Note that there are a number of dbxrefs that aren't linked, e.g.
GenomeReviews:AL591688_GR,
KEGG:sme:SMc02793,
HOGENOM:Q92TF2,
BioCyc:SMEL266834:SMC02793-MON,
HAMAP:MF_01062
Pfam:PF03618
Some notes:
Google finds a link for the first:
http://www.genomereviews.ebi.ac.uk/GR/contigview?chr=AL591688_GR but
it is dead. Wayback machine doesn't have an archive.
Kegg and BioCyc links have 2 parameters, a taxon and and id. The NCBI
list of prefixes has just a few of the many organism types that Kegg
has (almost 1000): KEGG_ec, KEGG_hsa, KEGG_mmu, KEGG_rno. It doesn't
have a prefix for "sme".
See http://sharedname.org/page/Issue/ProviderPartitions/NormalizeTaxon
HOGENOM:Q92TF2 and HAMAP:MF_01062 - interesting exercise for the reader
HAMAP:MF_01062 is (it appears) http://expasy.org/unirules/MF_01062
(there's a tag for it in the NCBI list, but no prefix)
No idea why the Pfam isn't linked it's
http://pfam.sanger.ac.uk/family/PF03618 (there's also tag for it in
the NCBI list, but no prefix)
-Alan