>5nh3_H mol:protein length:121 anti-human ActRIIB mAb BYM338 Fv heavy-chain
QVQLVQSGAEVKKPGASVKVSCKASGYTFTSSYINWVRQAPGQGLEWMGTINPVSGSTSYAQKFQGRVTMTRDTSISTAYMELSRLRSDDTAVYYCARGGWFDYWGQGTLVTVSSHHHHHH