Annotations: 7M1Q

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF12698	ABC-2 family transporter protein (ABC2_membrane_3)	ABC-2 family transporter protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Retinal-specific phospholipid-transporting ATPase ABCA4	ATPase-coupled intramembrane lipid transporter activity lipid transporter activity intramembrane lipid transporter activity transporter activity ATP-dependent activity vitamin binding binding retinal binding isoprenoid binding retinoid binding lipid binding all-trans retinal binding small molecule binding ABC-type transporter activity ATPase-coupled intramembrane lipid transporter activity lipid transporter activity intramembrane lipid transporter activity transporter activity ATP-dependent activity vitamin binding binding retinal binding isoprenoid binding retinoid binding lipid binding all-trans retinal binding small molecule binding ABC-type transporter activity active transmembrane transporter activity primary active transmembrane transporter activity ATPase-coupled transmembrane transporter activity transmembrane transporter activity 11-cis retinal binding phospholipid transporter activity glycerophospholipid flippase activity flippase activity phosphatidylethanolamine flippase activity adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding N-retinylidene-phosphatidylethanolamine flippase activity alcohol transmembrane transporter activity retinol transmembrane transporter activity lipid transmembrane transporter activity vitamin transmembrane transporter activity pyrophosphatase activity ATP hydrolysis activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity GTPase activity	membrane organization transport phospholipid transfer to membrane phospholipid transport lipid localization lipid transport establishment of localization cellular component organization localization macromolecule localization cellular process cellular component organization or biogenesis organophosphate ester transport diterpenoid metabolic process membrane organization transport phospholipid transfer to membrane phospholipid transport lipid localization lipid transport establishment of localization cellular component organization localization macromolecule localization cellular process cellular component organization or biogenesis organophosphate ester transport diterpenoid metabolic process retinal metabolic process primary metabolic process aldehyde metabolic process retinoid metabolic process olefinic compound metabolic process metabolic process terpenoid metabolic process isoprenoid metabolic process lipid metabolic process transmembrane transport multicellular organismal process multicellular organismal-level homeostasis homeostatic process anatomical structure homeostasis tissue homeostasis retina homeostasis photoreceptor cell maintenance detection of light stimulus response to light stimulus phototransduction cellular response to stimulus detection of external stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation detection of visible light response to external stimulus detection of abiotic stimulus cell communication detection of stimulus response to abiotic stimulus response to radiation signal transduction phototransduction, visible light sensory perception of light stimulus system process sensory perception nervous system process visual perception phospholipid translocation lipid translocation regulation of membrane lipid distribution regulation of biological quality	cellular anatomical structure membrane membrane-bounded organelle non-motile cilium 9+0 non-motile cilium cilium neuron projection photoreceptor disc membrane photoreceptor outer segment plasma membrane bounded cell projection cell projection photoreceptor cell cilium organelle organelle membrane cellular anatomical structure membrane membrane-bounded organelle non-motile cilium 9+0 non-motile cilium cilium neuron projection photoreceptor disc membrane photoreceptor outer segment plasma membrane bounded cell projection cell projection photoreceptor cell cilium organelle organelle membrane cell periphery plasma membrane intracellular organelle intracellular anatomical structure intracellular membrane-bounded organelle cytoplasmic vesicle intracellular vesicle cytoplasm vesicle rod photoreceptor disc membrane vesicle membrane cytoplasmic vesicle membrane endoplasmic reticulum endomembrane system

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR003439	ABC transporter-like, ATP-binding domain	Domain
A	IPR003593	AAA+ ATPase domain	Domain
A	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A	IPR056264	ABCA1-4-like, C-terminal R2 regulatory domain	Domain
A	IPR017871	ABC transporter-like, conserved site	Conserved Site
A	IPR013525	ABC-2 type transporter, transmembrane domain	Domain
A	IPR005951	Retinal-specific ATP-binding cassette transporter	Family
A	IPR026082	ABC transporter A	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: P78363	retinitis pigmentosa cone-rod dystrophy age-related macular degeneration age related macular degeneration 2 retinitis pigmentosa 19 Stargardt disease cone-rod dystrophy 3 macular degeneration severe early-childhood-onset retinal dystrophy cleft lip colorectal cancer psoriasis vitelliform macular dystrophy colorectal carcinoma Juvenile macular degeneration retinitis pigmentosa cone-rod dystrophy age-related macular degeneration age related macular degeneration 2 retinitis pigmentosa 19 Stargardt disease cone-rod dystrophy 3 macular degeneration severe early-childhood-onset retinal dystrophy cleft lip colorectal cancer psoriasis vitelliform macular dystrophy colorectal carcinoma Juvenile macular degeneration lung adenocarcinoma night blindness retinal degeneration large cell medulloblastoma osteosarcoma scotoma blindness (disorder) cone dystrophy inherited retinal dystrophy Leber congenital amaurosis

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A	OPM	Transmembrane	Alpha-helical polytopic	ABC transporters	ABC transporter A family

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	ATP Binding Cassette (ABC) Transporters	retinal importer ABCA4 (Rim protein ABCR), unbound state

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.