Plasmid Selection and Maintenance: Selects and maintains bla (beta-lactam) resistance plasmids in Escherichia coli using 100 µg/mL carbenicillin.

Bacterial Transformation Screening: Recovers and isolates transformants on selective LB agar after heat shock or electroporation of Escherichia coli.

Colony Isolation and Purification: Streaks single colonies to ensure clonal, antibiotic-resistant cultures of Escherichia coli.

Colony PCR and Insert Screening: Picks antibiotic-selected colonies for PCR verification of inserts or edits.

Recombinant Protein Workflow Support: Maintains expression strains harboring bla-marked vectors prior to induction in liquid culture.

Library Construction and Screening: Selects cDNA/genomic libraries and variant libraries maintained on beta-lactam markers.

Blue-White Screening (with supplements): Supports alpha-complementation screening on carbenicillin plates when supplemented with X-Gal and IPTG.

CFU Enumeration Under Selection: Quantifies viable antibiotic-resistant cells after cloning, mutagenesis, or selection steps.

Plasmid Transfer Selection: Selects transconjugants or transductants carrying bla-marked plasmids in Escherichia coli.

Strain Archiving and Stability Checks: Verifies plasmid retention and phenotype stability by restreaking from glycerol stocks under carbenicillin selection.