B-lactamase assay in individual bacteria?

From: isabelle.hautefort (isabelle.hautefort@bbsrc.ac.uk)
Date: Tue Jun 06 2000 - 06:51:37 EST


dear all,
I would like to detect B-lactamse activity in  individual bacterial cells so
that I can control the presence of a (AmpR) plasmid and check if its copy
number is rather similar in every cell. I know that there is a fluorescent
substrate for b-lactamase (CCF2 like). Does anyone of you know whether it works
in a flow cytometer (which channel?) and which supplier sales it? (not
Molecular Probes, at least not yet).
Thanks for your help.
Regards
Isabelle

*********************************************************************
Dr. Isabelle Hautefort
Molecular Microbiology Section
Institute of Food Research
Research Park- Colney
Norwich NR4 7UA- UK

Tel +44(0)1603 255 391
Fax +44(0)1603 458 414
E-mail: isabelle.hautefort@bbsrc.ac.uk
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