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Literature summary extracted from

  • Pelloux, J.; Rusterucci, C.; Mellerowicz, E.J.
    New insights into pectin methylesterase structure and function (2007), Trends Plant Sci., 12, 267-277.
    View publication on PubMed

Activating Compound

EC Number Activating Compound Comment Organism Structure
3.1.1.11 additional information effects of hormones and stresses on isozyme expression, overview Arabidopsis thaliana

Cloned(Commentary)

EC Number Cloned (Comment) Organism
3.1.1.11 diverse isozymes, DNA sequence anaylsis, phylogenetic tree, PME transcriptomes, overview Arabidopsis thaliana
3.1.1.11 DNA sequence anaylsis, overview Daucus carota
3.1.1.11 DNA sequence anaylsis, phylogenetic tree, overview Oryza sativa
3.1.1.11 DNA sequence anaylsis,phylogenetic tree, PME transcriptomes, overview Populus trichocarpa

Inhibitors

EC Number Inhibitors Comment Organism Structure
3.1.1.11 additional information effects of hormones and stresses on isozyme expression, overview Arabidopsis thaliana

Localization

EC Number Localization Comment Organism GeneOntology No. Textmining
3.1.1.11 cell wall
-
Arabidopsis thaliana 5618
-
3.1.1.11 cell wall
-
Oryza sativa 5618
-
3.1.1.11 cell wall
-
Populus trichocarpa 5618
-
3.1.1.11 cell wall
-
Daucus carota 5618
-

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
3.1.1.11 aluminium a toxic metal in soils that inhibits plant root elongation, can be modulated by PME activity, overexpression of PME activity leads to increases in aluminium content in the plant, which correlates to reductions in the degree of pectin methylesterification, overview Arabidopsis thaliana
3.1.1.11 aluminium a toxic metal in soils that inhibits plant root elongation, can be modulated by PME activity, overexpression of PME activity leads to increases in aluminium content in the plant, which correlates to reductions in the degree of pectin methylesterification, overview Oryza sativa
3.1.1.11 aluminium a toxic metal in soils that inhibits plant root elongation, can be modulated by PME activity, overexpression of PME activity leads to increases in aluminium content in the plant, which correlates to reductions in the degree of pectin methylesterification, overview Populus trichocarpa
3.1.1.11 aluminium a toxic metal in soils that inhibits plant root elongation, can be modulated by PME activity, overexpression of PME activity leads to increases in aluminium content in the plant, which correlates to reductions in the degree of pectin methylesterification, overview Daucus carota

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
3.1.1.11 pectin + H2O Arabidopsis thaliana PME activity gives rise to negatively charged carboxylic groups and protons in the pectic matrix modifying the cell wall charge, apoplasmic pH and potentially the activity of apoplasmic proteins, the enzyme has several physiologic functions in the plant and is involved e.g. in plant growth, xylogenesis, fruit ripening, plant defense, and in general plant-stress signalling, detailed overview, high content of unmethylesterified HGA, generated by high PME activity in cell walls, correlates positively with the susceptibility of plant cultivars to abiotic and biotic stresses, model of PME involvement in plant defences, overview methanol + pectate
-
?
3.1.1.11 pectin + H2O Oryza sativa PME activity gives rise to negatively charged carboxylic groups and protons in the pectic matrix modifying the cell wall charge, apoplasmic pH and potentially the activity of apoplasmic proteins, the enzyme has several physiologic functions in the plant and is involved e.g. in plant growth, xylogenesis, fruit ripening, plant defense, and in general plant-stress signalling, detailed overview, high content of unmethylesterified HGA, generated by high PME activity in cell walls, correlates positively with the susceptibility of plant cultivars to abiotic and biotic stresses, model of PME involvement in plant defences, overview methanol + pectate
-
?
3.1.1.11 pectin + H2O Populus trichocarpa PME activity gives rise to negatively charged carboxylic groups and protons in the pectic matrix modifying the cell wall charge, apoplasmic pH and potentially the activity of apoplasmic proteins, the enzyme has several physiologic functions in the plant and is involved e.g. in plant growth, xylogenesis, fruit ripening, plant defense, and in general plant-stress signalling, detailed overview, high content of unmethylesterified HGA, generated by high PME activity in cell walls, correlates positively with the susceptibility of plant cultivars to abiotic and biotic stresses, model of PME involvement in plant defences, overview methanol + pectate
-
?
3.1.1.11 pectin + H2O Daucus carota PME activity gives rise to negatively charged carboxylic groups and protons in the pectic matrix modifying the cell wall charge, apoplasmic pH and potentially the activity of apoplasmic proteins, the enzyme has several physiologic functions in the plant and is involved e.g. in plant growth, xylogenesis, fruit ripening, plant defense, and in general plant-stress signalling, detailed overview, high content of unmethylesterified HGA, generated by high PME activity in cell walls, correlates positively with the susceptibility of plant cultivars to abiotic and biotic stresses, model of PME involvement in plant defences, overview methanol + pectate
-
?

Organism

EC Number Organism UniProt Comment Textmining
3.1.1.11 Arabidopsis thaliana
-
diverse isozymes, overview
-
3.1.1.11 Daucus carota P83218
-
-
3.1.1.11 Oryza sativa
-
-
-
3.1.1.11 Populus trichocarpa
-
-
-

Posttranslational Modification

EC Number Posttranslational Modification Comment Organism
3.1.1.11 proteolytic modification the enzyme contains a pro-region, role of the PRO region in PME targeting and function Arabidopsis thaliana
3.1.1.11 proteolytic modification the enzyme contains a pro-region, role of the PRO region in PME targeting and function Oryza sativa
3.1.1.11 proteolytic modification the enzyme contains a pro-region, role of the PRO region in PME targeting and function Populus trichocarpa
3.1.1.11 proteolytic modification the enzyme contains a pro-region, role of the PRO region in PME targeting and function Daucus carota

Reaction

EC Number Reaction Comment Organism Reaction ID
3.1.1.11 pectin + n H2O = n methanol + pectate reaction mechanism Oryza sativa
3.1.1.11 pectin + n H2O = n methanol + pectate reaction mechanism Populus trichocarpa
3.1.1.11 pectin + n H2O = n methanol + pectate reaction mechanism, D157, stabilized by a hydrogen bond to R225, performs a nucleophilic attack on the ester bond of the carboxymethyl group of HGA Arabidopsis thaliana
3.1.1.11 pectin + n H2O = n methanol + pectate reaction mechanism, the active site contains two aspartic acid residues D136 and D157 at the centre, which are distinguishing features of aspartyl esterases, two glutamines Q113 and Q135 and one arginine residue R225 Daucus carota

Source Tissue

EC Number Source Tissue Comment Organism Textmining
3.1.1.11 leaf
-
Arabidopsis thaliana
-
3.1.1.11 leaf
-
Oryza sativa
-
3.1.1.11 leaf
-
Populus trichocarpa
-
3.1.1.11 leaf
-
Daucus carota
-
3.1.1.11 stem
-
Arabidopsis thaliana
-
3.1.1.11 stem
-
Oryza sativa
-
3.1.1.11 stem
-
Populus trichocarpa
-
3.1.1.11 stem
-
Daucus carota
-
3.1.1.11 xylem
-
Arabidopsis thaliana
-
3.1.1.11 xylem
-
Oryza sativa
-
3.1.1.11 xylem
-
Populus trichocarpa
-
3.1.1.11 xylem
-
Daucus carota
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.1.1.11 pectin + H2O
-
Arabidopsis thaliana methanol + pectate
-
?
3.1.1.11 pectin + H2O
-
Oryza sativa methanol + pectate
-
?
3.1.1.11 pectin + H2O
-
Populus trichocarpa methanol + pectate
-
?
3.1.1.11 pectin + H2O
-
Daucus carota methanol + pectate
-
?
3.1.1.11 pectin + H2O PME activity gives rise to negatively charged carboxylic groups and protons in the pectic matrix modifying the cell wall charge, apoplasmic pH and potentially the activity of apoplasmic proteins, the enzyme has several physiologic functions in the plant and is involved e.g. in plant growth, xylogenesis, fruit ripening, plant defense, and in general plant-stress signalling, detailed overview, high content of unmethylesterified HGA, generated by high PME activity in cell walls, correlates positively with the susceptibility of plant cultivars to abiotic and biotic stresses, model of PME involvement in plant defences, overview Arabidopsis thaliana methanol + pectate
-
?
3.1.1.11 pectin + H2O PME activity gives rise to negatively charged carboxylic groups and protons in the pectic matrix modifying the cell wall charge, apoplasmic pH and potentially the activity of apoplasmic proteins, the enzyme has several physiologic functions in the plant and is involved e.g. in plant growth, xylogenesis, fruit ripening, plant defense, and in general plant-stress signalling, detailed overview, high content of unmethylesterified HGA, generated by high PME activity in cell walls, correlates positively with the susceptibility of plant cultivars to abiotic and biotic stresses, model of PME involvement in plant defences, overview Oryza sativa methanol + pectate
-
?
3.1.1.11 pectin + H2O PME activity gives rise to negatively charged carboxylic groups and protons in the pectic matrix modifying the cell wall charge, apoplasmic pH and potentially the activity of apoplasmic proteins, the enzyme has several physiologic functions in the plant and is involved e.g. in plant growth, xylogenesis, fruit ripening, plant defense, and in general plant-stress signalling, detailed overview, high content of unmethylesterified HGA, generated by high PME activity in cell walls, correlates positively with the susceptibility of plant cultivars to abiotic and biotic stresses, model of PME involvement in plant defences, overview Populus trichocarpa methanol + pectate
-
?
3.1.1.11 pectin + H2O PME activity gives rise to negatively charged carboxylic groups and protons in the pectic matrix modifying the cell wall charge, apoplasmic pH and potentially the activity of apoplasmic proteins, the enzyme has several physiologic functions in the plant and is involved e.g. in plant growth, xylogenesis, fruit ripening, plant defense, and in general plant-stress signalling, detailed overview, high content of unmethylesterified HGA, generated by high PME activity in cell walls, correlates positively with the susceptibility of plant cultivars to abiotic and biotic stresses, model of PME involvement in plant defences, overview Daucus carota methanol + pectate
-
?

Subunits

EC Number Subunits Comment Organism
3.1.1.11 More three-dimensional structure analysis, overview Daucus carota
3.1.1.11 More primary structures of isozymes, structural and processing motifs, three-dimensional structure analysis, overview Arabidopsis thaliana
3.1.1.11 More structural and processing motifs, three-dimensional structure analysis, overview Oryza sativa
3.1.1.11 More structural and processing motifs, three-dimensional structure analysis, overview Populus trichocarpa

Synonyms

EC Number Synonyms Comment Organism
3.1.1.11 pectin methylesterase
-
Arabidopsis thaliana
3.1.1.11 pectin methylesterase
-
Oryza sativa
3.1.1.11 pectin methylesterase
-
Populus trichocarpa
3.1.1.11 pectin methylesterase
-
Daucus carota
3.1.1.11 PME
-
Arabidopsis thaliana
3.1.1.11 PME
-
Oryza sativa
3.1.1.11 PME
-
Populus trichocarpa
3.1.1.11 PME
-
Daucus carota