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Search Pfam

Sequence search

Find Pfam families within your sequence of interest. Paste your protein or DNA sequence into the box below to have it searched for matching Pfam families. More...

 

Protein sequence options

Cut-off
Cut-off
Note that we search only the 20,000 largest Pfam-B families

Batch sequence search

Upload a FASTA-format file containing multiple protein sequences to be searched for matching Pfam families. Results of the search will be returned to you at the email address that you specify. Please check the notes below for the restrictions on uploaded sequence files. More...

Cut-off
Cut-off

Keyword search

Search for keywords within the textual data in the Pfam database. More...

Domain architecture search

Search for sequence architectures using the PfamAlyzer applet. More...


Search for sequence architectures with the specified composition. More...

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Pfam domains

Select a Pfam domain from this list and choose "Includes" or "Does NOT include" to add it to the query.

Architecture must include...

These are the families that must appear in the architecture. Remove unwanted domains by selecting them and pressing "Remove".

Architecture must not include...

These are the families that must not appear in the architecture. Remove unwanted domains by selecting them and pressing "Remove".

Taxonomy search

This form supports two types of query: you can enter a complex boolean expression that precisely defines the species distribution of families that you want, such as "Caenorhabditis elegans AND NOT Homo sapiens", or you can check the "Find domains unique to query term" box and enter a single taxonomic descriptor, e.g. "apicomplexa" to find all Pfam-A families that are unique to that particular level. More...