It is not clear what you want, because Pfam has families and clans but not superfamilies.
Don’t know how to download clan alignment or even if it is possible, because individual Pfam families that make up a clan are often very different in terms of length and are not easy to align globally.
To download alignments of individual families in stockholm format, say for PF04828, this would be the link:
https://pfam.xfam.org/family/PF04828/alignment/seed/format?format=stockholm&alnType=seed&order=t&case=l&gaps=default&download=1
For fasta format everything is the same but in the link change stockholm
to fasta
:
https://pfam.xfam.org/family/PF04828/alignment/seed/format?format=fasta&alnType=seed&order=t&case=l&gaps=default&download=1
Changing the PF...
part in the link will download the corresponding family.
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