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Literature summary for 1.11.1.11 extracted from

  • Liu, J.X.; Feng, K.; Duan, A.Q.; Li, H.; Yang, Q.Q.; Xu, Z.S.; Xiong, A.S.
    Isolation, purification and characterization of an ascorbate peroxidase from celery and overexpression of the AgAPX1 gene enhanced ascorbate content and drought tolerance in Arabidopsis (2019), BMC Plant Biol., 19, 488 .
    View publication on PubMedView publication on EuropePMC

Cloned(Commentary)

Cloned (Comment) Organism
gene AgAPX1, DNA and amino acid sequence determination and analysis, phylogenetic tree, recombinant expression in Escherichia coli strain BL21(DE3), recombinant GFP-tagged enzyme expression in onion epidermal cells for analysis of subcellular localization of AgAPX1. Overexpression of AgAPX1 in Arabidopsis thaliana positively regulates drought tolerance by regulating the stomata aperture. Net photosynthetic rate considerably decreases in the wild-type compared to transgenic lines under drought stress Apium graveolens

Localization

Localization Comment Organism GeneOntology No. Textmining
cytosol
-
Apium graveolens 5829
-

Metals/Ions

Metals/Ions Comment Organism Structure
Fe2+ in the heme group Apium graveolens

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
2 L-ascorbate + H2O2 + 2 H+ Apium graveolens
-
L-ascorbate + L-dehydroascorbate + 2 H2O
-
?

Organism

Organism UniProt Comment Textmining
Apium graveolens
-
cv. Jinnanshiqin
-

Purification (Commentary)

Purification (Comment) Organism
recombinant enzyme from Escherichia coli strain BL21(DE3) Apium graveolens

Source Tissue

Source Tissue Comment Organism Textmining
leaf
-
Apium graveolens
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2 L-ascorbate + H2O2 + 2 H+
-
Apium graveolens L-ascorbate + L-dehydroascorbate + 2 H2O
-
?

Subunits

Subunits Comment Organism
? x * 33160, recombinant enzyme, sequence calculation, x * 34000, recombinant enzyme, SDS-PAGE Apium graveolens

Synonyms

Synonyms Comment Organism
ascorbate peroxidase
-
Apium graveolens

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
55
-
recombinant enzyme Apium graveolens

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
20 85 activity range, profile overview. Inactivation at 90°C, maximum activity at 55°C Apium graveolens

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7
-
recombinant enzyme Apium graveolens

pH Range

pH Minimum pH Maximum Comment Organism
4.5 9.5 activity range, profile overview Apium graveolens

Cofactor

Cofactor Comment Organism Structure
heme
-
Apium graveolens

General Information

General Information Comment Organism
evolution sequence comparison, phylogenetic analysis and tree Apium graveolens
physiological function recombinant overexpression of celery enzyme AgAPX1 in Arabidopsis thaliana positively regulates drought tolerance by regulating the stomata aperture, physiological changes in Arabidopsis leaves exposed to drought stress, phenotype, overview. The AgAPX1 gene seems to be involved in the response of celery to drought stress. The response of the AgAPX1 gene to adversity may be attributed to the conservation of APX sequences among different species Apium graveolens