NCBI Blast

Choose program to use and database to search:

Program Database

Enter here your input data as   

Or load it from disk

Please read about FASTA format description

Set subsequence: From         To


The query sequence is filtered for low complexity regions by default.
Filter Low complexity Mask for lookup table only

Expect    Matrix Perform ungapped alignment

Query Genetic Codes (blastx only)

Database Genetic Codes (tblast[nx] only)

Frame shift penalty for blastx

Limit search to results of Entrez query

Other advanced options:        Show Tax Blast reports


   NCBI-gi      Graphical Overview    Alignment view
Descriptions    Alignments Color schema


Comments and suggestions to:< blast-help@ncbi.nlm.nih.gov >