7MRZ | pdb_00007mrz

Structure of GDF11 bound to fused ActRIIB-ECD and Alk4-ECD with Anti-ActRIIB Fab fragment

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B [auth C]	SCOP2B Superfamily	Snake toxin-like	8042166	3000545	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Cystine-knot cytokines	8089948	3000846	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
D [auth Y]	Peptidase_M4,Peptidase_M4_C	e7mrzY1	A: a/b three-layered sandwiches	X: RNase A-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Peptidase_M4,Peptidase_M4_C	ECOD (v294.1)
C [auth X]	Peptidase_M4,Peptidase_M4_C	e7mrzX1	A: a/b three-layered sandwiches	X: RNase A-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Peptidase_M4,Peptidase_M4_C	ECOD (v294.1)
B [auth C]	Peptidase_M4,Peptidase_M4_C	e7mrzC1	A: a/b three-layered sandwiches	X: RNase A-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Peptidase_M4,Peptidase_M4_C	ECOD (v294.1)
A	Peptidase_M4,Peptidase_M4_C	e7mrzA1	A: a/b three-layered sandwiches	X: RNase A-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Peptidase_M4,Peptidase_M4_C	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
D [auth Y]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
C [auth X]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
B [auth C]	2.10.60.10	Mainly Beta	Ribbon	CD59	CD59	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
D [auth Y]	Light Chain	IGKV4	Kappa	activin receptor type-2b,activin receptor type-1b	SAbDab (2026-04-17)
C [auth X]	Heavy Chain	IGHV4	-	activin receptor type-2b,activin receptor type-1b	SAbDab (2026-04-17)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B [auth C]	PF01064	Activin types I and II receptor domain (Activin_recp)	Activin types I and II receptor domain	This Pfam entry consists of both TGF-beta receptor types. This is an alignment of the hydrophilic cysteine-rich ligand-binding domains, Both receptor types, (type I and II) posses a 9 amino acid cysteine box, with the the consensus CCX{4-5}CN. The ty ...	This Pfam entry consists of both TGF-beta receptor types. This is an alignment of the hydrophilic cysteine-rich ligand-binding domains, Both receptor types, (type I and II) posses a 9 amino acid cysteine box, with the the consensus CCX{4-5}CN. The type I receptors also possess 7 extracellular residues preceding the cysteine box.	Domain
A	PF00019	Transforming growth factor beta like domain (TGF_beta)	Transforming growth factor beta like domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
D [auth Y]	Fab Light Chain	-	-	-
C [auth X]	Fab Heavy Chain	-	-	-
B [auth C]	Activin receptor type-2B,Activin receptor type-1B	protein-containing complex binding activin binding binding protein binding inhibin binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding protein-containing complex binding activin binding binding protein binding inhibin binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding protein serine/threonine kinase activity molecular transducer activity catalytic activity, acting on a protein kinase activity protein kinase activity signaling receptor activity activin receptor activity transferase activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups transmembrane receptor protein serine/threonine kinase activity transmembrane receptor protein kinase activity transmembrane signaling receptor activity catalytic activity SMAD binding I-SMAD binding ubiquitin protein ligase binding ubiquitin-like protein ligase binding enzyme binding activin receptor activity, type I cation binding metal ion binding enzyme regulator activity kinase activator activity enzyme activator activity molecular function activator activity molecular function regulator activity kinase regulator activity activin receptor activity, type II protein serine/threonine/tyrosine kinase activity growth factor binding	cellular response to stimulus regulation of biological process activin receptor signaling pathway cell surface receptor protein serine/threonine kinase signaling pathway regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling biological regulation cell communication nodal signaling pathway cellular process transforming growth factor beta receptor superfamily signaling pathway signal transduction cellular response to stimulus regulation of biological process activin receptor signaling pathway cell surface receptor protein serine/threonine kinase signaling pathway regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling biological regulation cell communication nodal signaling pathway cellular process transforming growth factor beta receptor superfamily signaling pathway signal transduction enzyme-linked receptor protein signaling pathway regulation of biosynthetic process positive regulation of biological process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process positive regulation of macromolecule biosynthetic process regulation of gene expression positive regulation of metabolic process biosynthetic process positive regulation of gene expression positive regulation of biosynthetic process regulation of macromolecule biosynthetic process metabolic process positive regulation of macromolecule metabolic process macromolecule metabolic process regulation of metabolic process positive regulation of cellular process developmental process multicellular organismal process epithelium development epidermis development molting cycle process hair cycle animal organ development tissue development skin development skin epidermis development hair follicle development molting cycle anatomical structure development hair cycle process regulation of growth regulation of cellular component organization negative regulation of biological process growth negative regulation of cell growth regulation of cell growth cell growth cellular component organization negative regulation of growth negative regulation of cellular process cellular component organization or biogenesis cell death extrinsic apoptotic signaling pathway apoptotic signaling pathway apoptotic process programmed cell death protein phosphorylation phosphorylation primary metabolic process macromolecule modification peptidyl-amino acid modification phosphate-containing compound metabolic process peptidyl-threonine modification protein metabolic process protein modification process phosphorus metabolic process peptidyl-threonine phosphorylation multicellular organism development embryo development ending in birth or egg hatching chordate embryonic development embryo development in utero embryonic development protein autophosphorylation RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process nucleobase-containing compound biosynthetic process nucleic acid metabolic process regulation of DNA-templated transcription cellular developmental process regulation of developmental process homeostatic process cell development regulation of cell differentiation regulation of cell development positive regulation of developmental process positive regulation of cell differentiation cell differentiation regulation of immune system process regulation of multicellular organismal process myeloid cell homeostasis erythrocyte homeostasis regulation of multicellular organismal development hemopoiesis regulation of myeloid cell differentiation erythrocyte differentiation regulation of erythrocyte differentiation positive regulation of erythrocyte differentiation multicellular organismal-level homeostasis myeloid cell differentiation immune system process positive regulation of myeloid cell differentiation regulation of hemopoiesis homeostasis of number of cells cellular response to endogenous stimulus cellular response to growth factor stimulus response to endogenous stimulus response to growth factor nervous system development system development mitotic cell cycle process cell cycle phase transition cell cycle G1/S transition of mitotic cell cycle cell cycle G1/S phase transition mitotic cell cycle mitotic cell cycle phase transition cell cycle process multi-multicellular organism process positive regulation of locomotion regulation of cell motility regulation of trophoblast cell migration regulation of reproductive process reproductive process positive regulation of cell migration ameboidal-type cell migration positive regulation of cell motility regulation of cell migration cell migration cell motility female pregnancy embryo implantation locomotion positive regulation of reproductive process trophoblast cell migration positive regulation of trophoblast cell migration regulation of locomotion positive regulation of multicellular organismal process multi-organism reproductive process negative regulation of developmental process negative regulation of cell differentiation negative regulation of metabolic process negative regulation of gene expression negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process negative regulation of macromolecule metabolic process ossification negative regulation of multicellular organismal process regulation of ossification negative regulation of ossification positive regulation of activin receptor signaling pathway positive regulation of cell communication positive regulation of signal transduction regulation of transmembrane receptor protein serine/threonine kinase signaling pathway regulation of signal transduction positive regulation of response to stimulus regulation of signaling positive regulation of transmembrane receptor protein serine/threonine kinase signaling pathway regulation of response to stimulus regulation of cell communication regulation of activin receptor signaling pathway positive regulation of signaling intracellular iron ion homeostasis inorganic ion homeostasis cellular homeostasis chemical homeostasis intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis pattern specification process heart development circulatory system development endothelial cell differentiation endothelium development lymphatic endothelial cell differentiation epithelial cell differentiation vasculature development lymph vessel development digestive system development foregut morphogenesis tube development embryonic morphogenesis digestive tract development anatomical structure morphogenesis tube morphogenesis embryonic foregut morphogenesis digestive tract morphogenesis mesoderm development artery development blood vessel development regulation of biomineral tissue development regulation of bone mineralization positive regulation of ossification positive regulation of biomineral tissue development biomineral tissue development bone mineralization positive regulation of bone mineralization negative regulation of adipose tissue development connective tissue development adipose tissue development regulation of adipose tissue development skeletal system development skeletal system morphogenesis animal organ morphogenesis negative regulation of RNA biosynthetic process transcription by RNA polymerase II negative regulation of nucleobase-containing compound metabolic process regulation of transcription by RNA polymerase II negative regulation of DNA-templated transcription negative regulation of transcription by RNA polymerase II negative regulation of RNA metabolic process kidney development renal system development establishment of protein localization nitrogen compound transport transport hormone secretion protein localization to extracellular region localization peptide secretion secretion by cell signal release regulation of biological quality intracellular protein localization secretion regulation of hormone levels establishment of protein localization to extracellular region cell-cell signaling export from cell protein secretion establishment of localization peptide transport protein transport peptide hormone secretion macromolecule localization hormone transport insulin secretion sensory organ development retina vasculature development in camera-type eye eye development retina development in camera-type eye visual system development camera-type eye development sensory system development cellular response to BMP stimulus response to BMP BMP signaling pathway gastrulation with mouth forming second gastrulation developmental growth organ growth odontogenesis of dentin-containing tooth odontogenesis lymphangiogenesis anatomical structure formation involved in morphogenesis lymph vessel morphogenesis respiratory tube development lung development respiratory system development response to hexose response to monosaccharide response to carbohydrate response to glucose response to chemical response to oxygen-containing compound determination of bilateral symmetry determination of left/right symmetry left/right pattern formation regionalization specification of symmetry pancreas development blood vessel remodeling tissue remodeling regulation of osteoblast differentiation osteoblast differentiation positive regulation of osteoblast differentiation venous blood vessel development negative regulation of cold-induced thermogenesis adaptive thermogenesis regulation of cold-induced thermogenesis cold-induced thermogenesis temperature homeostasis post-embryonic development anterior/posterior pattern specification roof of mouth development	cell surface cellular anatomical structure cell periphery plasma membrane membrane protein-containing complex signaling receptor complex catalytic complex plasma membrane protein complex membrane protein complex transferase complex protein kinase complex transferase complex, transferring phosphorus-containing groups serine/threonine protein kinase complex cell surface cellular anatomical structure cell periphery plasma membrane membrane protein-containing complex signaling receptor complex catalytic complex plasma membrane protein complex membrane protein complex transferase complex protein kinase complex transferase complex, transferring phosphorus-containing groups serine/threonine protein kinase complex plasma membrane signaling receptor complex activin receptor complex intracellular anatomical structure cytoplasm
A	Growth/differentiation factor 11	molecular function activator activity molecular function regulator activity signaling receptor regulator activity growth factor activity receptor ligand activity signaling receptor activator activity cytokine activity	cellular response to stimulus positive regulation of cell communication cell surface receptor protein serine/threonine kinase signaling pathway regulation of cellular process positive regulation of signal transduction response to stimulus signaling regulation of transmembrane receptor protein serine/threonine kinase signaling pathway positive regulation of biological process regulation of signal transduction intracellular signal transduction cell communication positive regulation of response to stimulus regulation of intracellular signal transduction intracellular signaling cassette cellular response to stimulus positive regulation of cell communication cell surface receptor protein serine/threonine kinase signaling pathway regulation of cellular process positive regulation of signal transduction response to stimulus signaling regulation of transmembrane receptor protein serine/threonine kinase signaling pathway positive regulation of biological process regulation of signal transduction intracellular signal transduction cell communication positive regulation of response to stimulus regulation of intracellular signal transduction intracellular signaling cassette signal transduction enzyme-linked receptor protein signaling pathway positive regulation of cellular process regulation of biological process regulation of signaling cell surface receptor signaling pathway biological regulation positive regulation of intracellular signal transduction positive regulation of transmembrane receptor protein serine/threonine kinase signaling pathway SMAD protein signal transduction regulation of response to stimulus regulation of cell communication cellular process regulation of SMAD protein signal transduction positive regulation of SMAD protein signal transduction positive regulation of signaling developmental process anatomical structure development tissue development mesoderm development multicellular organism development multicellular organismal process skeletal system development system development cell population proliferation activin receptor signaling pathway transforming growth factor beta receptor superfamily signaling pathway cellular developmental process cell development epithelial cell differentiation pancreas development cell differentiation endocrine pancreas development cell maturation type B pancreatic cell differentiation epithelium development type B pancreatic cell maturation endocrine system development animal organ development developmental maturation type B pancreatic cell development epithelial cell development anatomical structure maturation epithelial cell maturation enteroendocrine cell differentiation regulation of developmental process sensory organ development negative regulation of biological process retina development in camera-type eye visual system development neural retina development regulation of cell differentiation central nervous system neuron differentiation neurogenesis regulation of amacrine cell differentiation amacrine cell differentiation neuron differentiation negative regulation of cellular process negative regulation of cell differentiation sensory system development eye development negative regulation of developmental process negative regulation of amacrine cell differentiation nervous system development generation of neurons central nervous system development camera-type eye development negative regulation of neuron differentiation regulation of neuron differentiation ureteric bud development mesonephric epithelium development kidney epithelium development mesonephros development tube development renal system development kidney development mesonephric tubule development negative regulation of cell population proliferation regulation of cell population proliferation camera-type eye morphogenesis eye morphogenesis anatomical structure morphogenesis sensory organ morphogenesis animal organ morphogenesis metanephros development roof of mouth development anterior/posterior pattern specification pattern specification process regionalization spinal cord development spinal cord anterior/posterior patterning spinal cord patterning cellular response to growth factor stimulus cellular response to transforming growth factor beta stimulus response to endogenous stimulus cellular response to endogenous stimulus response to transforming growth factor beta transforming growth factor beta receptor signaling pathway response to growth factor	protein-containing complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B [auth C]	IPR000472	Activin types I and II receptor domain	Domain
B [auth C]	IPR017441	Protein kinase, ATP binding site	Binding Site
B [auth C]	IPR045860	Snake toxin-like superfamily	Homologous Superfamily
B [auth C]	IPR000719	Protein kinase domain	Domain
B [auth C]	IPR003605	GS domain	Domain
B [auth C]	IPR011009	Protein kinase-like domain superfamily	Homologous Superfamily
B [auth C]	IPR008271	Serine/threonine-protein kinase, active site	Active Site
B [auth C]	IPR000333	Ser/Thr protein kinase, TGFB receptor	Family
B [auth C]	IPR000472	Activin types I and II receptor domain	Domain
B [auth C]	IPR000719	Protein kinase domain	Domain
B [auth C]	IPR000333	Ser/Thr protein kinase, TGFB receptor	Family
B [auth C]	IPR045860	Snake toxin-like superfamily	Homologous Superfamily
B [auth C]	IPR011009	Protein kinase-like domain superfamily	Homologous Superfamily
B [auth C]	IPR008271	Serine/threonine-protein kinase, active site	Active Site
A	IPR029034	Cystine-knot cytokine	Homologous Superfamily
A	IPR017948	Transforming growth factor beta, conserved site	Conserved Site
A	IPR015615	Transforming growth factor-beta-like	Family
A	IPR001111	TGF-beta, propeptide	Domain
A	IPR001839	Transforming growth factor-beta, C-terminal	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B [auth C]	Pharos: Q13705	astrocytic tumor glioblastoma lung carcinoma osteosarcoma ulcerative colitis atypical teratoid rhabdoid tumor interstitial cystitis malignant glioma ovarian cancer familial pancreatic carcinoma lung adenocarcinoma malignant mesothelioma psoriasis visceral heterotaxy situs inversus astrocytic tumor glioblastoma lung carcinoma osteosarcoma ulcerative colitis atypical teratoid rhabdoid tumor interstitial cystitis malignant glioma ovarian cancer familial pancreatic carcinoma lung adenocarcinoma malignant mesothelioma psoriasis visceral heterotaxy situs inversus heterotaxy, visceral, 4, autosomal right atrial isomerism subependymal giant cell astrocytoma Asplenia Syndrome interstitial cystitis lung cancer osteosarcoma primitive neuroectodermal tumor situs ambiguus atrial fibrillation large cell medulloblastoma malignant mesothelioma Pick disease atypical teratoid rhabdoid tumor medulloblastoma
A	Pharos: O95390	age-related macular degeneration Currarino triad myelodysplastic syndrome pituitary cancer atrial fibrillation lung cancer osteosarcoma wet macular degeneration beta thalassemia medulloblastoma ovarian cancer

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.