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Old 09-23-2014, 08:12 PM   #3
Junior Member
Location: US

Join Date: Jun 2014
Posts: 8

Hi, thank you very much. I realized that Psi-blast is an option available through blastp. Seems like Psi-blast is more rigorous that blastX.

I am little bit confused about the difference between blastp and blastx. They both blast against protein databases but the difference is in query sequences, for example protein sequences for blastp. However, in blastx, query sequences are translated nucleotide sequences, which are also protein sequences. So how are these two methods different?

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