3.4.24.B20: FtsH protease
This is an abbreviated version!
For detailed information about FtsH protease, go to the full flat file.
Word Map on EC 3.4.24.B20
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3.4.24.B20
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chloroplast
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photosystem
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thylakoids
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variegation
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photodamaged
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photoinhibition
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sigma32
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ftsh-mediated
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rpoh
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grana
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lpxc
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photoinhibitory
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ftsh-dependent
- 3.4.24.B20
- chloroplast
-
photosystem
- thylakoids
-
variegation
-
photodamaged
-
photoinhibition
- sigma32
-
ftsh-mediated
- rpoh
-
grana
- lpxc
-
photoinhibitory
-
ftsh-dependent
Reaction
degradative cleavage of proteins =
Synonyms
AAA protease, AtFtsH, AtFtsH2, AtFtsH5, AtFtsH6, ATP-dependent zinc metalloprotease, filamentation temperature sensitive H, filamentation temperature sensitive H protease, FtsH, FtsH (slr0228), FtsH metalloprotease, FtsH protease, FtsH protease slr0228, FtsH1, FtsH10, FtsH11, FtsH12, FtsH2, FtsH2 protease, FtsH3, FtsH4, FtsH5, FtsH6, FtsH7, FtsH8, FtsH9, FTSHA, FtsHB, HflB, M41.005, More, putative cell division protein, RISP-degrading activity, slr0228, VAR1, VAR2, zinc dependent protease, ZmFtsH2A, ZmFtsH2B
ECTree
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Localization
Localization on EC 3.4.24.B20 - FtsH protease
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isoforms FtsH 7 and 9 are localized in the chloroplast envelope membrane
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additional information
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FtsH co-purifies with PSII complexes in Synechocystis
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gene var2 expression influences the chloroplast structure
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FtsH comprises 12 members (AtFtsH1-AtFtsH12) including three pairs of closely related genes that are targeted to chloroplasts (AtFtsH2 and AtFtsH8, AtFtsH1 and AtFtsH5, AtFtsH7 and AtFtsH9)
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FtsH is encoded by a family of 12 genes. Four of them, FtsH1, 2, 5, and 8 are found in chloroplast. Mutations in two of these, FTsH2 and 5, demonstrate a visible phenotype of variegated leaves, with the phenotype of the FtsH2 mutant being more pronounced
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FtsH2 and FtsH8, FtsH11 and FtsH5, FtsH7 and FtsH9 are closely related pairs. FtsH2 is the most abundant FtsH protein in chloroplast, followed by FtsH5. FtsH2 mutant has the most severe variegation and sensitivity to photoinhibition. The FtsH5 mutant shows similar, although much less pronounced, defects. FtsH8 and FtsH1 mutants behave like wild type plants. The overexpression of FtsH8 complements the FtsH2 mutant, and overexpression of FtsH1 complements the FtsH5 mutant. Thus, the genes within these closely related pairs are fully redundant
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thylakoid membrane, FtsH2 is the most abundant isomer, followed by FtsH5, FtsH8 and 1. Arabidopsis thalaina contains 12 genes encoding FtsH proteins, nine of them can be targeted to chloroplast, the other three are mitochondrial
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isoforms FtsH1 and FtsH2 are the major isoforms comprising the FtsH complex in tobacco chloroplasts
isoform FtsH1 is found mainly in the cytoplasmic membrane
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hexamers of the FtsH proteases are localized near the Photosystem II complexes at the grana
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hexamers of the FtsH proteases are localized near the Photosystem II complexes at the grana
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hexamers of the FtsH proteases are localized near the Photosystem II complexes at the grana
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the hexameric FtsH protease is anchored to the inner membrane by two transmembrane helices per monomer such that both termini protrude into the cytoplasm
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Arabidopsis thalaina contains 12 genes encoding FtsH proteins, nine of them can be targeted to chloroplast, the other three are mitochondrial
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exclusively, integral membrane protein, the hydrophilic part is exposed to the stroma of the chloroplast
protein is imported into isolated chloroplasts
VAR1 forms complexes with VAR2
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the precursor of FtsH2 requires the proton gradient whereas the precursor of FtsH5 requires NTPs for thylakoid integration
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isoforms FtsH 1, 2, 5 and 8 are localized in the thylakoid membrane
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exclusively, integral membrane protein, the hydrophilic part is exposed to the stroma of the chloroplast
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exclusively, integral membrane protein, the hydrophilic part is exposed to the stroma of the chloroplast
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FtsH is found not only in the stroma thylakoids but also in the Photosystem II-enriched grana membranes (more abundant in the stroma thylakoids than in the grana)
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isoform FtsH protein 2 is found either in the thylakoid or at the interface between the thylakoid and cytoplasmic membranes
isoform FtsH protein 3 is found either in the thylakoid or at the interface between the thylakoid and cytoplasmic membranes
isoform FtsH protein 4is found either in the thylakoid or at the interface between the thylakoid and cytoplasmic membranes