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Aligning multiple protein sequences

A sequence alignment is a way of arranging the primary sequences of a protein to identify regions of similarity that may be a consequence of functional, structural, or evolutionary relationships between the sequences.

  1. Click on the Align link in the header bar to align two or more protein sequences with the Clustal Omega program
  2. Enter either protein sequences in FASTA format or UniProt identifiers into the form field 
  3. Click the ‘Run Align’ button
  4. Advanced users can change the default alignment parameters

The following kinds of UniProt identifiers are supported:

P00750UniProtKB entry
P00750-2UniProtKB entry isoform sequence
A4_HUMANUniProtKB entry name
UPI0000000001UniParc entry

Each UniProtKB entry which contains both a sequence and one or more isoforms of that sequence enables you to align the canonical sequence and its isoforms. All relevant results pages (such as UniProtKB, UniRef, UniParc and tool results) provide an ‘Align’ button to run alignments directly by selecting entries with checkboxes. You can also run alignments from within the Basket.

You can learn more about sequence alignments on the UniProt help page.