EXPRESSION OF GLNA IN THE CYANOBACTERIUM SYNECHOCOCCUS SP STRAIN PCC-7942 IS INITIATED FROM A SINGLE NIF-LIKE PROMOTER UNDER VARIOUS NITROGEN CONDITIONS
R. Cohenkupiec et al., EXPRESSION OF GLNA IN THE CYANOBACTERIUM SYNECHOCOCCUS SP STRAIN PCC-7942 IS INITIATED FROM A SINGLE NIF-LIKE PROMOTER UNDER VARIOUS NITROGEN CONDITIONS, Journal of bacteriology, 175(23), 1993, pp. 7727-7731
The glnA mRNA, encoding glutamine synthetase, is differentially accumu
lated in the cyanobacterium Synechococcus sp. strain PCC 7942 in media
containing different nitrogen sources. With the different nitrogen co
mpounds, transcription of glnA initiated at a single site located -146
nucleotides upstream of the translation start site of the gene. A sim
ilarity to the nif-like promoter of the glnA gene of Anabaena sp. stra
in PCC 7120 and a binding-site sequence for the Synechococcus sp. stra
in PCC 7942 transcription regulator, NtcA, were found upstream of the
transcription initiation site.