Table 1. Distribution of sequences in clusters and singletons with their annotations.

	In clusters	In singletons
# Sequences	28 869 663	3 399 026
From SwissProt	519 015	17 478
From TrEMBL	28 350 648	3 381 548
# Sequences with experimental GO annotations	82 672	6 092
From SwissProt	57 391	3 684
From TrEMBL	25 281	2 408
# Sequences with GO annotations	20 556 103	1 506 125
From SwissProt	494 047	14 277
From TrEMBL	20 062 056	1 491 848
# Sequences with PFAM annotation	23 263 014	1 509 339
From SwissProt	487 946	12 111
From TrEMBL	22 775 068	1 497 228
# Sequences with PDB	35 660	1 185

As defined by gene ontology Consortium, experimental GO terms are those associated to evidence codes EXP, IDA, IPI, IMP, IGI, IEP (http://geneontology.org/page/guide-go-evidence-codes)