Cyanophycin: a Cellular Nitrogen Reserve Material
Antonia Herrero and Mireia Burnat
from: The Cell Biology of Cyanobacteria (Edited by: Enrique Flores and Antonia Herrero). Caister Academic Press, U.K. (2014)
Cyanophycin is a biopolymer that serves as a nitrogen cellular reserve and occurs in most, albeit not all cyanobacteria. In this chapter, available information on the enzymes of cyanophycin metabolism and on the expression of the corresponding genes is reviewed. Regulation of cyanophycin production in response to the C to N balance of the cells and, in the case of heterocyst-forming cyanobacteria, the cellular specificity of cyanophycin metabolism are also addressed. Genes encoding cyanophycin metabolism proteins have also been found in bacteria other than cyanobacteria, and the polymer has been considered of potential biotechnological use. Some studies aiming at the production of cyanophycin in different bacteria and eukaryotes for its large-scale accumulation are also summarized read more ...