beta-Amylase - Metabolism
Research News and Information

Sunday, November 22, 2009

Catalytically-inactive beta-amylase BAM4 required for starch breakdown in Arabidopsis leaves is a starch-binding-protein.

3 Aug 2009 Of the four chloroplast beta-amylase (BAM) proteins identified in Arabidopsis, BAM3 and BAM4 were previously shown to play the major roles in leaf starch breakdown, although BAM4 apparently lacks key active site residues and beta-amylase activity. ... Read more...

The effect of H2O2 and abscisic acid (ABA) interaction on beta-amylase activity under osmotic stress during grain development in barley.

27 May 2009 The effects of exogenous abscisic acid (ABA) and polyethylene glycol (PEG 6000) treatments on grain H(2)O(2), ABA and beta-amylase activity were studied during grain development in the spike culture experiments with variety Triumph and its ... Read more...

Fermentation of rice bran and defatted rice bran for butanol 5 production using clostridium beijerinckii NCIMB 8052.

29 Apr 2009 We examined butanol fermentation by Clostridium beijerinckii NCIMB 8052 using various hydrolyzates obtained from rice bran, which is one of the most abundant agricultural by-products in Korea and Japan. In order to increase the amount of fermentable ... Read more...

Latest indexed articles for 'beta-Amylase - Metabolism'

These are the very latest articles for this heading:

• Catalytically-inactive beta-amylase BAM4 required for starch breakdown in Arabidopsis leaves is a starch-binding-protein. 3 Aug 2009
• The effect of H2O2 and abscisic acid (ABA) interaction on beta-amylase activity under osmotic stress during grain development in barley. 27 May 2009
• Fermentation of rice bran and defatted rice bran for butanol 5 production using clostridium beijerinckii NCIMB 8052. 29 Apr 2009
• Network analysis of biochemical logic for noise reduction and stability: a system of three coupled enzymatic and gates. 14 Apr 2009
• Purification and characterization of camel (Camelus dromedarius) milk amylase. 30 Dec 2008
• Integration of the barley genetic and seed proteome maps for chromosome 1H, 2H, 3H, 5H and 7H. 12 Nov 2008
• The reduction of starch accumulation in transgenic sugarcane cell suspension culture lines. 30 Oct 2008
• Amylolytic hydrolysis of native starch granules affected by granule surface area. 30 Oct 2008
• Construction of a novel cell-surface display system for heterologous gene expression in Escherichia coli by using an outer membrane protein of Zymomonas mobilis as anchor motif. 6 Aug 2008
• Mango starch degradation. I. A microscopic view of the granule during ripening. 24 Jul 2008
• Mango starch degradation. II. The binding of alpha-amylase and beta-amylase to the starch granule. 24 Jul 2008
• Beta-AMYLASE4, a noncatalytic protein required for starch breakdown, acts upstream of three active beta-amylases in Arabidopsis chloroplasts. 2 Apr 2008
• Carbohydrate mobilization and gene regulatory profile in the pseudobulb of Oncidium orchid during the flowering process. 7 Jan 2008
• Effect of water deficit on carbohydrate status and enzymes of carbohydrate metabolism in seedlings of wheat cultivars. 30 Jul 2007
• Glucan, water dikinase activity stimulates breakdown of starch granules by plastidial beta-amylases. 11 Jul 2007
• Priming of seeds with nitric oxide donor sodium nitroprusside (SNP) alleviates the inhibition on wheat seed germination by salt stress. 30 May 2007
• A novel alpha-glucosidase from the moss Scopelophila cataractae. 13 May 2007
• Kinetic and structural analysis of enzyme sliding on a substrate: multiple attack in beta-amylase. 21 Jan 2007
• Combined toxicity of cadmium and arsenate to wheat seedlings and plant uptake and antioxidative enzyme responses to cadmium and arsenate co-contamination. 16 Jan 2007
• [New look at starch degradation in Arabidopsis thaliana L. chloroplasts] 30 Dec 2006

See a longer list of these articles.

Technical information about 'beta-Amylase'

Definition: An enzyme that catalyzes the hydrolysis of 1,4-alpha-glycosidic linkages in starch, glycogen, and related polysaccharides and oligosaccharides so as to remove successive beta-maltose units from the non-reducing ends of the chains. EC 3.2.1.2.

Chemical name: 1,4-alpha-D-Glucan maltohydrolase

Registry Number: EC 3.2.1.2

Descriptor UI: D001614

Alternative terms: beta-Amylase; beta Amylase;

Allowable Qualifiers: administration & dosage; adverse effects; analysis; antagonists & inhibitors; biosynthesis; blood; cerebrospinal fluid; chemical synthesis; classification; deficiency; diagnostic use; drug effects; economics; genetics; history; immunology; isolation & purification; metabolism; pharmacokinetics; pharmacology; physiology; poisoning; radiation effects; secretion; standards; supply & distribution; therapeutic use; toxicity; ultrastructure; urine; chemistry; contraindications;

Tree Number: D08.811.277.450.066.100;

History Note: 91(78); was see under AMYLASES 1978-90