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Literature summary for 3.4.24.B17 extracted from

  • Shotland, Y.; Teff, D.; Koby, S.; Kobiler, O.; Oppenheim, A.B.
    Characterization of a conserved alpha-helical, coiled-coil motif at the C-terminal domain of the ATP-dependent FtsH (HflB) protease of Escherichia coli (2000), J. Mol. Biol., 299, 953-964.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
expression of GST-wild-type enzyme fusion protein, expression of coiled-coil structure mutant enzymes, expression of coiled-coil C-terminus, residues 541-585, as His-tagged peptide Escherichia coli

Protein Variants

Protein Variants Comment Organism
L567R site-directed mutagenesis, mutation in the C-terminal coiled-coil structure, mutant is defective in binding and degradation of sigma32 protein and phage lambda CII protein, no growth of phage lambda Escherichia coli
L574A site-directed mutagenesis, mutation in the C-terminal coiled-coil structure, mutant is defective in binding and degradation of sigma32 protein and phage lambda CII protein, no growth of phage lambda Escherichia coli
L574R site-directed mutagenesis, mutation in the C-terminal coiled-coil structure, mutant is defective in binding and degradation of sigma32 protein and phage lambda CII protein, no growth of phage lambda Escherichia coli
L581R site-directed mutagenesis, mutation in the C-terminal coiled-coil structure, mutant is defective in binding and degradation of sigma32 protein and phage lambda CII protein, no growth of phage lambda Escherichia coli
additional information several mutant strains harboring mutations in the C-terminal coiled-coil leucine-zipper structure, are defective in binding and degradation of sigma32 protein and the phage lambda CII proteins, the mutations do not interfere with the ATPase activity, the mutants are more sensitive against trypsin digestion than the wild-type and show reduced growth Escherichia coli

Localization

Localization Comment Organism GeneOntology No. Textmining
cytoplasmic membrane
-
Escherichia coli
-
-

Metals/Ions

Metals/Ions Comment Organism Structure
Zn2+ metalloprotease Escherichia coli

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
protein + H2O Escherichia coli
-
peptides
-
?

Organism

Organism UniProt Comment Textmining
Escherichia coli
-
-
-

Purification (Commentary)

Purification (Comment) Organism
coiled-coil C-terminus, residues 541-585, as His-tagged peptide Escherichia coli

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
CII protein of phage lambda + H2O
-
Escherichia coli ?
-
?
protein + H2O
-
Escherichia coli peptides
-
?
sigma32 + H2O
-
Escherichia coli ?
-
?

Subunits

Subunits Comment Organism
More C-terminal region of the enzyme, residues 541-585, forms a coiled-coil, leucine-zipper structure, three of the leucine residues are essential Escherichia coli

Synonyms

Synonyms Comment Organism
FtsH
-
Escherichia coli
HflB
-
Escherichia coli
M41.001 Merops-ID Escherichia coli

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
22
-
assay at, ambient temperature Escherichia coli

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.4
-
assay at Escherichia coli

Cofactor

Cofactor Comment Organism Structure
ATP dependent on Escherichia coli