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{{Infobox enzyme
| Name = Cyanophycin synthase (L-aspartate-adding)
| EC_number = 6.3.2.29
| CAS_number = 131554-17-1
| IUBMB_EC_number = 6/3/2/29
| GO_code = 
| image = 
| width = 
| caption =
}}
'''Cyanophycin synthase (L-aspartate-adding)''' ({{EC number|6.3.2.29}}, ''CphA'', ''CphA1'', ''CphA2'', ''cyanophycin synthetase'', ''multi-L-arginyl-poly-L-aspartate synthase'') is an [[enzyme]] with system name ''cyanophycin:L-aspartate ligase (ADP-forming)''.<ref>{{cite journal | title = Molecular characterization of the cyanophycin synthetase from <em>Synechocystis</em> sp. strain PCC6308 |author = Aboulmagd, E., Oppermann-Sanio, F.B. and Steinb&uuml;chel, A. |journal = Arch. Microbiol. |year = 2000 |volume = 174 |pages = 297–306 |pmid = 11131019 |issue=5}}</ref><ref>{{cite journal | title = Purification of <em>Synechocystis</em> sp. strain PCC6308 cyanophycin synthetase and its characterization with respect to substrate and primer specificity |author = Aboulmagd, E., Oppermann-Sanio, F.B. and Steinb&uuml;chel, A. |journal = Appl. Environ. Microbiol. |year = 2001 |volume = 67 |pages = 2176–2182 |pmid = 11319097 |doi=10.1128/AEM.67.5.2176-2182.2001 |issue=5}}</ref><ref>{{cite journal | title = Cyanophycin granule polypeptide formation and degradation in the cyanobacterium <em>Aphanocapsa</em> 6308 |author = Allen, M.M., Hutchison, F. and Weathers, P.J. |journal = J. Bacteriol. |year = 1980 |volume = 141 |pages = 687–693 |pmid = 6767688 |issue=2}}</ref><ref>{{cite journal | title = Biosynthesis of the cyanobacterial reserve polymer multi-<small>L</small>-arginyl-poly-<small>L</small>-aspartic acid (cyanophycin): mechanism of the  cyanophycin synthetase reaction studied with synthetic primers |author = Berg, H., Ziegler, K., Piotukh, K., Baier, K., Lockau, W. and Volkmer-Engert, R. |journal = Eur. J. Biochem. |year = 2000 |volume = 267 |pages = 5561–5570 |pmid = 10951215 |issue=17}}</ref><ref>{{cite journal | title = Cyanophycin synthetase-like enzymes of non-cyanobacterial eubacteria: characterization of the polymer produced by a recombinant synthetase of  <em>Desulfitobacterium hafniense</em> |author = Ziegler, K., Deutzmann, R. and Lockau, W. |journal = Z. Naturforsch. [C] |year = 2002 |volume = 57 |pages = 522–529 |pmid = 12132696 |issue=5-6}}</ref><ref>{{cite journal | title = Molecular characterization of cyanophycin synthetase, the enzyme catalyzing the biosynthesis of the cyanobacterial reserve material  multi-<small>L</small>-arginyl-poly-<small>L</small>-aspartate (cyanophycin) |author = Ziegler, K., Diener, A., Herpin, C., Richter, R., Deutzmann, R. and Lockau, W. |journal = Eur. J. Biochem. |year = 1998 |volume = 254 |pages = 154–159 |pmid = 9652408 |doi=10.1046/j.1432-1327.1998.2540154.x}}</ref> This enzyme [[catalysis|catalyses]] the following [[chemical reaction]]

: ATP + [L-Asp(4-L-Arg)]n + L-Asp <math>\rightleftharpoons</math> ADP + [[phosphate]] + [L-Asp(4-L-Arg)]n-L-Asp

This enzyme requires Mg<sup>2+</sup> for activity. 

== References ==
{{reflist}}

== External links ==
* {{MeshName|Cyanophycin+synthase+(L-aspartate-adding)}}

[[Category:EC 6.3.2]]