Annotations: 9XOU

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C	SCOP2B Superfamily	Aldolase	8033008	3000445	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Aldolase	8033008	3000445	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Aldolase	8033008	3000445	SCOP2B (2022-06-29)
I	SCOP2B Superfamily	MFS general substrate transporter	8039139	3000310	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	MFS general substrate transporter	8039139	3000310	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	MFS general substrate transporter	8039139	3000310	SCOP2B (2022-06-29)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
D, E, F	Heavy Chain	IGHV1	-	lactose permease \| h3-prac-5350a,2-dehydro-3-deoxyphosphogluconate aldolase/4-hydroxy-2-oxoglutarate aldolase	SAbDab (2026-03-27)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C	PF01081	KDPG and KHG aldolase (Aldolase)	KDPG and KHG aldolase	This family includes the following members: 4-hydroxy-2-oxoglutarate aldolase (KHG-aldolase) Phospho-2-dehydro-3-deoxygluconate aldolase (KDPG-aldolase)	Domain
G, H, I	PF01306	LacY proton/sugar symporter (LacY_symp)	LacY proton/sugar symporter	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C	H3-PrAC-5350A,2-dehydro-3-deoxyphosphogluconate aldolase/4-hydroxy-2-oxoglutarate aldolase	2-dehydro-3-deoxy-6-phosphogalactonate aldolase activity lyase activity catalytic activity carbon-carbon lyase activity aldehyde-lyase activity	carbohydrate metabolic process catabolic process oxoacid metabolic process carbohydrate catabolic process aldonic acid catabolic process carboxylic acid metabolic process primary metabolic process organic acid catabolic process organic acid metabolic process monocarboxylic acid catabolic process galactonate catabolic process carboxylic acid catabolic process D-galactonate catabolic process metabolic process carbohydrate metabolic process catabolic process oxoacid metabolic process carbohydrate catabolic process aldonic acid catabolic process carboxylic acid metabolic process primary metabolic process organic acid catabolic process organic acid metabolic process monocarboxylic acid catabolic process galactonate catabolic process carboxylic acid catabolic process D-galactonate catabolic process metabolic process cellular process small molecule metabolic process monocarboxylic acid metabolic process small molecule catabolic process	-
G, H, I	Lactose permease	monoatomic cation transmembrane transporter activity proton transmembrane transporter activity solute:monoatomic cation symporter activity disaccharide transmembrane transporter activity oligosaccharide transmembrane transporter activity secondary active transmembrane transporter activity lactose:proton symporter activity carbohydrate:monoatomic cation symporter activity carbohydrate:proton symporter activity active transmembrane transporter activity solute:proton symporter activity lactose transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity carbohydrate transmembrane transporter activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity solute:monoatomic cation symporter activity disaccharide transmembrane transporter activity oligosaccharide transmembrane transporter activity secondary active transmembrane transporter activity lactose:proton symporter activity carbohydrate:monoatomic cation symporter activity carbohydrate:proton symporter activity active transmembrane transporter activity solute:proton symporter activity lactose transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity carbohydrate transmembrane transporter activity transmembrane transporter activity symporter activity oligosaccharide binding lactose binding binding disaccharide binding carbohydrate binding	localization transport carbohydrate transport establishment of localization lactose transport oligosaccharide transport disaccharide transport	cell periphery cellular anatomical structure plasma membrane membrane
D, E, F	LacY-nanobody-TAIL	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C	IPR000887	KDPG/KHG aldolase	Family
A, B, C	IPR013785	Aldolase-type TIM barrel	Homologous Superfamily
G, H, I	IPR018457	LacY/RafB permease family, conserved site	Conserved Site
G, H, I	IPR036259	MFS transporter superfamily	Homologous Superfamily
G, H, I	IPR000576	LacY/RafB permease family	Family
G, H, I	IPR020846	Major facilitator superfamily domain	Domain

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.