TABLE 1

Strains and plasmids used in this study

Strain or plasmidGenotypeSource or reference
Cyanothece strains
    PCC 7822Wild type15
    ΔhupL mutantCyanothece sp. strain PCC 7822 hupL::KmrThis work
    C-ΔhupL strainComplementation strain of ΔhupLThis work
Plasmids
    Topo-TACloning vector, Apr, lacZ′, mcsInvitrogen
    pRL448Source of Nm/Km cassette, Apr, Kmr16
    phLhupL PCR fragment cloned into Topo-TAThis study
    phL-KNm/Km cassette inserted into EcoRI site of hupLThis study