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DBE1 protein (Arabidopsis thaliana) - STRING interaction network
"DBE1" - Isoamylase 2 in Arabidopsis thaliana
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Known Interactions
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experimentally determined
Predicted Interactions
gene neighborhood
gene fusions
gene co-occurrence
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textmining
co-expression
protein homology
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DBE1Isoamylase 2; Involved in the trimming of pre-amylopectin chains. Accelerates the crystallization of nascent amylopectin molecules during starch synthesis. ISA1 and ISA2 work exclusively together as a multimeric holoenzyme. ISA1-ISA2 removes preferentially branches that are very close to other branches (882 aa)    
Predicted Functional Partners:
SS4
Starch synthase 4; Probably involved in the priming of starch granule formation. May play a regulatory role in the control of starch accumulation in plastids. Is necessary and sufficient to establish the correct number of starch granules observed in chloroplasts (1040 aa)
   
   
  0.967
At1g11720
Starch synthase 3; Involved in the synthesis of glycan chains within amylopectin in leaves. May play a regulatory role in the control of starch accumulation in plastids (1094 aa)
   
   
  0.966
EMB2729
EMBRYO DEFECTIVE 2729; Catalyzes the formation of the alpha-1,6-glucosidic linkages in starch by scission of a 1,4-alpha-linked oligosaccharide from growing alpha-1,4-glucan chains and the subsequent attachment of the oligosaccharide to the alpha-1,6 position. Essential during embryogenesis (899 aa)
 
 
  0.961
AT3G29320
Alpha-glucan phosphorylase 1; Phosphorylase is an important allosteric enzyme in carbohydrate metabolism. Enzymes from different sources differ in their regulatory mechanisms and in their natural substrates. However, all known phosphorylases share catalytic and structural properties (By similarity). May be not required for the degradation of starch, but the phosphorolysis of starch may play an important role in water stress tolerance (962 aa)
   
 
  0.960
PHS2
Alpha-glucan phosphorylase 2; Phosphorylase is an important allosteric enzyme in carbohydrate metabolism. Enzymes from different sources differ in their regulatory mechanisms and in their natural substrates. However, all known phosphorylases share catalytic and structural properties (By similarity) (841 aa)
 
 
  0.958
AMY3
Alpha-amylase-like 3; Possesses endoamylolytic activity in vitro, but seems not required for breakdown of transitory starch in leaves. May be involved in the determination of the final structure of glucans by shortening long linear phospho-oligosaccharides in the chloroplast stroma (887 aa)
   
 
  0.957
DPE2
4-alpha-glucanotransferase; Cytosolic alpha-glucanotransferase essential for the cytosolic metabolism of maltose, an intermediate on the pathway by which starch is converted to sucrose in leaves at night. Metabolizes maltose exported from the chloroplast and is specific for beta-maltose. May play a role in freezing tolerance. Temperature drop induces inactivation of DPE2 that leads to rapid accumulation of maltose, a solute that protects cells from freezing damage (955 aa)
   
 
  0.955
LDA
Limit dextrinase; Involved in starch degradation and also probably in the trimming of pre-amylopectin chains during starch synthesis (965 aa)
   
   
  0.951
DPE1
Disproportionating enzyme; Chloroplastic alpha-glucanotransferase involved in maltotriose metabolism. Probably uses maltotriose as substrate to transfer a maltosyl unit from one molecule to another, resulting in glucose and maltopentaose. The latter can then be further metabolized to maltose and maltotriose by beta-amylase. Required for normal starch degradation in leaves (576 aa)
   
 
  0.940
SS1
Starch synthase 1; Involved in the synthesis of short glycan chains within amylopectin in leaves. Is required to generate chains up to about a degree of polymerization of 10 (DP10) (652 aa)
   
   
  0.932
Your Current Organism:
Arabidopsis thaliana
NCBI taxonomy Id: 3702
Other names: A. thaliana, Arabidopsis thaliana, Arabidopsis thaliana (L.) Heynh., mouse-ear cress, thale cress, thale-cress
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