6NFJ | pdb_00006nfj

Structure of Beta-Klotho in Complex with FGF19 C-terminal peptide

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)
D	SCOP2B Superfamily	(Trans)glycosidases	8065802	3000313	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	(Trans)glycosidases	8065802	3000313	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)
E	Phage_base_V	e6nfjE1	A: a/b three-layered sandwiches	X: PriB N-terminal domain-like	H: Aconitase iron-sulfur domain	T: Aconitase iron-sulfur domain	F: Phage_base_V	ECOD (v294.1)
B	Ketoacyl-synt_C	e6nfjB1	A: a/b three-layered sandwiches	X: PriB N-terminal domain-like	H: Aconitase iron-sulfur domain	T: Aconitase iron-sulfur domain	F: Ketoacyl-synt_C	ECOD (v294.1)
D	Phage_base_V	e6nfjD1	A: a/b three-layered sandwiches	X: PriB N-terminal domain-like	H: Aconitase iron-sulfur domain	T: Aconitase iron-sulfur domain	F: Phage_base_V	ECOD (v294.1)
A	Ketoacyl-synt_C	e6nfjA1	A: a/b three-layered sandwiches	X: PriB N-terminal domain-like	H: Aconitase iron-sulfur domain	T: Aconitase iron-sulfur domain	F: Ketoacyl-synt_C	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
D	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (utative)
A	3.20.20.80	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Glycosidases	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B, E	Heavy Chain	IGHV1	-	beta-klotho	SAbDab (2026-03-27)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, D	PF00232	Glycosyl hydrolase family 1 (Glyco_hydro_1)	Glycosyl hydrolase family 1		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C, F	Fibroblast growth factor 19	protein binding binding signaling receptor binding fibroblast growth factor receptor binding growth factor receptor binding molecular function activator activity molecular function regulator activity signaling receptor regulator activity growth factor activity receptor ligand activity signaling receptor activator activity	regulation of biological process cell population proliferation regulation of cellular process positive regulation of cell population proliferation regulation of cell population proliferation biological regulation positive regulation of biological process cellular process positive regulation of cellular process cellular response to stimulus positive regulation of cell communication positive regulation of signal transduction response to stimulus signaling regulation of biological process cell population proliferation regulation of cellular process positive regulation of cell population proliferation regulation of cell population proliferation biological regulation positive regulation of biological process cellular process positive regulation of cellular process cellular response to stimulus positive regulation of cell communication positive regulation of signal transduction response to stimulus signaling regulation of signal transduction intracellular signal transduction cell communication positive regulation of response to stimulus positive regulation of JNK cascade regulation of intracellular signal transduction JNK cascade intracellular signaling cassette signal transduction regulation of signaling positive regulation of MAPK cascade regulation of JNK cascade positive regulation of intracellular signal transduction regulation of MAPK cascade regulation of response to stimulus MAPK cascade regulation of cell communication positive regulation of signaling developmental process heart development multicellular organism development multicellular organismal process anatomical structure development animal organ development circulatory system development system development neurogenesis cellular developmental process cell differentiation nervous system development response to fibroblast growth factor cellular response to growth factor stimulus cell surface receptor signaling pathway response to endogenous stimulus cell surface receptor protein tyrosine kinase signaling pathway cellular response to endogenous stimulus fibroblast growth factor receptor signaling pathway response to growth factor cellular response to fibroblast growth factor stimulus enzyme-linked receptor protein signaling pathway regulation of steroid biosynthetic process negative regulation of small molecule metabolic process oxoacid metabolic process ketone metabolic process steroid metabolic process regulation of lipid metabolic process negative regulation of biological process lipid biosynthetic process organic acid biosynthetic process organic acid metabolic process negative regulation of lipid biosynthetic process carboxylic acid biosynthetic process regulation of primary metabolic process regulation of small molecule metabolic process negative regulation of bile acid biosynthetic process negative regulation of cellular process small molecule metabolic process steroid biosynthetic process regulation of biosynthetic process negative regulation of steroid metabolic process bile acid biosynthetic process monocarboxylic acid biosynthetic process small molecule biosynthetic process negative regulation of metabolic process regulation of steroid metabolic process carboxylic acid metabolic process regulation of bile acid biosynthetic process primary metabolic process regulation of ketone metabolic process bile acid metabolic process biosynthetic process negative regulation of biosynthetic process negative regulation of steroid biosynthetic process metabolic process monocarboxylic acid metabolic process regulation of lipid biosynthetic process regulation of metabolic process negative regulation of lipid metabolic process lipid metabolic process positive regulation of ERK1 and ERK2 cascade ERK1 and ERK2 cascade regulation of ERK1 and ERK2 cascade biological process involved in interspecies interaction between organisms response to other organism response to bacterium response to external stimulus response to external biotic stimulus response to biotic stimulus positive regulation of phosphorylation regulation of protein modification process regulation of protein phosphorylation positive regulation of protein metabolic process positive regulation of phosphate metabolic process positive regulation of metabolic process positive regulation of protein modification process phosphate-containing compound metabolic process positive regulation of macromolecule metabolic process protein metabolic process positive regulation of protein phosphorylation phosphorus metabolic process protein modification process protein phosphorylation positive regulation of phosphorus metabolic process phosphorylation regulation of protein metabolic process regulation of macromolecule metabolic process macromolecule modification regulation of phosphorus metabolic process regulation of phosphorylation macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of gene expression negative regulation of gene expression negative regulation of macromolecule biosynthetic process regulation of macromolecule biosynthetic process negative regulation of macromolecule metabolic process regulation of localization import into cell hexose transmembrane transport regulation of D-glucose import across plasma membrane transport carbohydrate import across plasma membrane carbohydrate transport positive regulation of D-glucose transmembrane transport hexose import across plasma membrane localization positive regulation of transmembrane transport positive regulation of D-glucose import across plasma membrane regulation of transport import across plasma membrane establishment of localization transmembrane transport regulation of transmembrane transport D-glucose import across plasma membrane positive regulation of transport D-glucose transmembrane transport regulation of D-glucose transmembrane transport monosaccharide transmembrane transport carbohydrate transmembrane transport stem cell development neural crest cell differentiation neural crest cell development cell development mesenchyme development tissue development mesenchymal cell migration stem cell differentiation ameboidal-type cell migration cell migration mesenchymal cell differentiation cell motility neural crest cell migration regulation of cell motility regulation of locomotion regulation of cell migration locomotion response to alcohol response to chemical response to oxygen-containing compound response to ethanol	cellular anatomical structure extracellular region intracellular anatomical structure cytoplasm
B, E	Nanobody 30	-	-	-
A, D	Beta-klotho	fibroblast growth factor binding protein binding binding growth factor binding signaling receptor binding fibroblast growth factor receptor binding growth factor receptor binding hydrolase activity, acting on glycosyl bonds hydrolase activity, hydrolyzing O-glycosyl compounds hydrolase activity catalytic activity	regulation of biological process cell population proliferation regulation of cellular process positive regulation of cell population proliferation regulation of cell population proliferation biological regulation positive regulation of biological process cellular process positive regulation of cellular process response to fibroblast growth factor cellular response to stimulus positive regulation of cell communication cellular response to growth factor stimulus positive regulation of signal transduction regulation of biological process cell population proliferation regulation of cellular process positive regulation of cell population proliferation regulation of cell population proliferation biological regulation positive regulation of biological process cellular process positive regulation of cellular process response to fibroblast growth factor cellular response to stimulus positive regulation of cell communication cellular response to growth factor stimulus positive regulation of signal transduction response to stimulus signaling regulation of signal transduction cell surface receptor protein tyrosine kinase signaling pathway intracellular signal transduction cell communication positive regulation of response to stimulus cellular response to endogenous stimulus regulation of intracellular signal transduction intracellular signaling cassette signal transduction enzyme-linked receptor protein signaling pathway regulation of signaling positive regulation of MAPKKK cascade by fibroblast growth factor receptor signaling pathway cell surface receptor signaling pathway response to endogenous stimulus positive regulation of MAPK cascade positive regulation of intracellular signal transduction regulation of MAPK cascade regulation of response to stimulus fibroblast growth factor receptor signaling pathway MAPK cascade regulation of cell communication response to growth factor cellular response to fibroblast growth factor stimulus positive regulation of signaling carbohydrate metabolic process primary metabolic process metabolic process	cell periphery cellular anatomical structure plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C, F	IPR035444	Fibroblast growth factor 15/19/21	Family
C, F	IPR002209	Fibroblast growth factor family	Family
C, F	IPR008996	Cytokine IL1/FGF	Homologous Superfamily
A, D	IPR001360	Glycoside hydrolase family 1	Family
A, D	IPR017853	Glycoside hydrolase superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
C, F	Pharos: O95750	breast carcinoma plasma cell myeloma hepatocellular carcinoma Liver carcinoma
A, D	Pharos: Q86Z14	atopic eczema ductal breast carcinoma in situ invasive ductal breast carcinoma pancreatic ductal adenocarcinoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia breast carcinoma Emery-Dreifuss muscular dystrophy malignant pancreatic neoplasm pancreatic intraductal papillary-mucinous carcinoma peripheral arterial disease breast fibroadenoma herpes zoster non-small cell lung carcinoma pancreatic intraductal papillary-mucinous neoplasm ulcerative colitis

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.