How can I compare structures of proteins responsible for dehydration tolerance in plants? For my undergraduate research project, I'm trying to compare the structures of some proteins, specifically transcription factors crucial for dehydration tolerance in plants, in the hope of finding differences that make each protein more or less dehydration tolerant than the others. i want to compare the selected transcription factors at their structural level. structure of one transcription factor from different plant species such as rice,sorghum,maize etc. are considered. ultimately i'm hoping to find a relationship between these structures of proteins and their respective level of dehydration tolerance in each plant.

Is there any database or a site where I can find information regarding this?
Have you explored in PDB?. If you already have a starting sequence, you can use it as input to search with phmmer using PDB as database. Once you have a curated set to analyse, you can visualize and align the structures with VMD, for example.