3.4.23.34: cathepsin E
This is an abbreviated version!
For detailed information about cathepsin E, go to the full flat file.
Word Map on EC 3.4.23.34
-
3.4.23.34
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cathepsins
-
proteinases
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pepstatin
-
pepsinogen
-
procathepsin
-
molecular biology
-
gastricsin
-
medicine
-
foveolar
-
non-lysosomal
-
3.4.23.5
- 3.4.23.34
- cathepsins
- proteinases
- pepstatin
- pepsinogen
-
procathepsin
- molecular biology
- gastricsin
- medicine
-
foveolar
-
non-lysosomal
-
3.4.23.5
Reaction
similar to cathepsin D, but slightly broader specificity =
Synonyms
CatE, Cathepsin D-like acid proteinase, cathepsin D-like aspartic proteinase, cathepsin D-like protease, Cathepsin D-type proteinase, cathepsin E, Cathepsin E-like acid proteinase, CE, CTSE, EMAP, erythrocyte membrane acid proteinase, Erythrocyte membrane aspartic proteinase, gastric mucosa non-pepsin acid proteinase, More, Non-pepsin proteinase, slow moving proteinase, Slow-moving proteinase, SMP
ECTree
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Substrates Products
Substrates Products on EC 3.4.23.34 - cathepsin E
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REACTION DIAGRAM
(7-methoxycoumarin-4-yl)-acetyl-Gly-Lys-Pro-Ile-Ile-Phe-Phe-Arg-Leu-Lys(2,4-dinitrophenyl)-D-Arg-NH2 + H2O
?
-
fluorogenic synthetic substrate
-
?
(7-methoxycoumarin-4-yl)acetyl-Gly-Lys-Pro-Ile-Ile-Phe-Phe-Arg-Leu-Lys(Dnp)-D-Arg-NH2 + H2O
?
-
-
-
-
?
(7-methoxycoumarin-4-yl)acetyl-Gly-Lys-Pro-Ile-Leu-Phe-Phe-Arg-Leu-Lys(dinitrophenyl)-D-Arg-NH2
(7-methoxycoumarin-4-yl)acetyl-Gly-Lys-Pro-Ile-Leu-Phe + Phe-Arg-Leu-Lys(dinitrophenyl)-D-Arg-NH2
(7-methoxycoumarin-4-yl)acetyl-Gly-Lys-Pro-Ile-Leu-Phe-Phe-Arg-Leu-Lys(dinitrophenyl)-D-Arg-NH2 + H2O
?
-
-
-
-
?
(7-methoxycoumarin-4-yl)acetyl-Gly-Lys-Pro-Ile-Leu-Phe-Phe-Arg-Leu-Lys(Dnp)-D-Arg-NH2 + H2O
(7-methoxycoumarin-4-yl)acetyl-Gly-Lys-Pro-Ile-Leu-Phe + Phe-Arg-Leu-Lys(Dnp)-D-Arg-NH2
-
-
-
-
?
(7-methoxycoumarin-4-yl)acetyl-Gly-Lys-Pro-Ile-Leu-Phe-Phe-Arg-Leu-Lys(Dnp)-D-Arg-NH2 + H2O
?
-
-
-
-
?
(7-methoxycoumarin-4-yl)acetyl-Gly-Ser-Ser-Ala-Phe-Leu-Ala-Phe-Lys(Dnp)-D-Arg-NH2 + H2O
?
-
-
-
-
?
(7-methoxycoumarin-4-yl)acetyl-L-Ala-Gly-L-Phe-L-Ser-L-Leu-L-Pro-L-Ala-L-Lys(Dnp)-D-Arg-amide + H2O
(7-methoxycoumarin-4-yl)acetyl-L-Ala-Gly-L-Phe-L-Ser-L-Leu + L-Pro-L-Ala-L-Lys(Dnp)-D-Arg-amide
-
due to the close proximity of a Mca-donor and a Dnp-acceptor, near complete intramolecular quenching effect is achieved in the substrate's intact state. After the proteolytic cleavage of the hydrophobic motif, both Mca and Dnp are further apart, resulting in bright fluorescence
substrate shows a 265fold difference in the net fluorescence signals between cathepsins E and D. This cathepsin E selectivity is established by having Leu-Pro residues at the scissile peptide bond
-
?
Acidic fibroblast growth factor fragment 102-111 + H2O
His-Ala-Glu-Lys-His-Trp-Phe + Val-Gly-Leu
Cytochrome c + H2O
Hydrolyzed cytochrome c
-
pH 5, at 2.5% (dimeric enzyme) or 2.3% (monomeric enzyme) the rate of hemoglobin hydrolysis
-
?
DED-[5-[(2-aminoethyl)amino]naphthalene-1-sulfonyl]-KPILFFRLGK-[4-(4-dimethylaminophenylazo)benzoic acid] + H2O
?
-
-
-
-
?
glucagon + ATP + H2O
hydrolyzed glucagon + ?
-
is digested at pH 4.0 but not at pH 7.4
-
-
?
Human endothelin precursor big ET-1 + H2O
Human endothelin precursor ET-1 + respective C-terminal fragment
Human endothelin precursor big ET-2 + H2O
Human endothelin precursor ET-2 + respective C-terminal fragment
-
cleavage site: Trp-Val
-
?
Human endothelin precursor big ET-3 + H2O
Huamn endothelin precursor ET-3 + respective C-terminal fragment
-
cleavage site: Trp-Ile
-
?
Human gamma-globulin + H2O
Hydrolyzed human gamma-globulin
-
pH 5, at 0.5% (dimeric enzyme) or 0.6% (monomeric enzyme) the rate of hemoglobin hydrolysis
-
?
Lys-Pro-Ala-Glu-Phe-(4-nitro)Phe-Arg-Leu + H2O
Lys-Pro-Ala-Glu-Phe + (4-nitro)Phe-Arg-Leu
-
-
-
?
Lys-Pro-Ile-Glu-Phe-(4-nitro)Phe-Arg-Leu + H2O
Lys-Pro-Ile-Glu-Phe + (4-nitro)Phe-Arg-Leu
MOCAc-Gly-Lys-Pro-Ile-Ile-Phe-Phe-Arg-Leu-Lys(DnP)-D-Arg-NH2 + H2O
?
-
-
-
?
MOCAc-Gly-Lys-Pro-Ile-Leu-Phe-Phe-Arg-Leu-Lys(Dnp)-D-Arg-NH2 + H2O
?
-
-
-
-
?
MOCAc-Gly-Lys-Pro-Ile-Leu-Phe-Phe-Arg-Leu-Lys(Dnp)-D-Arg-NH2 + H2O
MOCAc-Gly-Lys-Pro-Ile-Leu-Phe + Phe-Arg-Leu-Lys(Dnp)-D-Arg-NH2
-
-
-
-
?
MOCAc-Gly-Ser-Pro-Ala-Phe-Leu-Ala-Lys(DNP)-D-Arg-NH2 + H2O
hydrolyzed MOCAc-Gly-Ser-Pro-Ala-Phe-Leu-Ala-Lys(DNP)-D-Arg-NH2
-
-
-
-
?
N-succinyl-Arg-Pro-Phe-His-Leu-Leu-Val-Tyr-4-methyl-7-coumaryl-amide + H2O
?
-
-
-
?
Porcine renin substrate + H2O
Acetyl-Asp-Arg-Val-Tyr-Ile-His-Pro-Phe-His-Leu + Leu-Val-Tyr-Ser
Pro-Thr-Glu-Phe-(4-nitro)Phe-Arg-Leu + H2O
Pro-Thr-Glu-Phe + (4-nitro)Phe-Arg-Leu
-
-
-
?
Reduced and carboxymethylated bovine pancreatic ribonuclease A + H2O
Hydrolyzed bovine pancreatic RCm ribonuclease A
-
-
-
?
(7-methoxycoumarin-4-yl)acetyl-Gly-Lys-Pro-Ile-Leu-Phe + Phe-Arg-Leu-Lys(dinitrophenyl)-D-Arg-NH2
-
-
-
-
?
(7-methoxycoumarin-4-yl)acetyl-Gly-Lys-Pro-Ile-Leu-Phe-Phe-Arg-Leu-Lys(dinitrophenyl)-D-Arg-NH2
(7-methoxycoumarin-4-yl)acetyl-Gly-Lys-Pro-Ile-Leu-Phe + Phe-Arg-Leu-Lys(dinitrophenyl)-D-Arg-NH2
-
-
-
-
?
?
-
most sensitive and selective substrate for cathepsin E. This substrate might represent a useful tool for monitoring and accurately quantifying cathepsin E, even in crude enzyme preparations
-
-
?
(7-methoxycoumarin-4-yl)acetyl-Gly-Ser-Pro-Ala-Phe-Leu-Ala-Lys(Dnp)-D-Arg-NH2 + H2O
?
-
-
-
-
?
(7-methoxycoumarin-4-yl)acetyl-Gly-Ser-Pro-Ala-Phe-Leu-Ala-Lys(Dnp)-D-Arg-NH2 + H2O
?
-
most sensitive and selective substrate for cathepsin E. This substrate might represent a useful tool for monitoring and accurately quantifying cathepsin E, even in crude enzyme preparations
-
-
?
His-Ala-Glu-Lys-His-Trp-Phe + Val-Gly-Leu
-
i.e. His-Ala-Glu-Lys-His-Trp-Phe-Val-Gly-Leu or acidic FGF 102-111
-
?
Acidic fibroblast growth factor fragment 102-111 + H2O
His-Ala-Glu-Lys-His-Trp-Phe + Val-Gly-Leu
-
i.e. His-Ala-Glu-Lys-His-Trp-Phe-Val-Gly-Leu or acidic FGF 102-111
-
?
?
-
i.e. Tyr-Arg-Ser-Arg-Lys-Tyr-Ser-Ser-Trp-Tyr-Val-Ala-Leu-Lys-Arg or basic FGF 106-120, major cleavage site: Tyr-Val, minor site: Trp-Tyr
-
-
?
Basic fibroblast growth factor fragment 106-120 + H2O
?
-
i.e. Tyr-Arg-Ser-Arg-Lys-Tyr-Ser-Ser-Trp-Tyr-Val-Ala-Leu-Lys-Arg or basic FGF 106-120, major cleavage site: Tyr-Val, minor site: Trp-Tyr
-
-
?
Bovine gamma-globulin + H2O
Hydrolyzed bovine gamma-globulin
-
pH 2.5, at 2.3% the rate of hemoglobin hydrolysis
-
?
Bovine serum albumin + H2O
Hydrolyzed bovine serum albumin
-
pH 5, at 3.6% (dimeric enzyme) or 4.1% (monomeric enzyme) the rate of hemoglobin hydrolysis
-
?
Bovine serum albumin + H2O
Hydrolyzed bovine serum albumin
-
pH 2.5 at 14% the rate of hemoglobin hydrolysis
-
-
?
casein + H2O
hydrolyzed casein
-
pH 5, at 9.1% (dimeric enzyme) or 8.9% (monomeric enzyme) the rate of hemoglobin hydrolysis
-
-
?
casein + H2O
hydrolyzed casein
-
at 2.3% the rate of hemoglobin hydrolysis
-
?
Asp-Tyr-Met-Gly-Trp + Met-Asp-Phe-NH2
-
i.e. Asp-Tyr-Met-Gly-Trp-Met-Asp-Phe-NH2, cleavage site: Trp-Met
-
?
Cholecystokinin 8 + H2O
Asp-Tyr-Met-Gly-Trp + Met-Asp-Phe-NH2
-
i.e. Asp-Tyr-Met-Gly-Trp-Met-Asp-Phe-NH2, cleavage site: Trp-Met
-
?
dynorphin A + H2O
hydrolyzed dynorphin A
-
cleavage site: Phe4-Leu5
-
?
Hydrolyzed egg albumin
-
pH 5, at 1% (dimeric enzyme) or 1.1% (monomeric enzyme) the rate of hemoglobin hydrolysis
-
?
Pyro-Glu-Pro-Ser-Lys-Asp-Ala-Phe + Ile-Gly-Leu-Met-NH2
-
i.e. pyro-Glu-Pro-Ser-Lys-Asp-Ala-Phe-Ile-Gly-Leu-Met-NH2, cleavage site: Phe-Ile
-
?
Eledoisin + H2O
Pyro-Glu-Pro-Ser-Lys-Asp-Ala-Phe + Ile-Gly-Leu-Met-NH2
-
i.e. pyro-Glu-Pro-Ser-Lys-Asp-Ala-Phe-Ile-Gly-Leu-Met-NH2, cleavage site: Phe-Ile
-
?
Hemoglobin + H2O
Hydrolyzed hemoglobin
-
at pH 2 the two catalytically active subunits have the same activity vs. hemoglobin, but at pH 5 they have a slightly higher activity than the enzyme dimer
-
?
Hydrolyzed human beta-endorphin
-
major cleavage site: Leu17-Phe18, minor site: Thr16-Leu17
-
?
Human beta-endorphin + H2O
Hydrolyzed human beta-endorphin
-
major cleavage site: Leu17-Phe18, minor site: Thr16-Leu17
-
?
Human endothelin precursor ET-1 + respective C-terminal fragment
-
cleavage site: Trp-Val
-
?
Human endothelin precursor big ET-1 + H2O
Human endothelin precursor ET-1 + respective C-terminal fragment
-
cleavage site: Trp-Val
-
?
Human endothelin precursor big ET-1 + H2O
Human endothelin precursor ET-1 + respective C-terminal fragment
-
cleavage site: Trp-Val
-
?
Human endothelin precursor big ET-1 + H2O
Human endothelin precursor ET-1 + respective C-terminal fragment
-
cleavage site: Trp-Val
-
?
Asp-Arg-Val-Tyr-Ile-His-Pro-Phe-His-Leu + Val-Ile-His
-
i.e. angiotensinogen fragment 1-13 or Asp-Arg-Val-Tyr-Ile-His-Pro-Phe-His-Leu-Val-Ile-His, cleavage site: Leu-Val
-
?
Human renin substrate + H2O
Asp-Arg-Val-Tyr-Ile-His-Pro-Phe-His-Leu + Val-Ile-His
-
i.e. angiotensinogen fragment 1-13 or Asp-Arg-Val-Tyr-Ile-His-Pro-Phe-His-Leu-Val-Ile-His, cleavage site: Leu-Val
-
?
Asp-Val-Pro-Lys-Ser-Asp-Gln-Phe + Val-Gly-Leu-Met-NH2
-
i.e. Asp-Val-Pro-Lys-Ser-Asp-Gln-Phe-Val-Gly-Leu-Met-NH2, cleavage site: Phe-Val
-
?
Kassinin + H2O
Asp-Val-Pro-Lys-Ser-Asp-Gln-Phe + Val-Gly-Leu-Met-NH2
-
i.e. Asp-Val-Pro-Lys-Ser-Asp-Gln-Phe-Val-Gly-Leu-Met-NH2, cleavage site: Phe-Val
-
?
Lys-Pro-Ile-Glu-Phe + (4-nitro)Phe-Arg-Leu
-
synthetic chromogenic peptide, less suitable peptide substrate than substance P or other tachykinins
-
-
?
Lys-Pro-Ile-Glu-Phe-(4-nitro)Phe-Arg-Leu + H2O
Lys-Pro-Ile-Glu-Phe + (4-nitro)Phe-Arg-Leu
-
-
-
?
Lys-Pro-Ile-Glu-Phe-(4-nitro)Phe-Arg-Leu + H2O
Lys-Pro-Ile-Glu-Phe + (4-nitro)Phe-Arg-Leu
-
-
-
-
?
Lys-Pro-Ile-Glu-Phe-(4-nitro)Phe-Arg-Leu + H2O
Lys-Pro-Ile-Glu-Phe + (4-nitro)Phe-Arg-Leu
-
synthetic chromogenic peptide, less suitable peptide substrate than substance P or other tachykinins
-
-
?
Lys-Pro-Ile-Glu-Phe-(4-nitro)Phe-Arg-Leu + H2O
Lys-Pro-Ile-Glu-Phe + (4-nitro)Phe-Arg-Leu
-
pH 7.4
-
-
?
Lys-Pro-Ile-Glu-Phe-(4-nitro)Phe-Arg-Leu + H2O
Lys-Pro-Ile-Glu-Phe + (4-nitro)Phe-Arg-Leu
-
no activation by ATP
-
-
?
Lys-Pro-Ile-Glu-Phe-(4-nitro)Phe-Arg-Leu + H2O
Lys-Pro-Ile-Glu-Phe + (4-nitro)Phe-Arg-Leu
-
-
-
-
?
Lys-Pro-Ile-Glu-Phe-(4-nitro)Phe-Arg-Leu + H2O
Lys-Pro-Ile-Glu-Phe + (4-nitro)Phe-Arg-Leu
-
synthetic chromogenic peptide, less suitable peptide substrate than substance P or other tachykinins
-
-
?
Lys-Pro-Ile-Glu-Phe-(4-nitro)Phe-Arg-Leu + H2O
Lys-Pro-Ile-Glu-Phe + (4-nitro)Phe-Arg-Leu
-
-
-
?
Lys-Pro-Ile-Glu-Phe-(4-nitro)Phe-Arg-Leu + H2O
Lys-Pro-Ile-Glu-Phe + (4-nitro)Phe-Arg-Leu
-
synthetic chromogenic peptide, less suitable peptide substrate than substance P or other tachykinins
-
-
?
Lys-Pro-Ile-Glu-Phe-(4-nitro)Phe-Arg-Leu + H2O
Lys-Pro-Ile-Glu-Phe + (4-nitro)Phe-Arg-Leu
-
i.e. RS-6
-
-
?
His-Lys-Thr-Asp-Ser-Phe + Val-Gly-Leu-Met-NH2
-
i.e. His-Lys-Thr-Asp-Ser-Phe-Val-Gly-Leu-Met-NH2, cleavage site: Phe-Val
-
?
Neurokinin A + H2O
His-Lys-Thr-Asp-Ser-Phe + Val-Gly-Leu-Met-NH2
-
i.e. His-Lys-Thr-Asp-Ser-Phe-Val-Gly-Leu-Met-NH2, cleavage site: Phe-Val
-
?
Hydrolyzed oxidized insulin B-chain
-
cleavage sites
-
-
?
Oxidized insulin B-chain + H2O
Hydrolyzed oxidized insulin B-chain
-
cleavage sites
-
-
?
Oxidized insulin B-chain + H2O
Hydrolyzed oxidized insulin B-chain
-
no activation by ATP
-
?
Oxidized insulin B-chain + H2O
Hydrolyzed oxidized insulin B-chain
-
cleavage specificity changes significantly with pH, e.g. cleaves Glu13-Ala14 only at pH 7.4
-
?
Oxidized insulin B-chain + H2O
Hydrolyzed oxidized insulin B-chain
-
cleavage sites
-
-
?
Oxidized insulin B-chain + H2O
Hydrolyzed oxidized insulin B-chain
-
cleavage sites
-
-
?
Acetyl-Asp-Arg-Val-Tyr-Ile-His-Pro-Phe-His-Leu + Leu-Val-Tyr-Ser
-
i.e. angiotensinogen fragment 1-14 acetate salt or acetyl-Asp-Arg-Val-Tyr-Ile-His-Pro-Phe-His-Leu-Leu-Val-Tyr-Ser, cleavage site: Leu-Leu
-
?
Porcine renin substrate + H2O
Acetyl-Asp-Arg-Val-Tyr-Ile-His-Pro-Phe-His-Leu + Leu-Val-Tyr-Ser
-
i.e. angiotensinogen fragment 1-14 acetate salt or acetyl-Asp-Arg-Val-Tyr-Ile-His-Pro-Phe-His-Leu-Leu-Val-Tyr-Ser, cleavage site: Leu-Leu
-
?
Pro-Pro-Thr-Ile-Phe + (4-nitro)Phe-Arg-Leu
-
-
-
-
?
Pro-Pro-Thr-Ile-Phe-(4-nitro)Phe-Arg-Leu + H2O
Pro-Pro-Thr-Ile-Phe + (4-nitro)Phe-Arg-Leu
-
-
-
-
?
Pro-Pro-Thr-Ile-Phe-(4-nitro)Phe-Arg-Leu + H2O
Pro-Pro-Thr-Ile-Phe + (4-nitro)Phe-Arg-Leu
-
synthetic chromogenic peptide
-
?
Pro-Pro-Thr-Ile-Phe-(4-nitro)Phe-Arg-Leu + H2O
Pro-Pro-Thr-Ile-Phe + (4-nitro)Phe-Arg-Leu
-
synthetic chromogenic peptide
-
-
?
Pro-Pro-Thr-Ile-Phe-(4-nitro)Phe-Arg-Leu + H2O
Pro-Pro-Thr-Ile-Phe + (4-nitro)Phe-Arg-Leu
-
synthetic chromogenic peptide
-
?
Arg-Pro-Lys-Pro-Gln-Gln-Phe + Phe-Gly-Leu-Met-NH2
-
i.e. Arg-Pro-Lys-Pro-Gln-Gln-Phe-Phe-Gly-Leu-Met-NH2, best peptide substrate, cleavage site: Phe-Phe
-
?
Substance P + H2O
Arg-Pro-Lys-Pro-Gln-Gln-Phe + Phe-Gly-Leu-Met-NH2
-
i.e. Arg-Pro-Lys-Pro-Gln-Gln-Phe-Phe-Gly-Leu-Met-NH2, best peptide substrate, cleavage site: Phe-Phe
-
?
Substance P + H2O
Arg-Pro-Lys-Pro-Gln-Gln-Phe + Phe-Gly-Leu-Met-NH2
-
i.e. Arg-Pro-Lys-Pro-Gln-Gln-Phe-Phe-Gly-Leu-Met-NH2, best peptide substrate, cleavage site: Phe-Phe
-
?
Substance P + H2O
Arg-Pro-Lys-Pro-Gln-Gln-Phe + Phe-Gly-Leu-Met-NH2
-
i.e. Arg-Pro-Lys-Pro-Gln-Gln-Phe-Phe-Gly-Leu-Met-NH2, best peptide substrate, cleavage site: Phe-Phe
-
?
?
-
-
no hydrolysis of synthetic peptides corresponding to residues His16-His27 and His16-Ser38 in the big ET-1 sequence
-
-
?
additional information
?
-
-
milk-clotting activity is twice as high as that of pepsinogen and gastricin
-
-
?
additional information
?
-
-
degradation of protein antigens, crucial step in the initiation of a T-cell mediated immune response
-
?
additional information
?
-
-
cathepsin E has an important role in the class II MHC Ag processing pathway within dendritic cells
-
-
?
additional information
?
-
-
cathepsin E has an important role in the class II MHC Ag processing pathway within dendritic cells
-
-
?
additional information
?
-
-
cathepsin E is located in mast-cell secretory granules in complex with heparin proteoglycans, and has a role in processing of procarboxypeptidase A into active protease
-
-
?