Protein Variants | Comment | Organism |
---|---|---|
additional information | heterozygous (Pp) and homozygous (pp) forms of a PEPC-deficient mutant of the C4 dicot Amaranthus edulis are analysed | Amaranthus edulis |
additional information | rates of CO2 assimilation in air drop to 78% and 10% of the wild-type values in heterozygous and homozygous mutants, respectively. Stomatal conductance in air (531 microbar CO2) is similar in the wild-type and heterozygous mutant but the homozygous mutant has only 41% of the wild-type steady-state conductance under white light and the stomata opens more slowly in response to increased light or reduced CO2 partial pressure, suggesting that the C4 PEPC isoform plays an essential role in stomatal opening. Little difference in delta13C between the heterozygous mutant and wild type, indicating that leakiness, the ratio of CO2 leak rate out of the bundle sheath to the rate of CO2 supply by the C4 cycle, a measure of the coordination of C4 photosynthesis, is not affected by a 60% reduction in PEPC activity | Amaranthus edulis |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Mg2+ | - |
Amaranthus edulis |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Amaranthus edulis | - |
- |
- |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
leaf | - |
Amaranthus edulis | - |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
additional information | - |
PEPC activity is reduced to 42% and 3% of wild type activity in heterozygous and homozygous mutant plants, respectively | Amaranthus edulis |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
phosphoenolpyruvate + CO2 | - |
Amaranthus edulis | phosphate + oxaloacetate | - |
? |
Synonyms | Comment | Organism |
---|---|---|
PEPC | - |
Amaranthus edulis |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
8 | - |
assay at | Amaranthus edulis |