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Literature summary for 3.2.1.1 extracted from

  • Cruz, W.O.; Sinhori, G.G.C.; de Lima, C.A.R.; Pontes, E.G.
    Biochemical properties of alpha-amylase from midgut of Alphitobius diaperinus (Panzer) (Coleoptera Tenebrionidae) larvae (2018), Neotrop. Entomol., 47, 698-708 .
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
additional information effect of types of poultry food on Alphitobius diaperinus midgut alpha-amylase, overview. Alphitobius diaperinus larvae are reared for 48 h in different types of poultry food (starter, grower, finisher, and layer), and subsequently midgut homogenates activities are determined, highest activity is observed in starter food Alphitobius diaperinus

Inhibitors

Inhibitors Comment Organism Structure
Ca2+ 11.4% inhibition at 10 mM, 56.2% at 50 mM Alphitobius diaperinus
additional information the enzyme activity is significantly inhibited by some proteinaceous extracts from common bean cultivars, and it declines with increasing proteinaceous concentration. Proteinaceous extracts from Phaseolus vulgaris seeds are made from bean flour through heat treatment and dialysis Alphitobius diaperinus
NaCl 52% inhibition at 500 mM Alphitobius diaperinus

Metals/Ions

Metals/Ions Comment Organism Structure
additional information alpha-amylase requires metal ions for activity and structural stability Alphitobius diaperinus

Organism

Organism UniProt Comment Textmining
Alphitobius diaperinus
-
collected in Poultry Sector of Universidade Federal Rural do Rio de Janeiro, Brasil
-

Source Tissue

Source Tissue Comment Organism Textmining
larva
-
Alphitobius diaperinus
-
midgut larvaeal Alphitobius diaperinus
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
starch + H2O 1% starch w/v Alphitobius diaperinus maltose + ?
-
?

Subunits

Subunits Comment Organism
? x * 42000, SDS-PAGE Alphitobius diaperinus

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
42
-
-
Alphitobius diaperinus

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
20 80 activity range, profile overview, 30.2% of maximal activity at assay temperature 35°C Alphitobius diaperinus

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
60
-
larvaeal alpha-amylase maintains 34.6% activity after 5 min, and 23% after 60 min Alphitobius diaperinus
80
-
larvaeal alpha-amylase maintains 14% activity after 5 min, and 6% after 60 min Alphitobius diaperinus
100
-
larvaeal alpha-amylase loses 70% of activity after about 2 min, and after over 5 min, the enzyme is completely inactivated Alphitobius diaperinus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5
-
-
Alphitobius diaperinus

pH Range

pH Minimum pH Maximum Comment Organism
4.8 6 high activity within this range Alphitobius diaperinus