Contiguous Organization of Nitrogenase Genes in a Heterocystous Cyanobacterium
- 1 September 1987
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 85 (1) , 26-29
- https://doi.org/10.1104/pp.85.1.26
Abstract
The organization of the three structural nitrogen fixation (nif) genes that encode nitrogenase (nif K and nif D) and nitrogenase reductase (nif H) have been examined in a number of cyanobacteria. Hybridization of Anabaena 7120 nif gene probes to restriction endonuclease-digested genomic DNA has shown (a) that cyanobacteria incapable of N2 fixation have no regions of DNA with significant homology to the three nif probes, (b) that Pseudanabaena sp., a nonheterocystous cyanobacterium, has a contigous nif KDH gene cluster, and (c) that in contrast with other heterocystous cyanobacteria, Fischerella sp. has a contiguous nif KDH gene cluster.This publication has 10 references indexed in Scilit:
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