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Literature summary for 3.1.1.11 extracted from

  • Arancibia, R.A.; Motsenbocker, C.E.
    Pectin methylesterase activity in vivo differs from activity in vitro and enhances polygalacturonase-mediated pectin degradation in tabasco pepper (2006), J. Plant Physiol., 163, 488-496.
    View publication on PubMed

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
pectin + H2O Capsicum frutescens involved in the regulation of the cell wall rigidity, key role in process of fruit ripening methanol + pectate
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?
pectin + H2O Capsicum frutescens ripe var. Easy Pick fruit is characterized by pectin ultradegradation and easy fruit detachment from the calyx, while pectin depolymerization and dissolution in ripe var. Hard Pick fruit is limited, PME activity in vivo is detected only in fruit of the Easy Pick line and is associated with decreased pectin methylesterification, some PME isozymes are apparently inactive in vivo, particularly in green fruit and throughout ripening in the Hard Pick line, limiting polygalacturonase-mediated pectin depolymerization which results in moderately difficult fruit separation from the calyx methanol + pectate
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?

Organism

Organism UniProt Comment Textmining
Capsicum frutescens
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-
-
Capsicum frutescens
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different varieties
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Source Tissue

Source Tissue Comment Organism Textmining
fruit Easy Pick and Hard Pick fruits with different states of pectin polymerization, higher activity in immature than in mature fruits Capsicum frutescens
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fruit ripe var. Easy Pick fruit is characterized by pectin ultradegradation and easy fruit detachment from the calyx, while pectin depolymerization and dissolution in ripe var. Hard Pick fruit is limited, PME activity in vivo is detected only in fruit of the Easy Pick line and is associated with decreased pectin methylesterification, some PME isozymes are apparently inactive in vivo, particularly in green fruit and throughout ripening in the Hard Pick line, overview Capsicum frutescens
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Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
pectin + H2O
-
Capsicum frutescens methanol + pectate
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?
pectin + H2O apple pectin Capsicum frutescens methanol + pectate
-
?
pectin + H2O involved in the regulation of the cell wall rigidity, key role in process of fruit ripening Capsicum frutescens methanol + pectate
-
?
pectin + H2O ripe var. Easy Pick fruit is characterized by pectin ultradegradation and easy fruit detachment from the calyx, while pectin depolymerization and dissolution in ripe var. Hard Pick fruit is limited, PME activity in vivo is detected only in fruit of the Easy Pick line and is associated with decreased pectin methylesterification, some PME isozymes are apparently inactive in vivo, particularly in green fruit and throughout ripening in the Hard Pick line, limiting polygalacturonase-mediated pectin depolymerization which results in moderately difficult fruit separation from the calyx Capsicum frutescens methanol + pectate
-
?

Synonyms

Synonyms Comment Organism
pectin methylesterase
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Capsicum frutescens
PME
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Capsicum frutescens

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
24
-
assay at room temperature Capsicum frutescens

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.5
-
assay at Capsicum frutescens