I will be working with a specific human gene (let's call it X), for which I am to predict possible transcription factors. For this I want to work with the promoter sequences instead of the actual gene sequences. I am familiar with how to extract sequences in Biopython. I am rather new to coding and was wondering how would I be able to easily extract the promoters for each of the genes I obtain with a e.g. BLAST search to later e.g. do phylogenetic footprinting?
I am at a loss as to where to begin. I will happily take any advice and any guidance to useful resources from which I can learn. The Biopython tutorial/cookbook is rather useful but I have not been able to easily locate an answer to my question.