Q3TTA7 (CBLB_MOUSE) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 83.
History...
Names·Attributes·General annotation·Ontologies·Interactions·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Interactions·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: E3 ubiquitin-protein ligase CBL-B EC=6.3.2.- Alternative name(s): Casitas B-lineage lymphoma proto-oncogene b SH3-binding protein CBL-B Signal transduction protein CBL-B | ||
| Gene names |
| ||
| Organism | Mus musculus (Mouse) [Reference proteome] | ||
| Taxonomic identifier | 10090 [NCBI] | ||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Sciurognathi › Muroidea › Muridae › Murinae › Mus › Mus![]() |
Protein attributes
| Sequence length | 982 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | E3 ubiquitin-protein ligase which accepts ubiquitin from specific E2 ubiquitin-conjugating enzymes, and transfers it to substrates, generally promoting their degradation by the proteasome. Negatively regulates TCR (T-cell receptor), BCR (B-cell receptor) and FCER1 (high affinity immunoglobulin epsilon receptor) signal transduction pathways. In naive T-cells, inhibits VAV1 activation upon TCR engagement and imposes a requirement for CD28 costimulation for proliferation and IL-2 production. Also acts by promoting PIK3R1/p85 ubiquitination, which impairs its recruitment to the TCR and subsequent activation. In activated T-cells, inhibits PLCG1 activation and calcium mobilization upon restimulation and promotes anergy. In B-cells, acts by ubiquitinating SYK and promoting its proteasomal degradation. May also be involved in EGFR ubiquitination and internalization. Ref.3 Ref.4 Ref.5 Ref.6 Ref.9 Ref.10 |
| Pathway | |
| Subunit structure | Interacts with SH3 domain-containing proteins FYN, FGR, GRB2, CRKL, PIK3R1 and SH3KBP1/CIN85. Identified in heterotrimeric complexes with SH3KBP1/CIN85, CD2AP and ARHGEF7, where one CBLB peptide binds two copies of the other protein. Interacts with poly-ubiquitinated proteins. Dimerization is required for the binding of poly-ubiquitin, but not for the binding of mono-ubiquitin By similarity. Interacts with SH3 domain-containing proteins VAV1, PLCG1, PIK3R1, LCK, CRK and SORBS1. May interact with CBL. Interacts with LCP2 and ZAP70. Ref.4 Ref.8 |
| Subcellular location | Cytoplasm. Note: In adipocytes, translocates to the plasma membrane upon insulin stimulation. Ref.8 |
| Domain | The N-terminus is composed of the phosphotyrosine binding (PTB) domain, a short linker region and the RING-type zinc finger. The PTB domain, which is also called TKB (tyrosine kinase binding) domain, is composed of three different subdomains: a four-helix bundle (4H), a calcium-binding EF hand and a divergent SH2 domain. The RING-type zinc finger domain mediates binding to an E2 ubiquitin-conjugating enzyme. The UBA domain interacts with poly-ubiquitinated proteins By similarity. |
| Post-translational modification | Phosphorylated on tyrosine and serine residues upon TCR or BCR activation. Phosphorylated on Tyr-664 and Tyr-708 in adipocytes following insulin stimulation. Ref.8 Ref.9 Auto-ubiquitinated upon EGF-mediated cell activation or upon T-cell costimulation by CD28; which promotes proteasomal degradation. |
| Disruption phenotype | Mice are fertile and grossly normal. However, they show a high sensitivity to autoimmune diseases and may develop a spontaneous generalized autoimmune disorder characterized by auto-antibody production, infiltration of activated T- and B-lymphocytes into various organs and parenchymal damage. Ref.5 |
| Miscellaneous | This protein has one functional calcium-binding site By similarity. |
| Sequence similarities | Contains 1 Cbl-PTB (Cbl-type phosphotyrosine-binding) domain. Contains 1 RING-type zinc finger. Contains 1 UBA domain. |
Ontologies
Binary interactions
With | Entry | #Exp. | IntAct | Notes |
|---|---|---|---|---|
| Myd88 | P22366 | 2 | EBI-3649276,EBI-525108 | |
| Ticam1 | Q80UF7 | 2 | EBI-3649276,EBI-3649271 |
Alternative products
| This entry describes 2 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 1 (identifier: Q3TTA7-1) This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry. | ||||||
| Isoform 2 (identifier: Q3TTA7-2) The sequence of this isoform differs from the canonical sequence as follows: 1-152: Missing. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 982 | 982 | E3 ubiquitin-protein ligase CBL-B | PRO_0000055861 | |||||
Regions | |||||||||
| Domain | 35 – 343 | 309 | Cbl-PTB | ||||||
| Domain | 931 – 970 | 40 | UBA | ||||||
| Calcium binding | 219 – 232 | 14 | By similarity | ||||||
| Zinc finger | 373 – 412 | 40 | RING-type | ||||||
| Region | 35 – 167 | 133 | 4H | ||||||
| Region | 168 – 240 | 73 | EF-hand-like | ||||||
| Region | 241 – 343 | 103 | SH2-like | ||||||
| Region | 344 – 372 | 29 | Linker | ||||||
| Region | 543 – 567 | 25 | Interaction with VAV1 By similarity | ||||||
| Region | 891 – 927 | 37 | Interaction with SH3KBP1 By similarity | ||||||
| Compositional bias | 477 – 566 | 90 | Pro-rich | ||||||
| Compositional bias | 672 – 675 | 4 | Poly-Pro | ||||||
| Compositional bias | 775 – 871 | 97 | Pro-rich | ||||||
Sites | |||||||||
| Binding site | 286 | 1 | Phosphotyrosine By similarity | ||||||
Amino acid modifications | |||||||||
| Modified residue | 282 | 1 | Phosphoserine; by PKC/PRKCQ By similarity | ||||||
| Modified residue | 521 | 1 | Phosphoserine By similarity | ||||||
| Modified residue | 525 | 1 | Phosphoserine By similarity | ||||||
| Modified residue | 529 | 1 | Phosphoserine By similarity | ||||||
| Modified residue | 664 | 1 | Phosphotyrosine Ref.8 | ||||||
| Modified residue | 708 | 1 | Phosphotyrosine Ref.8 | ||||||
| Modified residue | 889 | 1 | Phosphotyrosine Ref.11 | ||||||
Natural variations | |||||||||
| Alternative sequence | 1 – 152 | 152 | Missing in isoform 2. | VSP_017222 | |||||
Experimental info | |||||||||
| Sequence conflict | 176 | 1 | A → T in BAE36418. Ref.1 | ||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "The transcriptional landscape of the mammalian genome." Carninci P., Kasukawa T., Katayama S., Gough J., Frith M.C., Maeda N., Oyama R., Ravasi T., Lenhard B., Wells C., Kodzius R., Shimokawa K., Bajic V.B., Brenner S.E., Batalov S., Forrest A.R., Zavolan M., Davis M.J. Hayashizaki Y.Science 309:1559-1563(2005) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORMS 1 AND 2). Strain: C57BL/6J. Tissue: Testis. |
| [2] | "Lineage-specific biology revealed by a finished genome assembly of the mouse." Church D.M., Goodstadt L., Hillier L.W., Zody M.C., Goldstein S., She X., Bult C.J., Agarwala R., Cherry J.L., DiCuccio M., Hlavina W., Kapustin Y., Meric P., Maglott D., Birtle Z., Marques A.C., Graves T., Zhou S. Ponting C.P.PLoS Biol. 7:E1000112-E1000112(2009) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: C57BL/6J. |
| [3] | "Cbl-b is a negative regulator of receptor clustering and raft aggregation in T cells." Krawczyk C., Bachmaier K., Sasaki T., Jones R.G., Snapper S.B., Bouchard D., Kozieradzki I., Ohashi P.S., Alt F.W., Penninger J.M. Immunity 13:463-473(2000) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION. |
| [4] | "Negative regulation of lymphocyte activation and autoimmunity by the molecular adaptor Cbl-b." Bachmaier K., Krawczyk C., Kozieradzki I., Kong Y.-Y., Sasaki T., Oliveira-dos-Santos A., Mariathasan S., Bouchard D., Wakeham A., Itie A., Le J., Ohashi P.S., Sarosi I., Nishina H., Lipkowitz S., Penninger J.M. Nature 403:211-216(2000) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, INTERACTION WITH PIK3R1; LCP2; ZAP70; LCK; PLCG1 AND VAV1. |
| [5] | "Cbl-b regulates the CD28 dependence of T-cell activation." Chiang Y.J., Kole H.K., Brown K., Naramura M., Fukuhara S., Hu R.-J., Jang I.K., Gutkind J.S., Shevach E., Gu H. Nature 403:216-220(2000) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, DISRUPTION PHENOTYPE. |
| [6] | "Proteolysis-independent regulation of PI3K by Cbl-b-mediated ubiquitination in T cells." Fang D., Liu Y.-C. Nat. Immunol. 2:870-875(2001) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION. |
| [7] | "Regulation of T cell activation threshold by CD28 costimulation through targeting Cbl-b for ubiquitination." Zhang J., Bardos T., Li D., Gal I., Vermes C., Xu J., Mikecz K., Finnegan A., Lipkowitz S., Glant T.T. J. Immunol. 169:2236-2240(2002) [PubMed] [Europe PMC] [Abstract] Cited for: UBIQUITINATION. |
| [8] | "The roles of Cbl-b and c-Cbl in insulin-stimulated glucose transport." Liu J., DeYoung S.M., Hwang J.B., O'Leary E.E., Saltiel A.R. J. Biol. Chem. 278:36754-36762(2003) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION AT TYR-664 AND TYR-708, INTERACTION WITH CBL; CRK AND SORBS1, SUBCELLULAR LOCATION. |
| [9] | "Cbl-b negatively regulates B cell antigen receptor signaling in mature B cells through ubiquitination of the tyrosine kinase Syk." Sohn H.W., Gu H., Pierce S.K. J. Exp. Med. 197:1511-1524(2003) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION, FUNCTION. |
| [10] | "Essential role of the E3 ubiquitin ligase Cbl-b in T cell anergy induction." Jeon M.-S., Atfield A., Venuprasad K., Krawczyk C., Sarao R., Elly C., Yang C., Arya S., Bachmaier K., Su L., Bouchard D., Jones R., Gronski M., Ohashi P., Wada T., Bloom D., Fathman C.G., Liu Y.-C., Penninger J.M. Immunity 21:167-177(2004) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION. |
| [11] | "Immunoaffinity profiling of tyrosine phosphorylation in cancer cells." Rush J., Moritz A., Lee K.A., Guo A., Goss V.L., Spek E.J., Zhang H., Zha X.-M., Polakiewicz R.D., Comb M.J. Nat. Biotechnol. 23:94-101(2005) [PubMed] [Europe PMC] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT TYR-889, MASS SPECTROMETRY. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | AK147367 mRNA. No translation available. AK161486 mRNA. Translation: BAE36418.1. AC117780 Genomic DNA. No translation available. AC154251 Genomic DNA. No translation available. AC154478 Genomic DNA. No translation available. |
| IPI | IPI00266006. IPI00660894. |
| RefSeq | NP_001028410.1. NM_001033238.1. |
| UniGene | Mm.328206. |
3D structure databases | |
| ProteinModelPortal | Q3TTA7. |
| SMR | Q3TTA7. Positions 42-427, 929-972. |
| ModBase | Search... |
Protein-protein interaction databases | |
| IntAct | Q3TTA7. 2 interactions. |
| STRING | 10090.ENSMUSP00000023313. |
PTM databases | |
| PhosphoSite | Q3TTA7. |
Proteomic databases | |
| PaxDb | Q3TTA7. |
| PRIDE | Q3TTA7. |
Protocols and materials databases | |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| GeneID | 208650. |
| KEGG | mmu:208650. |
| UCSC | uc007zlf.1. mouse. |
Organism-specific databases | |
| CTD | 868. |
| MGI | MGI:2146430. Cblb. |
Phylogenomic databases | |
| eggNOG | NOG242251. |
| HOGENOM | HOG000294176. |
| HOVERGEN | HBG005255. |
| InParanoid | Q3TTA7. |
| KO | K04707. |
| OrthoDB | EOG4PG60J. |
Enzyme and pathway databases | |
| UniPathway | UPA00143. |
Gene expression databases | |
| CleanEx | MM_CBLB. |
| Genevestigator | Q3TTA7. |
| GermOnline | ENSMUSG00000022637. Mus musculus. |
Family and domain databases | |
| Gene3D | 1.10.238.10. 1 hit. 1.20.930.20. 1 hit. 3.30.40.10. 1 hit. 3.30.505.10. 1 hit. |
| InterPro | IPR024162. Adaptor_Cbl. IPR014741. Adaptor_Cbl_EF_hand-like. IPR003153. Adaptor_Cbl_N_hlx. IPR014742. Adaptor_Cbl_SH2-like. IPR024159. Cbl_PTB. IPR011992. EF-hand-like_dom. IPR000980. SH2. IPR000449. UBA/transl_elong_EF1B_N. IPR015940. UBA/transl_elong_EF1B_N_euk. IPR001841. Znf_RING. IPR013083. Znf_RING/FYVE/PHD. IPR017907. Znf_RING_CS. [Graphical view] |
| PANTHER | PTHR23007. PTHR23007. 1 hit. |
| Pfam | PF02262. Cbl_N. 1 hit. PF02761. Cbl_N2. 1 hit. PF02762. Cbl_N3. 1 hit. PF00627. UBA. 1 hit. [Graphical view] |
| SMART | SM00184. RING. 1 hit. SM00252. SH2. 1 hit. SM00165. UBA. 1 hit. [Graphical view] |
| SUPFAM | SSF47668. Adaptor_Cbl_N. 1 hit. |
| PROSITE | PS51506. CBL_PTB. 1 hit. PS50030. UBA. 1 hit. PS00518. ZF_RING_1. 1 hit. PS50089. ZF_RING_2. 1 hit. [Graphical view] |
| ProtoNet | Search... |
Other | |
| NextBio | 372367. |
| SOURCE | Search... |
Entry information
| Entry name | CBLB_MOUSE | ||||||||
| Accession | Primary (citable) accession number: Q3TTA7 Secondary accession number(s): E9QMY2 | ||||||||
| Entry history |
| ||||||||
| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Chordata Protein Annotation Program | ||||||||
Relevant documents
| MGD cross-references Mouse Genome Database (MGD) cross-references in UniProtKB/Swiss-Prot |
| PATHWAY comments Index of metabolic and biosynthesis pathways |
| SIMILARITY comments Index of protein domains and families |

Clusters with
