Annotations: 6H1F

Structure of the nanobody-stabilized gelsolin D187N variant (second domain)

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: ECOD Classification
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d6h1fb_	Alpha and beta proteins (a+b)	Gelsolin-like	Actin depolymerizing proteins	Gelsolin-like	Gelsolin	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d6h1fa1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	automated matches	llama (Lama glama ) [TaxId: 9844 ],	SCOPe (2.08)
A	d6h1fa2	Artifacts	Tags	Tags	Tags	C-terminal Tags	llama (Lama glama ) [TaxId: 9844 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	DEAD	e6h1fB1	A: beta barrels	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: DEAD	ECOD (v294.2)
A	DEAD	e6h1fA1	A: beta barrels	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: DEAD	ECOD (v294.2)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
A	Heavy Chain	IGHV1	-	gelsolin	SAbDab (2026-05-15)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B	PF00626	Gelsolin repeat (Gelsolin)	Gelsolin repeat		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	Gelsolin	cytoskeletal protein binding actin binding protein-containing complex binding protein binding binding actin filament binding myosin II binding myosin binding cation binding ion binding calcium ion binding metal ion binding small molecule binding phosphatidylinositol 3-kinase catalytic subunit binding cytoskeletal protein binding actin binding protein-containing complex binding protein binding binding actin filament binding myosin II binding myosin binding cation binding ion binding calcium ion binding metal ion binding small molecule binding phosphatidylinositol 3-kinase catalytic subunit binding phosphatidylinositol 3-kinase binding kinase binding enzyme binding phosphatidylinositol-4,5-bisphosphate binding anion binding phosphatidylinositol bisphosphate binding phospholipid binding lipid binding phosphatidylinositol phosphate binding	membrane organization import into cell transport establishment of localization vesicle-mediated transport cellular component organization localization phagocytosis, engulfment membrane invagination cellular process phagocytosis cellular component organization or biogenesis endocytosis plasma membrane invagination membrane organization import into cell transport establishment of localization vesicle-mediated transport cellular component organization localization phagocytosis, engulfment membrane invagination cellular process phagocytosis cellular component organization or biogenesis endocytosis plasma membrane invagination positive regulation of epithelial cell apoptotic process regulation of biological process regulation of cellular process positive regulation of programmed cell death regulation of epithelial cell apoptotic process positive regulation of keratinocyte apoptotic process regulation of apoptotic process biological regulation positive regulation of biological process regulation of programmed cell death cell death positive regulation of apoptotic process epithelial cell apoptotic process keratinocyte apoptotic process regulation of keratinocyte apoptotic process apoptotic process programmed cell death positive regulation of cellular process developmental process multicellular organism development multicellular organismal process central nervous system development anatomical structure development nervous system development system development protein destabilization regulation of protein stability regulation of biological quality regulation of biosynthetic 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 actin filament severing actin filament-based process biological process involved in interspecies interaction between organisms response to stimulus immune response response to other organism defense response defense response to symbiont response to external stimulus host-mediated suppression of symbiont invasion host-mediated perturbation of symbiont process response to biotic stimulus immune system process defense response to other organism response to stress innate immune response response to external biotic stimulus modulation of process of another organism regulation of localization cellular localization plasma membrane raft distribution regulation of cellular component organization plasma membrane raft polarization plasma membrane organization membrane raft organization endomembrane system organization membrane raft distribution plasma membrane raft localization membrane raft polarization regulation of plasma membrane raft polarization localization within membrane membrane raft localization regulation of plasma membrane organization regulation of cellular localization cellular component disassembly actin polymerization or depolymerization actin cytoskeleton organization protein-containing complex organization actin filament organization protein-containing complex disassembly actin filament depolymerization organelle organization supramolecular fiber organization protein depolymerization cytoskeleton organization regulation of protein localization protein localization to membrane macromolecule localization receptor clustering intracellular protein localization regulation of receptor clustering regulation of protein localization to membrane regulation of protein maturation positive regulation of protein maturation positive regulation of protein metabolic process regulation of protein processing in phagocytic vesicle positive regulation of protein processing regulation of primary metabolic process protein maturation regulation of proteolysis proteolysis positive regulation of protein processing in phagocytic vesicle protein metabolic process regulation of protein metabolic process primary metabolic process protein processing in phagocytic vesicle regulation of protein processing positive regulation of proteolysis protein processing regulation of cellular component size negative regulation of biological process regulation of protein-containing complex disassembly regulation of actin filament depolymerization cellular component biogenesis actin filament capping cellular component assembly negative regulation of supramolecular fiber organization negative regulation of actin filament polymerization barbed-end actin filament capping negative regulation of cellular component organization regulation of organelle organization negative regulation of protein depolymerization negative regulation of protein-containing complex assembly regulation of protein polymerization regulation of supramolecular fiber organization regulation of cytoskeleton organization regulation of actin filament-based process regulation of protein-containing complex assembly negative regulation of protein-containing complex disassembly negative regulation of cellular process protein-containing complex assembly negative regulation of protein polymerization regulation of actin filament polymerization protein polymerization regulation of actin filament organization actin filament polymerization regulation of protein depolymerization negative regulation of cytoskeleton organization regulation of actin polymerization or depolymerization regulation of cellular component biogenesis negative regulation of organelle organization regulation of actin filament length regulation of actin cytoskeleton organization negative regulation of actin filament depolymerization regulation of anatomical structure size renal system process system process renal absorption renal protein absorption regulation of establishment of T cell polarity regulation of establishment or maintenance of cell polarity establishment of lymphocyte polarity establishment of T cell polarity cell activation establishment or maintenance of cell polarity lymphocyte activation leukocyte activation establishment of cell polarity regulation of establishment of cell polarity T cell activation relaxation of cardiac muscle muscle system process relaxation of muscle positive regulation of organelle organization positive regulation of cellular component organization regulation of actin nucleation positive regulation of cytoskeleton organization positive regulation of supramolecular fiber organization positive regulation of actin nucleation actin nucleation amyloid fibril formation muscle atrophy striated muscle adaptation muscle adaptation striated muscle atrophy organelle assembly plasma membrane bounded cell projection organization cell projection organization plasma membrane bounded cell projection assembly cilium assembly cilium organization cell projection assembly response to type II interferon response to cytokine cellular response to type II interferon response to peptide response to chemical cellular response to cytokine stimulus hepatocyte apoptotic process heart process cardiac muscle cell contraction actin filament-based movement cardiac muscle contraction muscle contraction striated muscle contraction circulatory system process actin-mediated cell contraction heart contraction blood circulation response to mechanical stimulus response to abiotic stimulus response to muscle stretch	cell projection cellular anatomical structure cell leading edge plasma membrane bounded cell projection lamellipodium extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle vesicle extracellular membrane-bounded organelle intracellular organelle cell projection cellular anatomical structure cell leading edge plasma membrane bounded cell projection lamellipodium extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle vesicle extracellular membrane-bounded organelle intracellular organelle intracellular anatomical structure cytoskeleton membraneless organelle intracellular membraneless organelle actin cytoskeleton cytoplasm cytosol sarcoplasm anchoring junction cell junction focal adhesion cell-substrate junction intracellular vesicle phagocytic vesicle intracellular membrane-bounded organelle cytoplasmic vesicle endocytic vesicle cell periphery plasma membrane membrane cell cortex cortical cytoskeleton actin cap cortical actin cytoskeleton membrane-enclosed lumen ficolin-1-rich granule endomembrane system intracellular organelle lumen organelle lumen ficolin-1-rich granule lumen secretory granule secretory vesicle blood microparticle vesicle lumen cytoplasmic vesicle lumen secretory granule lumen
A	gelsolin nanobody, Nb11	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR007123	Gelsolin-like domain	Domain
B	IPR029006	ADF-H/Gelsolin-like domain superfamily	Homologous Superfamily
B	IPR007122	Villin/Gelsolin	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B	: P06396	Finnish type amyloidosis amyloidosis paratuberculosis Liver Cirrhosis, Experimental acute coronary syndrome osteoporosis ductal breast carcinoma in situ esophageal adenocarcinoma tuberculosis Gaucher disease interstitial cystitis adrenoleukodystrophy malignant colon neoplasm atrial fibrillation breast carcinoma Finnish type amyloidosis amyloidosis paratuberculosis Liver Cirrhosis, Experimental acute coronary syndrome osteoporosis ductal breast carcinoma in situ esophageal adenocarcinoma tuberculosis Gaucher disease interstitial cystitis adrenoleukodystrophy malignant colon neoplasm atrial fibrillation breast carcinoma chronic obstructive pulmonary disease ovarian cancer drug-induced liver injury pancreatic intraductal papillary-mucinous neoplasm Emery-Dreifuss muscular dystrophy periodic fever syndrome psoriasis ulcerative colitis invasive ductal breast carcinoma acquired metabolic disease malignant ependymoma benign mesothelioma malignant pancreatic neoplasm breast fibroadenoma mesothelioma pancreatic ductal adenocarcinoma Duchenne muscular dystrophy pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia endometriosis pilocytic astrocytoma schizophrenia lattice corneal dystrophy lung cancer astrocytic tumor malignant mesothelioma breast cancer medulloblastoma osteosarcoma pancreatic intraductal papillary-mucinous carcinoma

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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.