Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(A) Genetic organization of the sequenced 4,500 bp from plasmid pEctD16. (B) Generation of a construct carrying a mutated ectD gene. pRectD1 is a subclone of pEctD16 carrying the orf2-ectD-orf4 region. In pRectD4, the ectD gene was inactivated by the insertion of an Ω cassette, which carries resistance genes for streptomycin and spectinomycin, into its unique Bsp119I site (B).
