There are a number of databases that already have done the prediction on 3'UTR of all protein coding genes, so chances are high that you can search your gene to find potential miRNA targets.
Here are a few database:
MicroSosm at http://www.ebi.ac.uk/enright-srv/microcosm/htdocs/targets/v5/ It is my favrite one. To use it, click Search and then choose the organism of your interest and gene name.
Targetscan at http://www.targetscan.org/. TargetScan put much weight on seed conservation
There are additional databases listed here http://www.exiqon.com/microrna-target-prediction
thank you Mr Ajit Maurya , I know about that database ,but those have given only binding site as complementary to the micro RNA not all the UTR sequence.
The tutorials you all have referred to look like the only work for published genomes. Does anyone know how to find 3'UTRs for non-model organisms? I have an unannotated genome.
I just confirmed something, you could go to NCBI nucleotide to look for your GOI. Then, click on CDS and it gives you complete information about coding DNA with UTRs. These UTRs exactly matched with one shown in UCSC. I just cross checked because it was not mentioned in NCBI, however was logical to think that!
سوال شمارو از دو دیدگاه میشه بررسی کرد اول از لحاظ آماری و بیوانفورماتیک هست، که بفهمیم کدام قسمت های از یک ژن UTR هستند، مسلما برنامه های کامپیوتری زیادی دراین باره هستن که خودت بهتر از من میدونی، که به بهترین هایشان در سایت NCBI میتوانی دسترسی داشته باشی.
راه حل دوم از لحاظ تکنیکی هست که بنده به شما تکنیک RACE را پیشنهاد میکنم.