title: Structural Basis of Biological Nitrogen Fixation.
authors.affiliation: Department of Biochemistry, 435 Delaware Street, University of Minnesota, Minneapolis, Minnesota 55455, and Division of Chemistry and Chemical Engineering, 147-75CH, California Institute of Technology, Pasadena, California 91125.
authors.forename: James B.
authors.initials: JB
authors.lastname: Howard
authors.forename: Douglas C.
authors.initials: DC
authors.lastname: Rees