Cloned (Comment) | Organism |
---|---|
expressed in Escherichia coli | Solanum tuberosum |
Solanum tuberosum, subunits I-III | Solanum tuberosum |
General Stability | Organism |
---|---|
Highly salt resistant, optimum at 0.9 M, still active at 1.5 M NaCl | Solanum tuberosum |
Separation of subunit III from cytochrome reductase-processing peptidase complex leads to aggregation of the remaining subcomplex and irreversible loss of processing activity | Solanum tuberosum |
Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|
membrane | - |
Solanum tuberosum | 16020 | - |
mitochondrion | - |
Solanum tuberosum | 5739 | - |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
additional information | no externally added metal ions required | Solanum tuberosum |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
More | - |
the enzymes from Spinacia oleracea or Solanum tuberosum are immunologically not related to MPP but to processing enhancing protein (i.e. PEP) from fungi and mammals | - |
Solanum tuberosum | - |
var. Marfona | - |
Reaction | Comment | Organism | Reaction ID |
---|---|---|---|
Release of N-terminal targetting peptides from precursor proteins imported into the mitochondrion, typically with Arg in position P2 | mechanism | Solanum tuberosum | |
Release of N-terminal targetting peptides from precursor proteins imported into the mitochondrion, typically with Arg in position P2 | structure-function relationship | Solanum tuberosum |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
tuber | - |
Solanum tuberosum | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
F1-ATPase beta-subunit precursor + H2O | F0F1-ATP-synthase F1beta subunit precursor from Nicotiana plumbaginifolia | Solanum tuberosum | F1-ATPase beta-subunit | - |
? | |
F1-ATPase beta-subunit precursor + H2O | no cleavage with isolated enzyme subunits | Solanum tuberosum | F1-ATPase beta-subunit | - |
? | |
additional information | plant enzyme is integral part of bifunctional cytochrome c reductase complex | Solanum tuberosum | ? | - |
? | |
additional information | neither the individual subunits nor their combinations are catalytically active in in vitro processing | Solanum tuberosum | ? | - |
? | |
P53 precursor + H2O | i.e. subunit II of cytochrome c reductase complex, cleavage site: Tyr32-Ser33 | Solanum tuberosum | P53 | - |
? | |
P55 precursor + H2O | i.e. subunit I of cytochrome c reductase complex, cleavage site: Ser32-Ser33 | Solanum tuberosum | P55 | - |
? |
Subunits | Comment | Organism |
---|---|---|
More | sequence homologies between P55, P53 from potato and processing enhancing protein from yeast or Neurospora crassa and between P51 from potato and MPP from yeast or Neurospora crassa | Solanum tuberosum |
More | the mitochondrial processing peptidase components of cytochrome c reductase-processing peptidase complex are the three largest subunits: P55, P53 and P51, with MW 55000, 53000 and 51000, respectively, SDS-PAGE | Solanum tuberosum |