2D57 | pdb_00002d57

Double layered 2D crystal structure of AQUAPORIN-4 (AQP4M23) at 3.2 a resolution by electron crystallography

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Aquaporin-like	8072765	4003025	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Aquaporin-like	8072766	3000508	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A		e2d57A1	A: Globin-like	X: Globin-like	H: Globin-like	T: PTS_EIIA_2	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.1080.10	Mainly Alpha	Up-down Bundle	Glycerol uptake facilitator protein	Glycerol uptake facilitator protein.	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Aquaporin-4	passive transmembrane transporter activity water transmembrane transporter activity channel activity transporter activity transmembrane transporter activity water channel activity identical protein binding protein binding binding	regulation of body fluid levels multicellular organismal process secretion by tissue secretion transport biological regulation cerebrospinal fluid secretion establishment of localization body fluid secretion localization regulation of biological quality multi-multicellular organism process reproductive process female pregnancy regulation of body fluid levels multicellular organismal process secretion by tissue secretion transport biological regulation cerebrospinal fluid secretion establishment of localization body fluid secretion localization regulation of biological quality multi-multicellular organism process reproductive process female pregnancy multi-organism reproductive process interleukin-6 production regulation of cellular process negative regulation of biological process regulation of interleukin-6 production regulation of cytokine production cytokine production negative regulation of cellular process regulation of multicellular organismal process negative regulation of macromolecule metabolic process regulation of biosynthetic process regulation of biological process negative regulation of metabolic process negative regulation of cytokine production regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of gene expression negative regulation of interleukin-6 production negative regulation of gene expression biosynthetic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process regulation of macromolecule biosynthetic process metabolic process cellular process macromolecule metabolic process negative regulation of multicellular organismal process regulation of metabolic process renal system process system process homeostatic process fluid transport water transport renal water transport multicellular organismal-level homeostasis chemical homeostasis renal absorption multicellular organismal-level water homeostasis multicellular organismal-level chemical homeostasis renal water absorption renal water homeostasis cellular response to stimulus response to stimulus response to oxygen-containing compound cellular response to glucose stimulus intracellular glucose homeostasis cellular response to oxygen-containing compound response to hexose cellular response to carbohydrate stimulus cellular response to chemical stimulus cellular homeostasis response to monosaccharide response to carbohydrate response to glucose response to chemical glucose homeostasis carbohydrate homeostasis cellular response to hexose stimulus intracellular chemical homeostasis cellular response to monosaccharide stimulus protein-containing complex organization protein homotetramerization cellular component organization cellular component biogenesis cellular component assembly protein complex oligomerization protein tetramerization protein-containing complex assembly protein homooligomerization cellular component organization or biogenesis interleukin-1 production regulation of interleukin-1 beta production negative regulation of interleukin-1 beta production negative regulation of interleukin-1 production regulation of interleukin-1 production interleukin-1 beta production regulation of cellular component size cell volume homeostasis intracellular water homeostasis regulation of cell size regulation of anatomical structure size response to corticosteroid response to lipid response to hormone response to steroid hormone response to endogenous stimulus response to glucocorticoid regulation of cell adhesion molecule production negative regulation of cell adhesion molecule production cell adhesion molecule production cellular localization establishment of localization in cell response to alcohol response to ethanol one-carbon compound transport gas transport carbon dioxide transport nervous system process epithelial cilium movement involved in extracellular fluid movement extracellular transport microtubule-based transport microtubule-based movement microtubule-based process cerebrospinal fluid circulation cilium movement biological process involved in interspecies interaction between organisms immune response response to other organism defense response response to type II interferon response to cytokine defense response to symbiont response to external stimulus cellular response to type II interferon response to biotic stimulus response to peptide immune system process defense response to other organism response to stress innate immune response cellular response to cytokine stimulus response to external biotic stimulus response to interleukin-6 cellular response to interleukin-6 sensory perception sensory perception of sound sensory perception of mechanical stimulus cellular response to lipid response to estradiol cellular response to estradiol stimulus cell adhesion cell-cell adhesion vascular endothelial growth factor production regulation of vascular endothelial growth factor production cellular response to interleukin-1 response to interleukin-1	cell periphery cellular anatomical structure sarcolemma plasma membrane membrane T-tubule cell surface external side of plasma membrane side of membrane cell-cell junction anchoring junction cell junction basal part of cell basal plasma membrane cell periphery cellular anatomical structure sarcolemma plasma membrane membrane T-tubule cell surface external side of plasma membrane side of membrane cell-cell junction anchoring junction cell junction basal part of cell basal plasma membrane plasma membrane region glial cell projection cell projection plasma membrane bounded cell projection astrocyte end-foot astrocyte projection basolateral plasma membrane cell projection membrane intracellular anatomical structure cytoplasm protein-containing complex extracellular region endosome membrane membrane-bounded organelle endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle membrane bounding membrane of organelle vesicle membrane cytoplasmic vesicle organelle vesicle organelle membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR023271	Aquaporin-like	Homologous Superfamily
A	IPR034294	Aquaporin transporter	Family
A	IPR022357	Major intrinsic protein, conserved site	Conserved Site
A	IPR000425	Major intrinsic protein	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A	OPM	Transmembrane	Alpha-helical polytopic	Major Intrinsic Protein (MIP)/FNT superfamily	Major intrinsic protein (MIP) family

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

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

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	Channels: Aquaporins and Glyceroporins	AQP4 aquaporin rat glial cell water channel

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.

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