Domain Annotation: SCOP Classification SCOP Database (version: 2.0) Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species
A	d2j3pa_	All beta proteins	beta-Trefoil	Cytokine	Fibroblast growth factors (FGF)	automated matches	RAT (Rattus norvegicus ) [TaxId: 10116 ]
B	d2j3pb_	All beta proteins	beta-Trefoil	Cytokine	Fibroblast growth factors (FGF)	automated matches	RAT (Rattus norvegicus ) [TaxId: 10116 ]

Domain Annotation: CATH CATH Database (version 4.2.0) Homepage

Chain	Domain	Class	Architecture	Topology	Homology
A	2.80.10.50	Mainly Beta	Trefoil	Trefoil (Acidic Fibroblast Growth Factor, subunit A)
B	2.80.10.50	Mainly Beta	Trefoil	Trefoil (Acidic Fibroblast Growth Factor, subunit A)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Identifier	Description	Comments	Source
A, B	PF00167	Fibroblast growth factor (FGF)	Fibroblast growth factor	Fibroblast growth factors are a family of proteins involved in growth and differentiation in a wide range of contexts. They are found in a wide range of organisms, from nematodes to humans [2]. Most share an internal core region of high similarity, c ...	Fibroblast growth factors are a family of proteins involved in growth and differentiation in a wide range of contexts. They are found in a wide range of organisms, from nematodes to humans [2]. Most share an internal core region of high similarity, conserved residues in which are involved in binding with their receptors. On binding, they cause dimerisation of their tyrosine kinase receptors leading to intracellular signalling. There are currently four known tyrosine kinase receptors for fibroblast growth factors. These receptors can each bind several different members of this family. Members of this family have a beta trefoil structure. Most have N-terminal signal peptides and are secreted. A few lack signal sequences but are secreted anyway; still others also lack the signal peptide but are found on the cell surface and within the extracellular matrix. A third group remain intracellular [2]. They have central roles in development, regulating cell proliferation, migration and differentiation. On the other hand, they are important in tissue repair following injury in adult organisms [2].	Domain

Gene Product Annotation Gene Product Annotation

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	HEPARIN-BINDING GROWTH FACTOR 1	signaling receptor binding fibroblast growth factor receptor binding binding protein binding growth factor receptor binding growth factor activity receptor regulator activity signaling receptor activator activity receptor ligand activity molecular function regulator glycosaminoglycan binding heparin binding carbohydrate derivative binding sulfur compound binding Hsp70 protein binding heat shock protein binding integrin binding protein-containing complex binding cell adhesion molecule binding S100 protein binding	cellular process cell differentiation developmental process cellular developmental process positive regulation of biological process positive regulation of cellular process regulation of biological process regulation of cellular process cell division regulation of cell division positive regulation of cell division biological regulation cell population proliferation positive regulation of cell population proliferation regulation of cell population proliferation epithelial cell proliferation regulation of epithelial cell proliferation positive regulation of epithelial cell proliferation metabolic process positive regulation of metabolic process gene expression regulation of gene expression positive regulation of macromolecule metabolic process positive regulation of gene expression regulation of metabolic process macromolecule metabolic process regulation of macromolecule metabolic process organic substance metabolic process	intracellular anatomical structure cytoplasm cell cortex cell periphery cellular anatomical entity cytosol external encapsulating structure extracellular matrix extracellular region extracellular space nucleus nucleolus membrane-enclosed lumen nuclear lumen organelle membrane-bounded organelle non-membrane-bounded organelle intracellular organelle intracellular membrane-bounded organelle intracellular non-membrane-bounded organelle organelle lumen intracellular organelle lumen nucleoplasm

RCSB PDB is funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.