The structural nif genes of the cyanobacteria Gloeothece sp. and Calothrix sp. share homology with those of Anabaena sp., but the Gloeothece genes have a different arrangement

T Kallas, M C Rebière, R Rippka, N Tandeau de Marsac
1983 Journal of Bacteriology  
doi:10.1128/jb.155.1.427-431.1983 fatcat:ej3o5sq4h5ab7k2nvon6zzkdru