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Literature summary for 3.1.1.11 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

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

Cloned(Commentary)

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

Inhibitors

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

Localization

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

Metals/Ions

Metals/Ions Comment Organism Structure
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
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
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
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)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
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
-
?
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
-
?
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
-
?
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

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

Posttranslational Modification

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

Reaction

Reaction Comment Organism Reaction ID
pectin + n H2O = n methanol + pectate reaction mechanism Oryza sativa
pectin + n H2O = n methanol + pectate reaction mechanism Populus trichocarpa
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
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

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

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
pectin + H2O
-
Arabidopsis thaliana methanol + pectate
-
?
pectin + H2O
-
Oryza sativa methanol + pectate
-
?
pectin + H2O
-
Populus trichocarpa methanol + pectate
-
?
pectin + H2O
-
Daucus carota methanol + pectate
-
?
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
-
?
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
-
?
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
-
?
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

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

Synonyms

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