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Literature summary for 2.1.1.53 extracted from

  • Sachan, N.; Rogers, D.T.; Yun, K.Y.; Littleton, J.M.; Falcone, D.L.
    Reactive oxygen species regulate alkaloid metabolism in undifferentiated N. tabacum cells (2010), Plant Cell Rep., 29, 437-448.
    View publication on PubMed
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Organism

Organism UniProt Comment Textmining
Nicotiana tabacum
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 cultivar SR1
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Source Tissue

Source Tissue Comment Organism Textmining
callus
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 Nicotiana tabacum
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Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
S-adenosyl-L-methionine + putrescine
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 Nicotiana tabacum S-adenosyl-L-homocysteine + N-methylputrescine
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 ?

Synonyms

Synonyms Comment Organism
PMT
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 Nicotiana tabacum

Expression

Organism Comment Expression
Nicotiana tabacum under normal callus growth conditions in the presence of light and auxin, enzyme promoter activity is strongly repressed down
Nicotiana tabacum treatments with diphenyleneiodinium chloride, Rose Bengal diacetate, and 1,2-dihydroxybenzene-3,5-disulfonic acid do not induce or repress enzyme expression additional information
Nicotiana tabacum dark conditions and the absence of auxin upregulate enzyme promoter activity, with light being dominant to the repressive effects of auxin. Under highly repressive conditions for alkaloid synthesis, including normal culture conditions in the light, both reactive oxygen species scavengers result in significant induction of enzyme promoter activity. Treatment of callus with catalase results in the upregulation of enzyme promoter activity up

General Information

General Information Comment Organism
physiological function putrescine N-methyltransferase is required in nicotinic alkaloid production in Nicotiana sp. Nicotiana tabacum