PR:000000015	follistatin	activin-binding protein|FS|FST		participates_in	GO:0032926	negative regulation of activin receptor signaling pathway			PIRSF:PIRSF002278	ISS		PIRSF:PIRSF002278	PIRSF:PIRSF002278|UniProtKB:P19883|UniProtKB:P47931	20080301	PRO:CNA	
PR:000000015	follistatin	activin-binding protein|FS|FST		has_part	Pfam:PF00050	Kazal-type serine protease inhibitor domain			PIRSF:PIRSF002278	ISS		PIRSF:PIRSF002278	PIRSF:PIRSF002278|UniProtKB:P19883|UniProtKB:P47931	20080301	PRO:CNA	
PR:000036412	follistatin isoform 1, signal peptide removed glycosylated form (human)	hFST/iso:1/SigPep-/GlycoRes+|PRO_0000010103, MOD:00693|UniProtKB:P19883-1, 30-344, MOD:00693		located_in	GO:0005615	extracellular space			PMID:16150905	IDA	NCBITaxon:9606		UniProtKB:P19883-1	20080301	PRO:CNA	
PR:000036414	follistatin isoform 1 cleaved and N-glycosylated 2 (human)	hFST/iso:1/ClvNGlyco:2|UniProtKB:P19883-1, 30-332, Asn-124/Asn-288, MOD:00160		located_in	GO:0005615	extracellular space			PMID:16150905	IDA	NCBITaxon:9606		UniProtKB:P19883-1	20080301	PRO:CNA	
PR:000036415	follistatin isoform 2, signal peptide removed N-glycosylated 1 (human)	hFST/iso:2/SigPep-/NGlyco:1|UniProtKB:P19883-2, 30-317, Asn-124/Asn-288, MOD:00160		participates_in	GO:0032926	negative regulation of activin receptor signaling pathway			PMID:1906804	IDA	NCBITaxon:9606		UniProtKB:P19883-2	20080301	PRO:CNA	
PR:000036415	follistatin isoform 2, signal peptide removed N-glycosylated 1 (human)	hFST/iso:2/SigPep-/NGlyco:1|UniProtKB:P19883-2, 30-317, Asn-124/Asn-288, MOD:00160		located_in	GO:0005615	extracellular space			PMID:16150905	IDA	NCBITaxon:9606		UniProtKB:P19883-2	20080301	PRO:CNA	
PR:P19883-1	follistatin isoform 1 (human)	follistatin isoform FS-315 (human)|follistatin isoform FS315 (human)|hFST/iso:1		participates_in	GO:0007275	multicellular organism development			PMID:9828086	TAS	NCBITaxon:9606		UniProtKB:P19883-1	20080301	PRO:CNA