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Literature summary for 6.3.1.2 extracted from

  • Brestic, M.; Zivcak, M.; Olsovska, K.; Shao, H.B.; Kalaji, H.M.; Allakhverdiev, S.I.
    Reduced glutamine synthetase activity plays a role in control of photosynthetic responses to high light in barley leaves (2014), Plant Physiol. Biochem., 81, 74-83 .
    View publication on PubMed
Search for more literature for 6.3.1.2

Protein Variants

Protein Variants Comment Organism
additional information determination and photosynthetic responses of GS2 mutant of barley with reduced activity of chloroplastic glutamine synthetase, overview. The mutation of the enzyme not directly associated with conversion of light energy leads to significant modifications of structure and function of photosystems Hordeum vulgare

Localization

Localization Comment Organism GeneOntology No. Textmining
chloroplast
-
 Hordeum vulgare 9507
-

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ required Hordeum vulgare

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
ATP + L-glutamate + NH3 Hordeum vulgare
-
 ADP + phosphate + L-glutamine
-
 ?

Organism

Organism UniProt Comment Textmining
Hordeum vulgare
-
 cv. Kompakt
-

Source Tissue

Source Tissue Comment Organism Textmining
leaf
-
 Hordeum vulgare
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ATP + L-glutamate + NH3
-
 Hordeum vulgare ADP + phosphate + L-glutamine
-
 ?

Synonyms

Synonyms Comment Organism
GS2
-
 Hordeum vulgare

Cofactor

Cofactor Comment Organism Structure
ATP
-
 Hordeum vulgare

General Information

General Information Comment Organism
physiological function the rate-limiting step in photorespiration is the reassimilation of ammonia catalyzed by chloroplastic glutamine synthetase isozyme 2 (GS2). In plants, GS2 together with ferredoxin-dependent glutamate synthase (Fd-GOGAT) plays a major role in re-assimilation of ammonium liberated in mitochondria by the glycine decarboxylase, in the pathway known as glutamine synthetase/glutamate synthase (GS/GOGAT) cycle in chloroplasts. The product of this cycle, glutamate, is required for one of the peroxisomal transamination reactions Hordeum vulgare