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Literature summary for 3.2.1.1 extracted from

  • Ben Elarbi, M.; Khemiri, H.; Jridi, T.; Ben Hamida, J.
    Purification and characterization of alpha-amylase from safflower (Carthamus tinctorius L.) germinating seeds (2009), C. R. Biol., 332, 426-432.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
Fe2+ complete inhibition at 5 and 10 mM Carthamus tinctorius
Zn2+ 22% residual activity at 10 mM Carthamus tinctorius

Metals/Ions

Metals/Ions Comment Organism Structure
Ca2+ 128% activity at 10 mM Carthamus tinctorius
additional information not affected by Mg2+ and Cu2+ Carthamus tinctorius

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
35000
-
SDS-PAGE Carthamus tinctorius

Organism

Organism UniProt Comment Textmining
Carthamus tinctorius
-
safflower
-

Purification (Commentary)

Purification (Comment) Organism
ammonium sulfate precipitation, beta-cyclodextrin-Sepharose column chromatography Carthamus tinctorius

Source Tissue

Source Tissue Comment Organism Textmining
cotyledon
-
Carthamus tinctorius
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
1.89
-
crude extract Carthamus tinctorius
246.5
-
after 131.52fold purification Carthamus tinctorius

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
starch + H2O
-
Carthamus tinctorius malto-oligosaccharides
-
?

Synonyms

Synonyms Comment Organism
alpha-1-4 D-glucan glucanohydrolase
-
Carthamus tinctorius

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
55
-
-
Carthamus tinctorius

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
30 70
-
Carthamus tinctorius

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
70 100 the enzyme loses 50% of its activity after 10 min incubation at 70°C and is completely denatured at 100°C Carthamus tinctorius

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6
-
-
Carthamus tinctorius

pH Range

pH Minimum pH Maximum Comment Organism
4 9
-
Carthamus tinctorius

pH Stability

pH Stability pH Stability Maximum Comment Organism
9
-
at pH values higher than 9.0 enzymatic activity drops sharply to 50% of maximal activity Carthamus tinctorius