Annotations: 9D7U

The low pH structure

External Resource: Annotation

Domain Annotation: ECOD Classification
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	p450	e9d7uA1	A: alpha arrays	X: Hypothetical protein YqbG-like	H: Hypothetical protein YqbG-like	T: alpha/beta-Hydrolases	F: p450	ECOD (v295.2)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
A	Heavy Chain	IGHV1	-	-	SAbDab (2026-09-11)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF07690	Major Facilitator Superfamily (MFS_1)	Major Facilitator Superfamily	-	Family
A	PF01353	Green fluorescent protein (GFP)	Green fluorescent protein		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Green fluorescence protein,MFS-type transporter SLC18B1,membrane protein and fusion partners	monoatomic cation transmembrane transporter activity antiporter activity proton transmembrane transporter activity active transmembrane transporter activity polyamine:proton antiporter activity monoatomic ion transmembrane transporter activity polyamine transmembrane transporter activity transporter activity transmembrane transporter activity secondary active transmembrane transporter activity monoamine:proton antiporter activity monoamine transmembrane transporter activity	bioluminescence metabolic process cellular process generation of precursor metabolites and energy localization nitrogen compound transport transport spermine transport polyamine transport establishment of localization spermidine transport import into cell cellular localization serotonin uptake bioluminescence metabolic process cellular process generation of precursor metabolites and energy localization nitrogen compound transport transport spermine transport polyamine transport establishment of localization spermidine transport import into cell cellular localization serotonin uptake organic hydroxy compound transport neurotransmitter transport establishment of localization in cell neurotransmitter uptake neurotransmitter reuptake	membrane-bounded organelle intracellular anatomical structure synapse intracellular vesicle transport vesicle membrane endomembrane system intracellular organelle presynapse cellular anatomical structure bounding membrane of organelle cytoplasmic vesicle vesicle membrane synaptic vesicle synaptic vesicle membrane membrane-bounded organelle intracellular anatomical structure synapse intracellular vesicle transport vesicle membrane endomembrane system intracellular organelle presynapse cellular anatomical structure bounding membrane of organelle cytoplasmic vesicle vesicle membrane synaptic vesicle synaptic vesicle membrane cell junction vesicle transport vesicle membrane exocytic vesicle membrane intracellular membrane-bounded organelle cytoplasmic vesicle membrane organelle secretory vesicle cytoplasm organelle membrane exocytic vesicle secretory granule secretory granule membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR000786	Green fluorescent protein, GFP	Family
A	IPR011584	Green fluorescent protein-related	Family
A	IPR009017	Green fluorescent protein	Homologous Superfamily
A	IPR050930	Major Facilitator Superfamily Vesicular Transporter	Family
A	IPR011701	Major facilitator superfamily	Family
A	IPR036259	MFS transporter superfamily	Homologous Superfamily
A	IPR020846	Major facilitator superfamily domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	: Q6NT16	breast cancer medulloblastoma pancreatic intraductal papillary-mucinous carcinoma cystic fibrosis osteosarcoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia large cell medulloblastoma ovarian cancer tuberculosis

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

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

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Major Facilitator Superfamily (MFS) Transporters	VPAT vesicular polyamine transporter (SLC18B1)

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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.