>TIGR02068 cya_phycin_syn cyanophycin synthetase; InterPro: IPR011810 Cyanophycin is an insoluble storage polymer for carbon, nitrogen, and energy, found in most Cyanobacteria. The polymer has a backbone of L-aspartic acid, with most Asp side chain carboxyl groups attached to L-arginine. The polymer is made by this enzyme, cyanophycin synthetase, and degraded by cyanophycinase. Heterologously expressed cyanophycin synthetase in Escherichia coli produces a closely related, water-soluble polymer with some Arg replaced by Lys. It is unclear whether enzymes that produce soluble cyanophycin-like polymers in vivo in non-Cyanobacterial species should be designated as cyanophycin synthetase itself or as a related enzyme. Cyanophycin synthesis is analogous to polyhydroxyalkanoic acid (PHA) biosynthesis, except that PHA polymers lack nitrogen and may be made under nitrogen-limiting conditions .; GO: 0005524 ATP binding, 0016874 ligase activity, 0009059 macromolecule biosynthetic process.

Probab=95.21  E-value=0.039  Score=34.25  Aligned_cols=45  Identities=36%  Similarity=0.658  Sum_probs=38.1

Q ss_pred             CCCCCCCEEEEEECCCCCCHHHHHHHHHHHHHHCCCCCEEEEEECCCCC
Q ss_conf             7667876799952786667337999999999733898689995088758
Q gi|254780827|r   77 KEESKIPFVVGITGSVAVGKSTFARILCILLQQISNFKVSLITTDGFLF  125 (311)
Q Consensus        77 ~~~~k~PfIIGIAG~~asGKST~Ar~L~~lL~~~~~~~V~lis~DgF~~  125 (311)
T Consensus       483 ~~~grIP-iV~vTGT--NGKTt~~RL~Ahil~~~G-~~vG~T~tDG~Yi  527 (876)
T TIGR02068       483 EDDGRIP-IVAVTGT--NGKTTTTRLVAHILKQTG-KVVGMTTTDGVYI  527 (876)
T ss_pred             CCCCCEE-EEEEECC--CCCHHHHHHHHHHHHHCC-CEEEEEECCCEEE
T ss_conf             7898344-8887268--983557889999998569-8276420376775