3.4.21.116: SpoIVB peptidase
This is an abbreviated version!
For detailed information about SpoIVB peptidase, go to the full flat file.
Word Map on EC 3.4.21.116
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3.4.21.116
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forespore
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pro-sigmak
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sigmak
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checkpoint
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bofa
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spoivfa
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metalloprotease
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intercompartmental
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ctpb
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membrane-embedded
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intramembrane
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cell-cell
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engulfment
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autoproteolysis
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zymogen
- 3.4.21.116
- forespore
- pro-sigmak
- sigmak
-
checkpoint
- bofa
- spoivfa
- metalloprotease
-
intercompartmental
- ctpb
-
membrane-embedded
-
intramembrane
-
cell-cell
-
engulfment
-
autoproteolysis
- zymogen
Reaction
N-terminal cleavage of the pro-form of the sporulation protein sigmaK =
Synonyms
M50.002, S55.001, SpoIVB, SpoIVB serine peptidase, SpolVFB, sporulation protein SpolVFB, stage IV sporulation protein FB
ECTree
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Posttranslational Modification
Posttranslational Modification on EC 3.4.21.116 - SpoIVB peptidase
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proteolytic modification
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enzyme is able to self-cleave in trans into at least three discrete products, zymogen is subject to two levels of proteolysis: autoproteolysis generating intermediate products of 42000 Da, 43000 Da and 45000 Da, at least one of which is proposed to be the active form, followed by processing by one or more enzymes to smaller species of 42000 Da and 40000 Da
proteolytic modification
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autoproteolytical activation. PDZ domain of enzyme binds to enzyme N-terminus to maintain its zymogen form. Following secretion across a spore membrane, domain binds in trans to the C-terminus of another enzyme molecule thus facilitating first cleavage event of enzyme near the N-terminus which releases the enzyme from the forespore membrane