Antibiotic Selection of AmpR Plasmids: Selects for carbenicillin-resistant transformants, enabling maintenance of AmpR plasmids in E. coli.

Post-Transformation Plating: Recovers and isolates colonies after heat-shock or electroporation of E. coli with carbenicillin selection.

Cloning with Lac-Based Promoters: 2% glucose suppresses basal expression from lac/tac/T7-lac promoters, aiding cloning of toxic or burdensome inserts in E. coli.

Clean Colony Isolation: Carbenicillin reduces ampicillin-type satellite colonies, improving colony picking accuracy from E. coli plates.

Plasmid Maintenance and Passaging: Sustains selective pressure during routine streaking and passaging of plasmid-bearing E. coli.

Colony Screening and PCR Prep: Supports reliable colony growth for downstream colony PCR and sequencing of E. coli clones.

CFU Enumeration Under Selection: Quantifies viable, plasmid-bearing E. coli by colony-forming unit counts on selective plates.

Library and Variant Recovery: Recovers combinatorial or mutagenesis libraries in E. coli while minimizing leaky expression during initial outgrowth.