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Literature summary for 6.3.2.29 extracted from

  • Berg, H.; Ziegler, K.; Piotukh, K.; Baier, K.; Lockau, W.; Volkmer-Engert, R.
    Biosynthesis of the cyanobacterial reserve polymer multi-L-arginyl-poly-L-aspartic acid (cyanophycin) (2000), Eur. J. Biochem., 267, 5561-5570.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
expression in Escherichia coli BL21(DE3) Trichormus variabilis ATCC 29413

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.015
-
L-Arg 28°C, pH 8.2 Trichormus variabilis ATCC 29413

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
[L-Asp(4-L-Arg)]n + L-Asp + ATP Trichormus variabilis ATCC 29413 a small amount of cyanophycin is required as a primer [L-Asp(4-L-Arg)]n-Asp + ADP + phosphate no formation of AMP, [L-Asp(4-L-Arg)]n-Asp is the substrate for the second reaction catalysed by cyanophycin synthase, EC 6.3.2.30 ?

Organism

Organism UniProt Comment Textmining
Trichormus variabilis ATCC 29413
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Trichormus variabilis ATCC 29413

Reaction

Reaction Comment Organism Reaction ID
ATP + [L-Asp(4-L-Arg)]n + L-Asp = ADP + phosphate + [L-Asp(4-L-Arg)]n-L-Asp i.e. the second reaction of cyanophycin synthesis catalysed by cyanophycin synthase, the first reaction is catalysed by the enzyme's other active centre Trichormus variabilis ATCC 29413

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ATP + [L-Asp(4-L-Arg)]3-L-Asp + L-Arg
-
Trichormus variabilis ATCC 29413 ADP + phosphate + [L-Asp(4-L-Arg)]4 + L-Asp
-
?
ATP + [L-Asp(4-L-Arg)]n + L-Asp [L-Asp(4-L-Arg)]n-Asp is a cyanophycin molecule with a C-terminal L-Asp residue that is not linked to an L-Arg residue via its beta-carboxy group, this intermediate is produced in the first reaction catalysed by cyanophycin synthase Trichormus variabilis ATCC 29413 ADP + phosphate + [L-Asp(4-L-Arg)]n-L-Asp no formation of AMP ?
L-aspartic acid + ATP
-
Trichormus variabilis ATCC 29413 poly-L-aspartic acid + ADP + phosphate
-
?
additional information no product is formed if the peptide primer is blocked at the C-terminus or if L-arginine is solely supplied as substrate Trichormus variabilis ATCC 29413 ?
-
?
[L-Asp(4-L-Arg)]n + L-Asp + ATP a small amount of cyanophycin is required as a primer Trichormus variabilis ATCC 29413 [L-Asp(4-L-Arg)]n-Asp + ADP + phosphate no formation of AMP, [L-Asp(4-L-Arg)]n-Asp is the substrate for the second reaction catalysed by cyanophycin synthase, EC 6.3.2.30 ?

Synonyms

Synonyms Comment Organism
CphA
-
Trichormus variabilis ATCC 29413
cyanophycin synthetase
-
Trichormus variabilis ATCC 29413