3.4.22.B67: Ulp2 peptidase
This is an abbreviated version!
For detailed information about Ulp2 peptidase, go to the full flat file.
Word Map on EC 3.4.22.B67
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3.4.22.B67
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sumoylation
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checkpoint
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deconjugation
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sumo-1
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sumo-protein
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helicase
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sumo-specific
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hydroxyurea
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restart
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nuclear-localization
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poly-sumo
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dna-damaging
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nucleolar
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ubiquitin-related
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spindle
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euploidy
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polysumoylation
- 3.4.22.B67
-
sumoylation
-
checkpoint
-
deconjugation
- sumo-1
-
sumo-protein
- helicase
-
sumo-specific
- hydroxyurea
-
restart
-
nuclear-localization
-
poly-sumo
-
dna-damaging
-
nucleolar
-
ubiquitin-related
-
spindle
-
euploidy
-
polysumoylation
Reaction
Ulp2 hydrolyses the SUMO-SUMO linkage in poly-SUMO chains. It catalyzes desumoylation of SUMO-modified-Ndc10 kinetochore protein, SUMO-modified-Bir1 kinetochore protein or SUMO-modified-Cep3 kinetochore protein. =
Synonyms
At1g09730, at4g33620, probable ubiquitin-like-specific protease 2A, probable ubiquitin-like-specific protease 2B, Smt3-specific protease, SMT4, Spf1, SPF2, SUMO de-conjugating/chain-editing enzyme Ulp2p, SUMO isopeptidase Ulp2, SUMO protease, SUMO(Smt3)-specific protease, SUMO-specific protease, Ulp2, ULP2 SUMO isopeptidase, Ulp2 SUMO protease, Ulp2A, Ulp2B, Ulp2p
ECTree
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Natural Substrates Products
Natural Substrates Products on EC 3.4.22.B67 - Ulp2 peptidase
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REACTION DIAGRAM
polySUMO-protein conjugate + H2O
SUMO + SUMO-SUMO + SUMO-SUMO-SUMO + truncated polySUMO-protein conjugate
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polySUMO-protein conjugate + H2O
SUMO + truncated polySUMO-protein conjugate + H2O
Ulp2 can cleave the SUMO-SUMO linkage in poly-SUMO chains
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Smt3-modified protein conjugate + H2O
Smt3 + protein
Ulp2 is able to cleave isopeptide-linked Smt3 molecules from natural substrates. Smt3-protein deconjugation by Ulp2 is important for normal meiotic development
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Smt3-precursor + H2O
SMT3 + peptide
Ulp2 is able to process the Smt3 precursor in vivo, albeit inefficiently relative to Ulp1
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Ulp2 is required for cell division following termination of the DNA damage checkpoint in Sacharomyces cerevisiae. The DNA damage checkpoint is a crucial defense mechanism used by cells to withstand DNA damage. Activation of the checkpoint halts the cell cycle at metaphase and allows time for DNA repair prior to cell division
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additional information
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Ulp2 SUMO protease is required for proper spindle dynamics during cell cycle resumption following a DNA damage-induced cell cycle arrest. It is proposed that one or more proteins is sumoylated following DNA damage-induced checkpoint activation, and this substrate(s) must be desumoylated by Ulp2 for proper cell cycle resumption
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additional information
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Ulp2 SUMO protease is required for proper spindle dynamics during cell cycle resumption following a DNA damage-induced cell cycle arrest. It is proposed that one or more proteins is sumoylated following DNA damage-induced checkpoint activation, and this substrate(s) must be desumoylated by Ulp2 for proper cell cycle resumption
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