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3.4.24.7: interstitial collagenase

This is an abbreviated version!
For detailed information about interstitial collagenase, go to the full flat file.

Word Map on EC 3.4.24.7

Reaction

Cleavage of the triple helix of collagen at about three-quarters of the length of the molecule from the N-terminus, at Gly775-/-Ile in the alpha1(I) chain. Cleaves synthetic substrates and alpha-macroglobulins at bonds where P1' is a hydrophobic residue =

Synonyms

azocollase, collagen peptidase, collagen protease, collagenase, collagenase 1, collagenase A, collagenase MMP-1, collagenase-1, collagenolytic matrix metalloproteinase, EC 3.4.99.5, ect-MMP-14, Fibroblast collagenase, HSFC, kollaza, macrophage matrix metalloproteinase, matrix metalloproteinase 1, matrix metalloproteinase-1, matrix metalloproteinase-18, matrix-metalloproteinase-1, membrane-type 1-MMP, metallocollagenase, metalloproteinase-1, MMP-1, MMP-12, MMP-14, MMP-1A, mmp1, MT1-MMP, Myocardial collagenase, nucleolysin, soycollagestin, TC1, tumor collagenase, vertebrate collagenase

ECTree

     3 Hydrolases
         3.4 Acting on peptide bonds (peptidases)
             3.4.24 Metalloendopeptidases
                3.4.24.7 interstitial collagenase

Engineering

Engineering on EC 3.4.24.7 - interstitial collagenase

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PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
DELTA243-340
-
about 10% increase in turnover number and 9% increase in Km-value compared to wild-type enzyme with fTHP-3 as substrate
DELTA243-450
-
the KM-value for the alpa1(I)772-786 triple-helical peptide is 3.3fold higher than that of the wild-type enzyme, the turnover number for this substrate is 2.5fold higher
E200A
catalytically inactive, but correctly folded mutant enzyme. MMP-1(Glu200Ala) has an intact HPX domain. The mutant can orient and help unwind the collagen triple helix, while the catalytic MMP-1 domain (MMP-1 CAT) cleaves the triple helix
E219A
inactive mutant
L338A/H339A
site-directed mutagenesis, the mutant shows an increased collagenase activity, the MMP-1 L338A/H339A mutant corresponds to the appearance of a unique anticorrelated motion and decreased correlated motions
R183Q/W184W/T185T/N186K/N187D/F188T/R189T/E190G/Y191T
-
mutation reduces collagenolytic activity about 10fold
V94G
constitutively active MMP-1 mutant. Expression of MMP-1 V94G in young skin in organ culture causes fragmentation and ultrastructural alterations of collagen fibrils similar to those observed in aged human skin in vivo. Expression of MMP-1 V94G in dermal fibroblasts cultured in three-dimensional collagen lattices causes substantial collagen fragmentation, which is markedly reduced by MMP-1 siRNA-mediated knockdown or MMP inhibitor MMI270. Fibroblasts cultured in MMP-1 V94G-fragmented collagen lattices display many alterations observed in fibroblasts in aged human skin, including reduced cytoplasmic area, disassembled actin cytoskeleton, impaired TGF-beta pathway, and reduced collagen production
Y191T
-
mutation reduces collagenolytic and gelatinolytic activity about 5fold
additional information