PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 24306501-3 1994 The sensitivities of PEP carboxylase to the allosteric effectors malate and glucose-6-phosphate were markedly different between C3 and C4 species. malic acid 65-71 phosphoenolpyruvate carboxylase 2 Zea mays 21-24 16664876-2 1986 In addition, sensitivity to effectors of PEP carboxylase activity was significantly altered; e.g. malate inhibition was reduced and glucose-6-phosphate activation was increased. malic acid 98-104 phosphoenolpyruvate carboxylase 2 Zea mays 41-44 2334435-8 1990 It thus appears that the quaternary structure (oligomeric state) of maize PEP carboxylase can be regulated by the naturally occurring effector molecules Mg-PEP and malate which in turn can control the enzyme"s activity. malic acid 164-170 phosphoenolpyruvate carboxylase 2 Zea mays 74-77 16667297-1 1990 Malate has been noted to be a ;mixed" inhibitor of phosphoenolpyruvate (PEP) carboxylase. malic acid 0-6 phosphoenolpyruvate carboxylase 2 Zea mays 72-75 16667297-5 1990 The ability of high concentrations of PEP to convert PEPC from a form readily inhibited by malate to one resistant to malate inhibition has been previously demonstrated and we attribute the cooperativity shown at pH 8 to this response to high levels of PEP. malic acid 91-97 phosphoenolpyruvate carboxylase 2 Zea mays 38-41 16667297-5 1990 The ability of high concentrations of PEP to convert PEPC from a form readily inhibited by malate to one resistant to malate inhibition has been previously demonstrated and we attribute the cooperativity shown at pH 8 to this response to high levels of PEP. malic acid 91-97 phosphoenolpyruvate carboxylase 2 Zea mays 53-56 16667297-5 1990 The ability of high concentrations of PEP to convert PEPC from a form readily inhibited by malate to one resistant to malate inhibition has been previously demonstrated and we attribute the cooperativity shown at pH 8 to this response to high levels of PEP. malic acid 118-124 phosphoenolpyruvate carboxylase 2 Zea mays 38-41 16667297-5 1990 The ability of high concentrations of PEP to convert PEPC from a form readily inhibited by malate to one resistant to malate inhibition has been previously demonstrated and we attribute the cooperativity shown at pH 8 to this response to high levels of PEP. malic acid 118-124 phosphoenolpyruvate carboxylase 2 Zea mays 53-56 2122805-5 1990 When the enzyme is incubated at pH 7 with 5 mM malate (a treatment known to cause dimerization) subsequent assay at saturating levels of MgPEP completely restores activity while assay at less than Km MgPEP produces greater than 99% inhibition of the same sample, showing that high PEP concentration has reconverted the PEPC to the malate-resistant tetramer. malic acid 47-53 phosphoenolpyruvate carboxylase 2 Zea mays 139-142 2122805-5 1990 When the enzyme is incubated at pH 7 with 5 mM malate (a treatment known to cause dimerization) subsequent assay at saturating levels of MgPEP completely restores activity while assay at less than Km MgPEP produces greater than 99% inhibition of the same sample, showing that high PEP concentration has reconverted the PEPC to the malate-resistant tetramer. malic acid 331-337 phosphoenolpyruvate carboxylase 2 Zea mays 139-142 16665209-8 1987 Although photosynthetically inactive pools of malate, asparate, and alanine could mask real changes in levels of the photosynthetically active pools of these compounds, the apparent levels of these compounds and the total amount of intermediates in the C(4) cycle (malate, aspartate, pyruvate, PEP, and alanine) increased with increasing Ci. malic acid 46-52 phosphoenolpyruvate carboxylase 2 Zea mays 294-297 24414104-6 1978 The pH sensitivity of PEP carboxylase is such that its activity, and thus the rate of malate synthesis, may be enhanced by an increase in cytoplasmic pH accompanying FC-induced H(+) excretion. malic acid 86-92 phosphoenolpyruvate carboxylase 2 Zea mays 22-25 24414104-1 1978 The phytotoxin fusicoccin (FC) causes rapid synthesis of malate in coleoptile tissues, presumably via phosphoenolpyruvate (PEP) carboxylase coupled with malate dehydrogenase. malic acid 57-63 phosphoenolpyruvate carboxylase 2 Zea mays 123-126 33016576-6 2021 Flux from malate via pyruvate to PEP remained low, commensurate with the low NADP-malic enzyme activity observed in the transgenic lines. malic acid 10-16 phosphoenolpyruvate carboxylase 2 Zea mays 33-36