Literature summary for 3.2.1.14 extracted from

Guan, Y.; Ramalingam, S.; Nagegowda, D.; Taylor, P.W.; Chye, M.L.
Brassica juncea chitinase BjCHI1 inhibits growth of fungal phytopathogens and agglutinates Gram-negative bacteria (2008), J. Exp. Bot., 59, 3475-3484.

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Activating Compound

Activating Compound	Comment	Organism	Structure
additional information	CHI1 is induced by wounding, methyl jasmonate treatment, Aspergillus niger infection, and caterpillar Pieris rapae feeding	Brassica juncea

Cloned(Commentary)

Cloned (Comment)	Organism
expression of the secreted enzyme in Pichia pastoris	Brassica juncea

Protein Variants

Protein Variants	Comment	Organism
additional information	generation of a transplastomic tobacco line HisBjCHI1-4, the recombinant enzyme in these plants exhibits agglutinating activity, overview	Brassica juncea

Inhibitors

Inhibitors	Comment	Organism	Structure
additional information	free monosaccharides or disaccharides relieve binding activity of BjCHI1	Brassica juncea

Localization

Localization	Comment	Organism	GeneOntology No.	Textmining
extracellular	the enzyme is secreted	Brassica juncea	-	-

Natural Substrates/ Products (Substrates)

Natural Substrates	Organism	Comment (Nat. Sub.)	Natural Products	Comment (Nat. Pro.)	Rev.	Reac.
additional information	Brassica juncea	CHI1 plays a role in the plant's defense system, CHI1 and its derivative with one chitin-binding domain show anti-fungal activities against phytopathogens, i.e. Colletotrichum truncatum, Colletotrichum acutatum, Botrytis cinerea, and Ascochyta rabiei, and inhibit spore germination of Colletotrichum truncatum, overview. BjCHI1 agglutinates Gram-negative bacteria	?	-	?

Organism

Organism	UniProt	Comment	Textmining
Brassica juncea	Q9SQF7	chitinase BjCHI1	-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg]	Specific Activity Maximum [µmol/min/mg]	Comment	Organism
additional information	-	activity in transgenic plant lines	Brassica juncea

Substrates and Products (Substrate)

Substrates	Comment Substrates	Organism	Products	Comment (Products)	Rev.	Reac.
additional information	CHI1 plays a role in the plant's defense system, CHI1 and its derivative with one chitin-binding domain show anti-fungal activities against phytopathogens, i.e. Colletotrichum truncatum, Colletotrichum acutatum, Botrytis cinerea, and Ascochyta rabiei, and inhibit spore germination of Colletotrichum truncatum, overview. BjCHI1 agglutinates Gram-negative bacteria	Brassica juncea	?	-	?

Synonyms

Synonyms	Comment	Organism
BjCHI1	-	Brassica juncea

Temperature Optimum [°C]

Temperature Optimum [°C]	Temperature Optimum Maximum [°C]	Comment	Organism
37	-	assay at	Brassica juncea

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Release 2023.1 (January 2023)