Blue/white test

Piotr

The analysis of lacZ sequence from pZC320:
There is no mutation in lacZ gene. Why the colonys are white??? Reason of white phenotype unknown (this must be chromosomal mutation, transcription supresion or something else) This is very strange... We must make new reporter system...

Preparation of constructs with OmpA protein fusions

Michał K.

Inoculation other separate transformant colonies from plates with ligations: pACYC177+OmpA_alpha and pACYC177+OmpA_omega (liquid LB + kanamycin).

Preparation of alpha-A and omega-A fusions

Michał L.

We have successfully amplified Omega-linker (Fig. 1), but were unable to obtain the other. two PCRs were repeated. New annealing temp.: 48°C. Mg²⁺ concentration elevated to 4 mM.