Can someone find the transcription factors for these genetic mutations

PKU - protein = phenylalanine hydroxylase

Cri du chat - If you can find the protein for this too that would be great. I just know that the mutation is occurring in gene 15.3 in chromosome 5, also I am unable to find how many base pairs this is, if you are able to find this please let me know.

all of this information would be greatly appreciated, if you have any additional information on these genetic mutations please leave your knowledge.

Thank you very much.