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Literature summary for 3.4.17.2 extracted from

  • Kishimura, H.; Hayashi, K.; Ando, S.
    Characteristics of carboxypeptidase B from pyloric ceca of the starfish Asterina pectinifera (2005), Food Chem., 95, 264-269.
No PubMed abstract available

Inhibitors

Inhibitors Comment Organism Structure
EDTA 6 h, 1 mM, 90% inhibition Patiria pectinifera

Metals/Ions

Metals/Ions Comment Organism Structure
Co2+ activates 1.7fold at 25°C and pH 7.5 Patiria pectinifera
Zn2+ 1 mol Zn2+ per mol of enzyme Patiria pectinifera

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
34000
-
x * 34000, SDS-PAGE Patiria pectinifera

Organism

Organism UniProt Comment Textmining
Patiria pectinifera
-
starfish
-

Purification (Commentary)

Purification (Comment) Organism
native enzyme 418fold from pyloric ceca to near homogeneity by gel filtration, anion exchange chromatography, and another step of gel filtration Patiria pectinifera

Source Tissue

Source Tissue Comment Organism Textmining
pyloric cecum
-
Patiria pectinifera
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
-
Patiria pectinifera

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
benzoyl-Gly-L-Arg + H2O
-
Patiria pectinifera benzoyl-Gly + L-Arg
-
?

Subunits

Subunits Comment Organism
? x * 34000, SDS-PAGE Patiria pectinifera

Synonyms

Synonyms Comment Organism
CPB
-
Patiria pectinifera

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
55
-
-
Patiria pectinifera

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
30 70 inactivation above 50°C Patiria pectinifera

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
30 45 15 min, purified enzyme, stable Patiria pectinifera
50
-
15 min, the purified enzyme is unstable above Patiria pectinifera
60
-
15 min, loss of 70% of purified enzyme activity Patiria pectinifera

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.5
-
-
Patiria pectinifera

pH Range

pH Minimum pH Maximum Comment Organism
4 11 high loss of activity below pH 6.0 and above pH 10.0 Patiria pectinifera

pH Stability

pH Stability pH Stability Maximum Comment Organism
4
-
30 min, inactivation Patiria pectinifera
5
-
the purified enzyme is unstable below Patiria pectinifera
6 10 purified enzyme, stable Patiria pectinifera