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Literature summary extracted from

  • Kaplan, F.; Guy, C.L.
    RNA interference of Arabidopsis beta-amylase8 prevents maltose accumulation upon cold shock and increases sensitivity of PSII photochemical efficiency to freezing stress (2005), Plant J., 44, 730-743.
    View publication on PubMed

Activating Compound

EC Number Activating Compound Comment Organism Structure
3.2.1.2 additional information the enzyme is induced during low temperature stress at 4°C Arabidopsis thaliana

Cloned(Commentary)

EC Number Cloned (Comment) Organism
3.2.1.2 DNA sequence determination, construction of BMY8 knockout plants, and of BMY8 RNAi plants Arabidopsis thaliana

Protein Variants

EC Number Protein Variants Comment Organism
3.2.1.2 additional information construction of BMY8 knockout plants, and of BMY8 RNAi plants, enzyme induction upon a cold shock leads to starch-dependent maltose accumulation, which can be prevented by RNA interference, phenotype and starch content of recombinant BMY8 RNAi plants, freezing tolerance of recombinant plants, overview Arabidopsis thaliana

Localization

EC Number Localization Comment Organism GeneOntology No. Textmining

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
3.2.1.2 starch + H2O Arabidopsis thaliana enzyme induction upon a cold shock at 4°C leads to starch-dependent maltose accumulation, which might be required for protection of the photosynthetic electron transport chain and sensitization of PSII during freezing, maltose influences the carbohydrate metabolism, overview maltose + ?
-
 ?

Organism

EC Number Organism UniProt Comment Textmining
3.2.1.2 Arabidopsis thaliana O23553 gene dl4575c or At4g170990, putative beta-amylase; ecotype Columbia, gene dl4575c or At4g170990
-

Source Tissue

EC Number Source Tissue Comment Organism Textmining
3.2.1.2 cotyledon
-
 Arabidopsis thaliana
-
3.2.1.2 leaf
-
 Arabidopsis thaliana
-
3.2.1.2 seedling
-
 Arabidopsis thaliana
-

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
3.2.1.2 additional information
-
-
 Arabidopsis thaliana

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.2.1.2 starch + H2O
-
 Arabidopsis thaliana maltose + ?
-
 ?
3.2.1.2 starch + H2O enzyme induction upon a cold shock at 4°C leads to starch-dependent maltose accumulation, which might be required for protection of the photosynthetic electron transport chain and sensitization of PSII during freezing, maltose influences the carbohydrate metabolism, overview Arabidopsis thaliana maltose + ?
-
 ?

Synonyms

EC Number Synonyms Comment Organism
3.2.1.2 ARATH
-
 Arabidopsis thaliana
3.2.1.2 beta-amylase8
-
 Arabidopsis thaliana
3.2.1.2 BMY
-
 Arabidopsis thaliana

Temperature Range [°C]

EC Number Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
3.2.1.2 additional information
-
 freezing tolerance of recombinant plants, overview Arabidopsis thaliana