1. Promoter Region: This is the "on" switch for a gene. Researchers might examine the promoter region to understand what factors turn a gene on or off, and how this regulation might be involved in disease or development.
2. Coding Sequence: This is the part of the gene that contains the instructions for building a protein. Researchers might analyze the coding sequence to identify mutations that could change the protein's structure or function, leading to disease.
3. Regulatory Elements: These are DNA sequences that can influence gene expression. Researchers might focus on regulatory elements to understand how genes are controlled in different cell types or tissues, and how these controls can go awry in disease.
It's important to note that researchers may also look at other features of a gene, such as:
* Introns: Non-coding regions within a gene that are removed during protein synthesis.
* Exons: Coding regions within a gene that are spliced together to form the final mRNA.
* Polyadenylation signal: A sequence that signals the end of a gene and helps with mRNA stability.
The specific parts of a gene that researchers look for depend on their research question.
