UniProtKB - Q9DB52 (PBIR1_MOUSE)
Protein
P2R1A-PPP2R2A-interacting phosphatase regulator 1
Gene
Pabir1
Organism
Mus musculus (Mouse)
Status
Functioni
Acts as an inhibitor of serine/threonine-protein phosphatase 2A (PP2A) activity. Potentiates ubiquitin-mediated proteasomal degradation of serine/threonine-protein phosphatase 2A catalytic subunit alpha (PPP2CA) (By similarity). Inhibits PP2A-mediated dephosphorylation of WEE1, promoting ubiquitin-mediated proteolysis of WEE1, thereby releasing G2/M checkpoint (By similarity).By similarity
GO - Molecular functioni
- protein serine/threonine phosphatase inhibitor activity Source: UniProtKB
GO - Biological processi
- mitotic G2/M transition checkpoint Source: UniProtKB
- positive regulation of cell growth Source: UniProtKB
- positive regulation of proteasomal ubiquitin-dependent protein catabolic process Source: UniProtKB
Keywordsi
Molecular function | Protein phosphatase inhibitor |
Names & Taxonomyi
Protein namesi | Recommended name: P2R1A-PPP2R2A-interacting phosphatase regulator 1By similarityAlternative name(s): PABIR family member 1By similarity |
Gene namesi | Name:Pabir1By similarity Synonyms:Fam122aImported |
Organismi | Mus musculus (Mouse) |
Taxonomic identifieri | 10090 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Myomorpha › Muroidea › Muridae › Murinae › Mus › Mus |
Proteomesi |
|
Organism-specific databases
MGIi | MGI:1915284, Fam122a |
PTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000089690 | 1 – 284 | P2R1A-PPP2R2A-interacting phosphatase regulator 1Add BLAST | 284 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Modified residuei | 32 | PhosphoserineBy similarity | 1 | |
Modified residuei | 34 | Phosphoserine; by CHEK1By similarity | 1 | |
Modified residuei | 42 | PhosphoserineBy similarity | 1 | |
Modified residuei | 45 | PhosphoserineCombined sources | 1 | |
Modified residuei | 59 | PhosphoserineCombined sources | 1 | |
Modified residuei | 73 | PhosphoserineCombined sources | 1 | |
Cross-linki | 86 | Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in SUMO1)By similarity | ||
Modified residuei | 140 | PhosphoserineCombined sources | 1 | |
Modified residuei | 144 | PhosphoserineCombined sources | 1 | |
Modified residuei | 146 | PhosphothreonineBy similarity | 1 | |
Modified residuei | 184 | PhosphoserineBy similarity | 1 | |
Modified residuei | 186 | PhosphoserineBy similarity | 1 | |
Modified residuei | 264 | PhosphoserineCombined sources | 1 | |
Modified residuei | 267 | PhosphoserineCombined sources | 1 | |
Modified residuei | 273 | PhosphoserineCombined sources | 1 |
Post-translational modificationi
CHEK1-mediated phosphorylation at Ser-34 negatively regulates its ability to inhibit serine/threonine-protein phosphatase 2A (PP2A) activity. Phosphorylation leads to its release from the PP2A complex and its sequestration by 14-3-3 proteins in the cytoplasm resulting in its inability to translocate to the nucleus, where it otherwise inhibits PP2A.By similarity
Keywords - PTMi
Isopeptide bond, Phosphoprotein, Ubl conjugationProteomic databases
EPDi | Q9DB52 |
jPOSTi | Q9DB52 |
MaxQBi | Q9DB52 |
PaxDbi | Q9DB52 |
PeptideAtlasi | Q9DB52 |
PRIDEi | Q9DB52 |
ProteomicsDBi | 271511 |
PTM databases
iPTMneti | Q9DB52 |
PhosphoSitePlusi | Q9DB52 |
Expressioni
Gene expression databases
Bgeei | ENSMUSG00000074922, Expressed in secondary oocyte and 288 other tissues |
Genevisiblei | Q9DB52, MM |
Interactioni
Subunit structurei
Interacts with PPP2CA, PPP2R2A and PPP2R1A (By similarity). The CHEK1-mediated Ser-34 phosphorylated form interacts with 14-3-3 proteins (By similarity).
By similarityProtein-protein interaction databases
STRINGi | 10090.ENSMUSP00000097152 |
Miscellaneous databases
RNActi | Q9DB52, protein |
Family & Domainsi
Compositional bias
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Compositional biasi | 21 – 28 | Poly-Gly | 8 |
Sequence similaritiesi
Belongs to the FAM122 family.Curated
Phylogenomic databases
eggNOGi | ENOG502QTCH, Eukaryota |
GeneTreei | ENSGT00390000015476 |
HOGENOMi | CLU_083344_0_0_1 |
InParanoidi | Q9DB52 |
OMAi | GVMPQEK |
OrthoDBi | 1406067at2759 |
PhylomeDBi | Q9DB52 |
TreeFami | TF330808 |
Family and domain databases
InterProi | View protein in InterPro IPR026716, FAM122 |
PANTHERi | PTHR22227, PTHR22227, 1 hit |
i Sequence
Sequence statusi: Complete.
Q9DB52-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MAQEKMELDL ELPAGASPAE GGGPGGGGLR RSNSAPLIHG LSDSSPVFQA
60 70 80 90 100
EAPSARRNST TFPSRHGLLL PASPVRMHSS RLHQIKQEEG MDLINRETVH
110 120 130 140 150
EREVQTAMQI SHSWEESFSL SDNDVEKSAS PKRIDFIPVS PAPSPTRGIG
160 170 180 190 200
KQCFSPSLQS FVSSNGLPPS PIPSPTTRFT TRRSQSPINC IRPSVLGPLK
210 220 230 240 250
RKCEMETDYQ PKRFFQGITN MLSSDVAQLS DPGVCVSSDT LDGNSSSAGS
260 270 280
SCNSPAKVST TTDSPVSPAQ AASPFIPVDE LSSK
Experimental Info
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Sequence conflicti | 18 – 20 | PAE → RRR in BAB27811 (PubMed:16141072).Curated | 3 | |
Sequence conflicti | 37 | L → P in BAB27811 (PubMed:16141072).Curated | 1 |
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AK005219 mRNA Translation: BAB23889.1 AK011741 mRNA Translation: BAB27811.1 AK033646 mRNA Translation: BAC28405.1 AK077654 mRNA Translation: BAC36930.1 AK172089 mRNA Translation: BAE42820.1 BC028637 mRNA Translation: AAH28637.1 BC083062 mRNA Translation: AAH83062.1 |
CCDSi | CCDS29712.1 |
RefSeqi | NP_080796.1, NM_026520.3 |
Genome annotation databases
Ensembli | ENSMUST00000099556; ENSMUSP00000097152; ENSMUSG00000074922 |
GeneIDi | 68034 |
KEGGi | mmu:68034 |
UCSCi | uc008haq.1, mouse |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AK005219 mRNA Translation: BAB23889.1 AK011741 mRNA Translation: BAB27811.1 AK033646 mRNA Translation: BAC28405.1 AK077654 mRNA Translation: BAC36930.1 AK172089 mRNA Translation: BAE42820.1 BC028637 mRNA Translation: AAH28637.1 BC083062 mRNA Translation: AAH83062.1 |
CCDSi | CCDS29712.1 |
RefSeqi | NP_080796.1, NM_026520.3 |
3D structure databases
ModBasei | Search... |
SWISS-MODEL-Workspacei | Submit a new modelling project... |
Protein-protein interaction databases
STRINGi | 10090.ENSMUSP00000097152 |
PTM databases
iPTMneti | Q9DB52 |
PhosphoSitePlusi | Q9DB52 |
Proteomic databases
EPDi | Q9DB52 |
jPOSTi | Q9DB52 |
MaxQBi | Q9DB52 |
PaxDbi | Q9DB52 |
PeptideAtlasi | Q9DB52 |
PRIDEi | Q9DB52 |
ProteomicsDBi | 271511 |
Protocols and materials databases
Antibodypediai | 26789, 51 antibodies |
Genome annotation databases
Ensembli | ENSMUST00000099556; ENSMUSP00000097152; ENSMUSG00000074922 |
GeneIDi | 68034 |
KEGGi | mmu:68034 |
UCSCi | uc008haq.1, mouse |
Organism-specific databases
CTDi | 68034 |
MGIi | MGI:1915284, Fam122a |
Phylogenomic databases
eggNOGi | ENOG502QTCH, Eukaryota |
GeneTreei | ENSGT00390000015476 |
HOGENOMi | CLU_083344_0_0_1 |
InParanoidi | Q9DB52 |
OMAi | GVMPQEK |
OrthoDBi | 1406067at2759 |
PhylomeDBi | Q9DB52 |
TreeFami | TF330808 |
Miscellaneous databases
BioGRID-ORCSi | 68034, 9 hits in 53 CRISPR screens |
PROi | PR:Q9DB52 |
RNActi | Q9DB52, protein |
SOURCEi | Search... |
Gene expression databases
Bgeei | ENSMUSG00000074922, Expressed in secondary oocyte and 288 other tissues |
Genevisiblei | Q9DB52, MM |
Family and domain databases
InterProi | View protein in InterPro IPR026716, FAM122 |
PANTHERi | PTHR22227, PTHR22227, 1 hit |
ProtoNeti | Search... |
MobiDBi | Search... |
Entry informationi
Entry namei | PBIR1_MOUSE | |
Accessioni | Q9DB52Primary (citable) accession number: Q9DB52 Secondary accession number(s): Q3TA50, Q9D078 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | July 5, 2005 |
Last sequence update: | June 1, 2001 | |
Last modified: | April 7, 2021 | |
This is version 115 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Chordata Protein Annotation Program |
Miscellaneousi
Keywords - Technical termi
Reference proteomeDocuments
- MGD cross-references
Mouse Genome Database (MGD) cross-references in UniProtKB/Swiss-Prot - SIMILARITY comments
Index of protein domains and families