BL21-CodonPlus strains are engineered to contain extra copies of genes that encode the tRNAs that most frequently limit translation of heterologous proteins in E.coli.

•  Dramatically improves expression when codon bias is a problem
•  RIL strain for AT-rich genomes and RP strain for GC-rich genomes
•  For proteins from all organisms, not just mammalian
•  Overcomes codon bias problems
•  Expresses all rare     E.coli    codons
•  Ideal for difficult protein expression