##gff-version 3
Q28041	UniProtKB	Signal peptide	1	20	.	.	.	Ontology_term=ECO:0000250;evidence=ECO:0000250	
Q28041	UniProtKB	Chain	21	509	.	.	.	ID=PRO_0000024393;Note=Activin receptor type-1	
Q28041	UniProtKB	Topological domain	21	123	.	.	.	Note=Extracellular;Ontology_term=ECO:0000255;evidence=ECO:0000255	
Q28041	UniProtKB	Transmembrane	124	146	.	.	.	Note=Helical;Ontology_term=ECO:0000255;evidence=ECO:0000255	
Q28041	UniProtKB	Topological domain	147	509	.	.	.	Note=Cytoplasmic;Ontology_term=ECO:0000255;evidence=ECO:0000255	
Q28041	UniProtKB	Domain	178	207	.	.	.	Note=GS;Ontology_term=ECO:0000255;evidence=ECO:0000255|PROSITE-ProRule:PRU00585	
Q28041	UniProtKB	Domain	208	502	.	.	.	Note=Protein kinase;Ontology_term=ECO:0000255;evidence=ECO:0000255|PROSITE-ProRule:PRU00159	
Q28041	UniProtKB	Active site	336	336	.	.	.	Note=Proton acceptor;Ontology_term=ECO:0000255,ECO:0000255;evidence=ECO:0000255|PROSITE-ProRule:PRU00159,ECO:0000255|PROSITE-ProRule:PRU10027	
Q28041	UniProtKB	Binding site	214	222	.	.	.	Ontology_term=ECO:0000255;evidence=ECO:0000255|PROSITE-ProRule:PRU00159	
Q28041	UniProtKB	Binding site	235	235	.	.	.	Ontology_term=ECO:0000255;evidence=ECO:0000255|PROSITE-ProRule:PRU00159	
Q28041	UniProtKB	Modified residue	501	501	.	.	.	Note=Phosphoserine;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:Q04771	
Q28041	UniProtKB	Glycosylation	102	102	.	.	.	Note=N-linked (GlcNAc...) asparagine;Ontology_term=ECO:0000255;evidence=ECO:0000255