Activin A in complex with ActRIIb [1NYU] [1NYS]

Follistatin 288 in Complex with Activin A [2B0U]

FSTL3 in Complex with Activin A [3B4V]

Follistatin 288 in Complex with Myostatin [3HH2]

FSTL3 in Complex with Myostatin [3SEK]

Grem2-GDF5 Inhibitory Complex [5HK5]

Apolipoprotein A-IV [3S84]

Apo-GDF8 [5JI1]

PRDC: protein related to DAN and Cerberus [4JPH]

Follistatin 288 in Complex with GDF11 [5JHW]

NBL1: Neuroblastoma Suppressor of Tumorigenicity 1 [4X1J]

Apo-GDF11 [5UHM]