Fig. 1From: Optimization of expression, purification and secretion of functional recombinant human growth hormone in Escherichia coli using modified staphylococcal protein a signal peptideThe extension of codon usage frequency throughout the codon optimized gene sequence, CAI; after optimization (A) and before optimization (B). The FOP; after optimization (C) and before optimization (D). Average GC content; after optimization (E) and before optimization (F)Back to article page