title: [Applied gene technology using biological N2-fixation for an example (author's transl)].
abstract: About biological nitrogen fixation most information on the genetic and enzymatic level is known from investigations with Klebsiella pneumoniae. The gene region for N2-fixation (nif) was transferred from K.pneumoniae to the enterobacterium Escherichia coli. After acquisition of nif E.coli is able to fix nitrogen. Plasmid pRD1 was constructed which carries the nif-region. Using genetic engineering techniques the exact location of nif on pRD1 was determined. Subsequently the nif-region comprising 7 operons with 14 known genes was cloned on a multicopy plasmid vector. The use of the Klebsiella-nif-region in biotechnology is discussed. Difficulties arising in experiments designed to construct N2-fixing plants are mentioned.
mesh_terms: D003001:Cloning, Molecular; D004926:Escherichia coli / Q000378:metabolism; D005818:Genetic Engineering; D007711:Klebsiella pneumoniae / Q000235:genetics / Q000378:metabolism; D009586:Nitrogen Fixation; D010957:Plasmids
vernacular_title: Angewandte Gentechnologie am Beispiel der biologischen N2-Fixierung.