Activating Compound | Comment | Organism | Structure |
---|---|---|---|
additional information | the enzyme requires reducing conditions for full activity | Arabidopsis thaliana | |
reduced DTT | strong activation of isozyme TR-BAMY | Arabidopsis thaliana | |
thioredoxin | thioredocins f1, m1, and y1, the isozyme TR-BAMY is positively thioredoxin-regulated | Arabidopsis thaliana |
Cloned (Comment) | Organism |
---|---|
isozyme CT-BAMY, DNA and amino acid sequence determination and analysis | Arabidopsis thaliana |
isozyme TR-BAMY, DNA and amino acid sequence determination and analysis, functional expression of mature isozyme TR-BAMY and of mutant enzymes in Escherichia coli strains HB101 and BL21(DE3), transient expression of GFP-tagged isozyme TR-BAMY in Nicotiana tabacum protoplasts with exclusive association to the chloroplasts | Arabidopsis thaliana |
Protein Variants | Comment | Organism |
---|---|---|
C148S | site-directed mutagenesis, the mutant shows a redox sensitivity similar to the wild-type enzyme | Arabidopsis thaliana |
C206S | site-directed mutagenesis, the mutant shows a redox sensitivity similar to the wild-type enzyme | Arabidopsis thaliana |
C261S | site-directed mutagenesis, the mutant shows a redox sensitivity similar to the wild-type enzyme | Arabidopsis thaliana |
C32S | site-directed mutagenesis, the mutant shows 70% impaired redox sensitivity compared to the wild-type enzyme | Arabidopsis thaliana |
C399S | site-directed mutagenesis, the mutant shows a redox sensitivity similar to the wild-type enzyme | Arabidopsis thaliana |
C413S | site-directed mutagenesis, the mutant shows a redox sensitivity similar to the wild-type enzyme | Arabidopsis thaliana |
C470S | site-directed mutagenesis, the mutant shows 70% impaired redox sensitivity compared to the wild-type enzyme | Arabidopsis thaliana |
C506S | site-directed mutagenesis, the mutant shows a redox sensitivity similar to the wild-type enzyme | Arabidopsis thaliana |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
additional information | the 41 amino acid transit peptide inhibits isozyme TR-BAMY | Arabidopsis thaliana |
Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|
chloroplast | plastid-targeted isozyme CT-BAMY, contains a plastid transit peptide | Arabidopsis thaliana | 9507 | - |
chloroplast | plastid-targeted isozyme TR-BAMY, contains a plastid transit peptide of 41 amino acids | Arabidopsis thaliana | 9507 | - |
plastid | plastid-targeted isozyme TR-BAMY, contains a plastid transit peptide of 41 amino acids | Arabidopsis thaliana | 9536 | - |
Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|
60000 | - |
recombinant mature isozyme TR-BAMY, gel filtration | Arabidopsis thaliana |
64000 | - |
recombinant precursor isozyme TR-BAMY, gel filtration | Arabidopsis thaliana |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
additional information | Arabidopsis thaliana | the isozyme TR-BAMY is redox- and thioredoxin-regulated involving residues C470 and C32 forming a disulfide bridge, the precursor enzyme conatining the transit pepetide is inactive | ? | - |
? | |
starch + H2O | Arabidopsis thaliana | - |
maltose + ? | - |
? | |
starch + H2O | Arabidopsis thaliana | the isozyme is involved in leaf starch degradation | maltose + ? | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Arabidopsis thaliana | O23553 | gene At4g170990, isozyme CT-BAMY; contains six extrachlorplastic isozymes, and three plastid-targeted isozymes | - |
Arabidopsis thaliana | Q9LIR6 | gene At3g23920/F14O13_11, isozyme TR-BAMY; contains six extrachloroplastic isozymes, and three plastid-targeted isozymes | - |
Purification (Comment) | Organism |
---|---|
native isozyme partially by chloroplast purification | Arabidopsis thaliana |
native isozyme partially by chloroplast purification, recombinant mature isozyme TR-BAMY and recombinant mutant enzymes from Escherichia coli | Arabidopsis thaliana |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
flower | isozyme TR-BAMY | Arabidopsis thaliana | - |
leaf | isozyme TR-BAMY | Arabidopsis thaliana | - |
pollen | isozyme TR-BAMY | Arabidopsis thaliana | - |
root | isozyme TR-BAMY | Arabidopsis thaliana | - |
seed | isozyme TR-BAMY | Arabidopsis thaliana | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
4-nitrophenyl maltopentaose + H2O | - |
Arabidopsis thaliana | 4-nitrophenol + maltopentaose | - |
? | |
additional information | the isozyme TR-BAMY is redox- and thioredoxin-regulated involving residues C470 and C32 forming a disulfide bridge, the precursor enzyme conatining the transit pepetide is inactive | Arabidopsis thaliana | ? | - |
? | |
starch + H2O | - |
Arabidopsis thaliana | maltose + ? | - |
? | |
starch + H2O | soluble starch | Arabidopsis thaliana | maltose + ? | - |
? | |
starch + H2O | the isozyme is involved in leaf starch degradation | Arabidopsis thaliana | maltose + ? | - |
? |
Subunits | Comment | Organism |
---|---|---|
monomer | 1 * 60000, recombinant mature isozyme TR-BAMY, SDS-PAGE, 1 * 64000, recombinant precursor isozyme TR-BAMY, SDS-PAGE | Arabidopsis thaliana |
Synonyms | Comment | Organism |
---|---|---|
CT-BMY | - |
Arabidopsis thaliana |
TR-BAMY | - |
Arabidopsis thaliana |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
37 | - |
assay at | Arabidopsis thaliana |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
additional information | - |
the isozyme TR-BAMY shifts between an active and an inactive form dependent on the pH | Arabidopsis thaliana |
6 | 8 | - |
Arabidopsis thaliana |