What is necessary for the GFP gene to be expressed?

For the green fluorescent protein (GFP) gene to be expressed, a suitable promoter must be present to initiate transcription, ensuring that RNA polymerase can bind and start synthesizing mRNA. Additionally, the necessary transcription factors and regulatory elements must be present to facilitate the transcription process. Finally, the cell must have the appropriate cellular machinery, including ribosomes and tRNA, to translate the mRNA into the GFP protein.