Anabaena sp. Strain PCC 7120 hetY Gene Influences Heterocyst Development
AUTOR(ES)
Yoon, Ho-Sung
FONTE
American Society for Microbiology
RESUMO
The filamentous cyanobacterium Anabaena (Nostoc) sp. strain PCC 7120 responds to starvation for fixed nitrogen by producing a semiregular pattern of nitrogen-fixing cells called heterocysts. Overexpression of the hetY gene partially suppressed heterocyst formation, resulting in an abnormal heterocyst pattern. Inactivation of hetY increased the time required for heterocyst maturation and caused defects in heterocyst morphology. The 489-bp hetY gene (alr2300), which is adjacent to patS (asl2301), encodes a protein that belongs to a conserved family of bacterial hypothetical proteins that contain an ATP-binding motif.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=262716Documentos Relacionados
- hetL Overexpression Stimulates Heterocyst Formation in Anabaena sp. Strain PCC 7120
- patS Minigenes Inhibit Heterocyst Development of Anabaena sp. Strain PCC 7120
- Anabaena sp. strain PCC 7120 ntcA gene required for growth on nitrate and heterocyst development.
- Nitrate assimilation gene cluster from the heterocyst-forming cyanobacterium Anabaena sp. strain PCC 7120.
- Analysis of a Het- mutation in Anabaena sp. strain PCC 7120 implicates a secondary metabolite in the regulation of heterocyst spacing.