Part:BBa_K1927001
Usage and biology
This part sequence is collected from the strain K71-77 Esterichia Coli and the gene is called blaCMY-6 class C plasmid – mediated AmpC. These AmpC - lactamases mediate resistance to different antibiotics such as cephalothin, cefazolin, cefoxitin, most penicillins and also - lactamase inhibitor - lactam combinations.(1) They have also the ability to become resistance to several broad spectrum cephalosporins upon therapy because of overexpression of the gene and high mutation rate. The gene can both exist chromosomally and on plasmids. Techniques to identify AmpC - lactamases exist but are not yet optimized for the clinical laboratory. Even though the prevalence of these bacteria is lower compared to other ESBL producing bacteria in the world one should not underestimate its mechanism and it may be both harder to detect and broader in spectrum. This type of gene was also the first to be reported to neutralize penicillin, although it had not been named AmpC in 1940. (1)
Characterization of BB_K1927001
Generation of biobrick BBa_K1927001
This biobricks sequence is collected from a clinical isolate and it’s called blaCMY – 6 plasmid – mediated amp.
This represents a class C enzyme from the broad family of β – lactamases.
The gene was designed in the same way as BBa_K1927000 (see generation of BBa_K1927000) and is designed with specific flanking regions and without promoter for safety reasons.
To confirm that the insert is present we had the plasmid digested with XbaI and PstI along with BBa_K1927000 as a positive control.
The cut insert shows band at 1000bp which confirms the generation of the desired construct.
References:
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