NCBI Accession #
NP_176228.3
NCBI GenBank Nucleotide #
NM_104712.5
NCBI Official Full Name
UB-like protease 1D
NCBI Official Symbol
ULP1D
NCBI Official Synonym Symbols
OTS1; OVERLY TOLERANT TO SALT 1; T13D8.11; T13D8_11; UB-like protease 1D
NCBI Protein Information
UB-like protease 1D
NCBI Summary
Encodes a deSUMOylating enzyme. In vitro it has both peptidase activity and isopeptidase activity: it can cleave C-terminal residues from SUMO to activate it for attachment to a target protein and it can also act on the isopeptide bond between SUMO and another protein. sGFP:OTS1 protein accumulates in the nucleus. Double mutant analysis with ULP1C/OTS2 indicates that these genes are involved in salt stress responses and flowering time regulation. Over-expression of 35S:OTS1 increases salt tolerance and reduces the level of SUMO-conjugated proteins. OTS1 transcript levels do not appear to change in response to salt, but, salt stress reduces the level of OTS1 protein in a proteasome-dependent manner.
UniProt Synonym Gene Names
OTS1
UniProt Protein Name
Ubiquitin-like-specific protease 1D
UniProt Synonym Protein Names
Protein OVERLY TOLERANT TO SALT 1
UniProt Primary Accession #
Q2PS26
UniProt Secondary Accession #
O80745
UniProt Related Accession #
Q2PS26
UniProt Comments
Protease that catalyzes two essential functions in the SUMO pathway: processing of full-length SUMOs to their mature forms and deconjugation of SUMO from targeted proteins. Cleaves precursors of SUM1 and SUM2, but not of SUM3 or SUM5. Able to release SUM1 and SUM2 from conjugates, but unable to cleave SUM3. Protease activity mainly directed at deconjugating SUM1 and SUM2 from their target proteins. Regulates salt stress responses and flowering time. Redundant with ULP1C.