Annotations: 7SL8

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B		e7sl8B1	A: Family A G protein-coupled receptor-like	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: G-gamma	F:	ECOD (20:10:01)
A		e7sl8A1	A: Family A G protein-coupled receptor-like	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: G-gamma	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
A	1.20.1730.10	Mainly Alpha	Up-down Bundle	Sodium/glucose cotransporter	Sodium/glucose cotransporter	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B	Heavy Chain	IGHV1	-	sodium/glucose cotransporter 1	SAbDab (2026-03-13)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	nanobody Nb1	-	-	-
A	Sodium/glucose cotransporter 1	water transmembrane transporter activity transporter activity transmembrane transporter activity monosaccharide transmembrane transporter activity sugar transmembrane transporter activity pentose transmembrane transporter activity carbohydrate transmembrane transporter activity hexose transmembrane transporter activity fucose transmembrane transporter activity D-glucose transmembrane transporter activity galactose transmembrane transporter activity monoatomic cation transmembrane transporter activity solute:sodium symporter activity solute:monoatomic cation symporter activity water transmembrane transporter activity transporter activity transmembrane transporter activity monosaccharide transmembrane transporter activity sugar transmembrane transporter activity pentose transmembrane transporter activity carbohydrate transmembrane transporter activity hexose transmembrane transporter activity fucose transmembrane transporter activity D-glucose transmembrane transporter activity galactose transmembrane transporter activity monoatomic cation transmembrane transporter activity solute:sodium symporter activity solute:monoatomic cation symporter activity polyol transmembrane transporter activity sodium ion transmembrane transporter activity secondary active transmembrane transporter activity myo-inositol:sodium symporter activity myo-inositol transmembrane transporter activity active transmembrane transporter activity monoatomic ion transmembrane transporter activity metal ion transmembrane transporter activity symporter activity galactose:sodium symporter activity carbohydrate:monoatomic cation symporter activity D-glucose:sodium symporter activity carbohydrate derivative transmembrane transporter activity glucoside transmembrane transporter activity alpha-glucoside transmembrane transporter activity	multicellular organismal process renal system process system process hexose transmembrane transport transport carbohydrate transport renal D-glucose absorption establishment of localization transmembrane transport localization D-glucose transmembrane transport renal absorption cellular process monosaccharide transmembrane transport multicellular organismal process renal system process system process hexose transmembrane transport transport carbohydrate transport renal D-glucose absorption establishment of localization transmembrane transport localization D-glucose transmembrane transport renal absorption cellular process monosaccharide transmembrane transport carbohydrate transmembrane transport import into cell import across plasma membrane carbohydrate import across plasma membrane hexose import across plasma membrane D-glucose import across plasma membrane myo-inositol transport organic hydroxy compound transport glycoside transport glucoside transport alpha-glucoside transport carbohydrate derivative transport transepithelial water transport epithelial fluid transport transepithelial transport fluid transport water transport monoatomic ion transmembrane transport sodium ion import across plasma membrane sodium ion transmembrane transport inorganic cation import across plasma membrane metal ion transport monoatomic cation transmembrane transport inorganic ion import across plasma membrane monoatomic ion transport monoatomic cation transport sodium ion transport fucose transmembrane transport digestion intestinal absorption digestive system process intestinal hexose absorption pentose transmembrane transport circulatory system process vascular process in circulatory system vascular transport transport across blood-brain barrier galactose transmembrane transport intestinal D-glucose absorption	cell periphery cellular anatomical structure apical part of cell membrane plasma membrane plasma membrane region apical plasma membrane membrane-bounded organelle intracellular anatomical structure nuclear membrane nucleus intracellular membrane-bounded organelle endomembrane system intracellular organelle cell periphery cellular anatomical structure apical part of cell membrane plasma membrane plasma membrane region apical plasma membrane membrane-bounded organelle intracellular anatomical structure nuclear membrane nucleus intracellular membrane-bounded organelle endomembrane system intracellular organelle organelle envelope organelle nuclear envelope organelle membrane extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space vesicle extracellular membrane-bounded organelle early endosome endosome intracellular vesicle cytoplasmic vesicle cytoplasm Golgi apparatus perinuclear region of cytoplasm brush border membrane cluster of actin-based cell projections plasma membrane bounded cell projection brush border cell projection cell projection membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR018212	Sodium/solute symporter, conserved site	Conserved Site
A	IPR038377	Sodium/glucose symporter superfamily	Homologous Superfamily
A	IPR001734	Sodium/solute symporter	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: P13866	glucose-galactose malabsorption breast cancer DOID:0081062 lung adenocarcinoma ovarian cancer type 1 diabetes mellitus lung cancer pancreatic intraductal papillary-mucinous neoplasm type 2 diabetes mellitus Crohn disease inborn carbohydrate metabolic disorder lung carcinoma psoriasis ulcerative colitis

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A	OPM	Transmembrane	Alpha-helical polytopic	APC (Amino acid-Polyamine-organoCation) superfamily	Solute:sodium symporter

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Solute Sodium Symporter (SSS) Family	SGLT1 Sodium-Glucose Transporter

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.