GFP

• wtGFP on NCBI

The fluorophore is tyrosine Y66 and the surrounding amino acids of Ser(65)-Tyr(66)-Gly(67) are also critical [1].

GFP Variants

• GFPmut3b - S65G, S72A
• GFPmut3* - mutations from wt: S2R,S65G,S72A
  • This is GFPmut3b[2] with a degredation tag attached + an accidental mutation at position 2 that doesn't affect function according to the authors.[3]
• Emerald
• EGFP F64L, S65T + optimized for human codons [1]

References

1. Li X, Zhang G, Ngo N, Zhao X, Kain SR, and Huang CC. Deletions of the Aequorea victoria green fluorescent protein define the minimal domain required for fluorescence. J Biol Chem. 1997 Nov 7;272(45):28545-9. DOI:10.1074/jbc.272.45.28545 |
2. Cormack BP, Valdivia RH, and Falkow S. FACS-optimized mutants of the green fluorescent protein (GFP). Gene. 1996;173(1 Spec No):33-8. DOI:10.1016/0378-1119(95)00685-0 |
4. Andersen JB, Sternberg C, Poulsen LK, Bjorn SP, Givskov M, and Molin S. New unstable variants of green fluorescent protein for studies of transient gene expression in bacteria. Appl Environ Microbiol. 1998 Jun;64(6):2240-6. DOI:10.1128/AEM.64.6.2240-2246.1998 |

Molecular Biology and Muation of Green Fluorescent Protein (Book Chapter, Zacharias & Tsien)