References:

• Haas J, Park EC, Seed B. Codon usage limitation in the expression of HIV-1 envelope glycoprotein. Curr Biol. 1996; 6 (3):315-24. / pmid: 8805248
• Mamontova AV, Solovyev ID, Savitsky AP, Shakhov AM, Lukyanov KA, Bogdanov AM. Bright GFP with subnanosecond fluorescence lifetime. Sci Rep. 2018; 8 (1):13224. doi: 10.1038/s41598-018-31687-w. / pmid: 30185895