltransferase complex that deubiquitinates H2A and/or H2B. This complex is organized into several functional submodules: a structural core including the activator binding module and consisting of ADA1 or a homolog, members of the SPT and TAF protein families as well as promotor recruitment factor TRRAP/TRA1, a histone acetyltransferase (HAT) module consisting of GCN5/KAT2A or PCAF/KAT2B, ADA2, ADA3/NGG1, and SGF29 or homologues thereof, a histone deubiquitinase (DUB) module consisting of ATXN7/SGF73, ATXN7L3/SGF11, ENY2/SUS1 and USP22/UBP8 or homologues thereof, and in some taxa a splicing module consisting of SF3B3 and SF3B5 or homologues thereof (not in fungi). In budding yeast also contains Spt8 which distinguishes it from SAGA-like (SLIK) complex (GO:0046695). [PMID:10637607, PMID:17337012, PMID:19056896, PMID:20838651, PMID:33004486]
spliceosomal complex	cellular component	Any of a series of ribonucleoprotein complexes that contain snRNA(s) and small nuclear ribonucleoproteins (snRNPs), and are formed sequentially during the spliceosomal splicing of one or more substrate RNAs, and which also contain the RNA substrate(s) from the initial target RNAs of splicing, the splicing intermediate RNA(s), to the final RNA products. During cis-splicing, the initial target RNA is a single, contiguous RNA transcript, whether mRNA, snoRNA, etc., and the released products are a spliced RNA and an excised intron, generally as a lariat structure. During trans-splicing, there are two initial substrate RNAs, the spliced leader RNA and a pre-mRNA. [GOC:editors, GOC:mah, ISBN:0198547684, PMID:19239890]
U2-type spliceosomal complex	cellular component	Any spliceosomal complex that forms during the splicing of a messenger RNA primary transcript to excise an intron that has canonical consensus sequences near the 5' and 3' ends. [GOC:krc, GOC:mah, PMID:11343900]
U2 snRNP	cellular component	A ribonucleoprotein complex that contains small nuclear RNA U2, a heptameric ring of Sm proteins, as well as several proteins that are unique to the U2 snRNP, most of which remain associated with the U2 snRNA both while the U2 snRNP is free or assembled into a series of spliceosomal complexes. [GOC:krc, GOC:mah, ISBN:0879695897]
U12-type spliceosomal complex	cellular component	Any spliceosomal complex that forms during the splicing of a messenger RNA primary transcript to excise an intron; the series of U12-type spliceosomal complexes is involved in the splicing of the majority of introns that contain atypical AT-AC terminal dinucleotides, as well as other non-canonical introns. The entire splice site signal, not just the terminal dinucleotides, is involved in determining which spliceosome utilizes the site. [GOC:krc, GOC:mah, PMID:11574683, PMID:11971955]
U2-type precatalytic spliceosome	cellular component	A spliceosomal complex that is formed by the recruitment of the preassembled U4/U6.U5 tri-snRNP to the prespliceosome. Although all 5 snRNPs are present, the precatalytic spliceosome is catalytically inactive. The precatalytic spliceosome includes many proteins in addition to those found in the U1, U2 and U4/U6.U5 snRNPs. [GOC:ab, GOC:krc, GOC:mah, PMID:18322460, PMID:19239890]
catalytic step 2 spliceosome	cellular component	A spliceosomal complex that contains three snRNPs, including U5, bound to a splicing intermediate in which the first catalytic cleavage of the 5' splice site has occurred. The precise subunit composition differs significantly from that of the catalytic step 1, or activated, spliceosome, and includes many proteins in addition to those found in the associated snRNPs. [GOC:ab, GOC:krc, GOC:mah, ISBN:0879695897, ISBN:0879697393, PMID:18322460, PMID:19239890]

Involved In

This protein is involved in 8 target(s):

Target	Category	Definition
RNA splicing, via transesterification reactions	biological process	Splicing of RNA via a series of two transesterification reactions. [GOC:krc]
mRNA splicing, via spliceosome	biological process	The joining together of exons from one or more primary transcripts of messenger RNA (mRNA) and the excision of intron sequences, via a spliceosomal mechanism, so that mRNA consisting only of the joined exons is produced. [GOC:krc, ISBN:0198506732, ISBN:0879695897]
regulation of DNA repair	biological process	Any process that modulates the frequency, rate or extent of DNA repair. [GOC:go_curators]
RNA splicing	biological process	The process of removing sections of the primary RNA transcript to remove sequences not present in the mature form of the RNA and joining the remaining sections to form the mature form of the RNA. [GOC:krc, GOC:mah]
negative regulation of protein catabolic process	biological process	Any process that stops, prevents or reduces the frequency, rate or extent of protein catabolic process. [GO_REF:0000058, GOC:kmv, GOC:obol, GOC:TermGenie, PMID:24785082]
regulation of RNA splicing	biological process	Any process that modulates the frequency, rate or extent of RNA splicing, the process of removing sections of the primary RNA transcript to remove sequences not present in the mature form of the RNA and joining the remaining sections to form the mature form of the RNA. [GOC:jl]
positive regulation of DNA-templated transcription	biological process	Any process that activates or increases the frequency, rate or extent of cellular DNA-templated transcription. [GOC:go_curators, GOC:txnOH]
U2-type prespliceosome assembly	biological process	The aggregation, arrangement and bonding together of a set of components to form an U2-type prespliceosome. [GO_REF:0000079, GOC:TermGenie, PMID:12374752]