| Tissue Specificity | Broadly expressed. |
| Post Translational Modifications | Polymeric chains can be formed through Lys-11 cross-linking. Polymeric SUMO2 chains undergo 'Lys-6'-, 'Lys-11'-, 'Lys-48'- and 'Lys-63'-linked polyubiquitination by RNF4. Cleavage of precursor form by SENP1 or SENP2 is necessary for function. Monoubiquitinated N-terminally by UBE2W, which primes it for RNF4-dependent polyubiquitination by the UBE2V1-UBE2N heterodimer. |
| Function | Ubiquitin-like protein that can be covalently attached to proteins as a monomer or as a lysine-linked polymer. Covalent attachment via an isopeptide bond to its substrates requires prior activation by the E1 complex SAE1-SAE2 and linkage to the E2 enzyme UBE2I, and can be promoted by an E3 ligase such as PIAS1-4, RANBP2, CBX4 or ZNF451. This post-translational modification on lysine residues of proteins plays a crucial role in a number of cellular processes such as nuclear transport, DNA replication and repair, mitosis and signal transduction. Polymeric SUMO2 chains are also susceptible to polyubiquitination which functions as a signal for proteasomal degradation of modified proteins. Plays a role in the regulation of sumoylation status of SETX. |
| Protein Name | Small Ubiquitin-Related Modifier 2Sumo-2Hsmt3Smt3 Homolog 2Sumo-3Sentrin-2Ubiquitin-Like Protein Smt3bSmt3b |
| Database Links | Reactome: R-HSA-196791Reactome: R-HSA-3065676Reactome: R-HSA-3065678Reactome: R-HSA-3065679Reactome: R-HSA-3108214Reactome: R-HSA-3232118Reactome: R-HSA-3899300Reactome: R-HSA-4085377Reactome: R-HSA-4090294Reactome: R-HSA-4551638Reactome: R-HSA-4570464Reactome: R-HSA-4615885Reactome: R-HSA-5693607Reactome: R-HSA-5696395Reactome: R-HSA-9843940 |
| Cellular Localisation | NucleusPml Body |
| Alternative Protein Names | Small Ubiquitin-Related Modifier 2 proteinSumo-2 proteinHsmt3 proteinSmt3 Homolog 2 proteinSumo-3 proteinSentrin-2 proteinUbiquitin-Like Protein Smt3b proteinSmt3b proteinSUMO2 proteinSMT3B proteinSMT3H2 protein |
Information sourced from Uniprot.org
