Cyanophycin synthase (
L-aspartate-adding) (, ''CphA'', ''CphA1'', ''CphA2'', ''cyanophycin synthetase'', ''multi-L-arginyl-poly-L-aspartate synthase'') is an
enzyme
Enzymes () are proteins that act as biological catalysts by accelerating chemical reactions. The molecules upon which enzymes may act are called substrate (chemistry), substrates, and the enzyme converts the substrates into different molecule ...
with
systematic name A systematic name is a name given in a systematic way to one unique group, organism, object or chemical substance, out of a specific population or collection. Systematic names are usually part of a nomenclature.
A semisystematic name or semitrivial ...
''cyanophycin:L-aspartate ligase (ADP-forming)''.
This enzyme
catalyses the following
chemical reaction
A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and break ...
: ATP +
-Asp(4-L-Arg) + L-Asp
ADP +
phosphate
In chemistry, a phosphate is an anion, salt, functional group or ester derived from a phosphoric acid. It most commonly means orthophosphate, a derivative of orthophosphoric acid .
The phosphate or orthophosphate ion is derived from phosph ...
+
-Asp(4-L-Arg)-L-Asp
This enzyme requires Mg
2+ for activity. All enzymes known to have this activity also catalyze the addition of arginine, i.e.
cyanophycin synthase (L-arginine-adding)
Cyanophycin synthase (L-arginine-adding) (, ''CphA'', ''CphA1'', ''CphA2'', ''cyanophycin synthetase'', ''multi-L-arginyl-poly-L-aspartate synthase'') is an enzyme with systematic name ''cyanophycin:L-arginine ligase (ADP-forming)''. This enzyme ...
activity. It is structurally similar to
Muramyl ligase
The bacterial cell wall provides strength and rigidity to counteract internal osmotic pressure, and protection against the environment. The peptidoglycan layer gives the cell wall its strength, and helps maintain the overall shape of the cell. The ...
s.
References
External links
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EC 6.3.2