Deletion of CPP1 in C.
albicans. (A) Deletion strategy and restriction map of the
CPP1 gene. PCR with the divergent oligodeoxynucleotides
O24 and O25 was used to delete the PTP-active site region (ptp) of
CPP1. A hisG-URA3-hisG cassette was then
inserted. Restriction sites are as follows: B, BamHI;
Bg, BglII; C, ClaI; H,
HindIII; Nc, NcoI; Ns,
NsiI; Sp, SpeI. (B) Southern blot
analysis of CPP1 disruptions with a
HindIII-SpeI CPP1 fragment
as a probe. Genomic DNA samples were digested with
HindIII from the following strains: lane 1, CAI4
(ura3/ura3 CPP1/CPP1); lane 2, CP29 (ura3/ura3
CPP1/cpp1Δ::hisG-URA3-hisG); lane 3,
CP29–1(ura3/ura3
CPP1/cpp1Δ::hisG): lane 4, CP29–1-7
(ura3/ura3
cpp1Δ::hisG-URA3hisG/cpp1Δ::hisG),
and lane 5, CP29–1-7 L4 (ura3/ura3
cpp1Δ::hisG/ cpp1Δ::hisG).