Annotations: 7TW6

Cryo-EM structure of human ankyrin complex (B4P1A1) from red blood cell

External Resource: Annotation

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

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
E [auth K]	SCOP2B Superfamily	Phoshotransferase/anion transport protein	8033412	3000490	SCOP2B (2022-06-29)
F [auth J]	SCOP2B Superfamily	Phoshotransferase/anion transport protein	8033412	3000490	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Nucleobase/cation symporter 2, NCS2-like	8092954	3002647	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Phoshotransferase/anion transport protein	8033412	3000490	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Phoshotransferase/anion transport protein	8033412	3000490	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Nucleobase/cation symporter 2, NCS2-like	8092954	3002647	SCOP2B (2022-06-29)
D [auth G]	SCOP2B Superfamily	Ankyrin repeat	8057716	3000154	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
E [auth K]	adh_short_C2	e7tw6K1	A: alpha arrays	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: adh_short_C2	ECOD (v295)
F [auth J]	adh_short_C2	e7tw6J1	A: alpha arrays	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: adh_short_C2	ECOD (v295)
B		e7tw6B1	A: alpha arrays	X: cradle loop barrel	H: Cytochrome P450	T: Cytochrome P450	F:	ECOD (v295)
A	G-alpha	e7tw6A1	A: alpha arrays	X: cradle loop barrel	H: Cytochrome P450	T: Cytochrome P450	F: G-alpha	ECOD (v295)
D [auth G]	adh_short_C2	e7tw6G1	A: alpha arrays	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: adh_short_C2	ECOD (v295)
C [auth E]	adh_short_C2	e7tw6E1	A: alpha arrays	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: adh_short_C2	ECOD (v295)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, E [auth K], F [auth J]	PF00955	HCO3- transporter integral membrane domain (HCO3_cotransp)	HCO3- transporter integral membrane domain	This family contains Band 3 anion exchange proteins that exchange CL-/HCO3- such as Swiss:P48751. This family also includes cotransporters of Na+/HCO3- such as Swiss:O15153.	Domain
A, B, E [auth K], F [auth J]	PF07565	Band 3 cytoplasmic domain (Band_3_cyto)	Band 3 cytoplasmic domain	This family contains the cytoplasmic domain of the Band 3 anion exchange proteins that exchange Cl-/HCO3-. Band 3 constitutes the most abundant polypeptide in the red blood cell membrane, comprising 25% of the total membrane protein. The cytoplasmic ...	This family contains the cytoplasmic domain of the Band 3 anion exchange proteins that exchange Cl-/HCO3-. Band 3 constitutes the most abundant polypeptide in the red blood cell membrane, comprising 25% of the total membrane protein. The cytoplasmic domain of band 3 functions primarily as an anchoring site for other membrane-associated proteins. Included among the protein ligands of cdb3 are ankyrin, protein 4.2, protein 4.1, glyceraldehyde-3-phosphate dehydrogenase (GAPDH), phosphofructokinase, aldolase, hemoglobin, hemichromes, and the protein tyrosine kinase (p72syk). [1]	Domain
D [auth G]	PF00023	Ankyrin repeat (Ank)	Ankyrin repeat	-	Repeat
C [auth E]	PF00868	Transglutaminase family (Transglut_N)	Transglutaminase family		Domain
C [auth E]	PF00927	Transglutaminase family, C-terminal ig like domain (Transglut_C)	Transglutaminase family, C-terminal ig like domain		Domain
C [auth E]	PF01841	Transglutaminase-like superfamily (Transglut_core)	Transglutaminase-like superfamily	This domain is found in animal transglutaminases and other bacterial proteins of unknown function. Sequence conservation in this superfamily primarily involves three motifs that centre around conserved cysteine, histidine, and aspartate residues that ...	This domain is found in animal transglutaminases and other bacterial proteins of unknown function. Sequence conservation in this superfamily primarily involves three motifs that centre around conserved cysteine, histidine, and aspartate residues that form the catalytic triad in the structurally characterised transglutaminase, the human blood clotting factor XIIIa' [1]. On the basis of the experimentally demonstrated activity of the Methanobacterium phage pseudomurein endoisopeptidase [2], it is proposed that many, if not all, microbial homologues of the transglutaminases are proteases and that the eukaryotic transglutaminases have evolved from an ancestral protease. [3]	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, E [auth K], F [auth J]	Band 3 anion transport protein	cytoskeletal protein binding ankyrin binding protein binding binding hemoglobin binding bicarbonate transmembrane transporter activity transporter activity transmembrane transporter activity chloride transmembrane transporter activity monoatomic anion transmembrane transporter activity bicarbonate:monoatomic anion antiporter activity secondary active transmembrane transporter activity antiporter activity active transmembrane transporter activity cytoskeletal protein binding ankyrin binding protein binding binding hemoglobin binding bicarbonate transmembrane transporter activity transporter activity transmembrane transporter activity chloride transmembrane transporter activity monoatomic anion transmembrane transporter activity bicarbonate:monoatomic anion antiporter activity secondary active transmembrane transporter activity antiporter activity active transmembrane transporter activity chloride:bicarbonate antiporter activity monoatomic ion transmembrane transporter activity solute:inorganic anion antiporter activity protein-membrane adaptor activity protein-macromolecule adaptor activity molecular adaptor activity identical protein binding protein homodimerization activity protein dimerization activity	transport monoatomic ion transmembrane transport establishment of localization chloride transport transmembrane transport localization chloride transmembrane transport monoatomic anion transport monoatomic anion transmembrane transport monoatomic ion transport cellular process inorganic anion transport cellular homeostasis chemical homeostasis transport monoatomic ion transmembrane transport establishment of localization chloride transport transmembrane transport localization chloride transmembrane transport monoatomic anion transport monoatomic anion transmembrane transport monoatomic ion transport cellular process inorganic anion transport cellular homeostasis chemical homeostasis homeostatic process monoatomic ion homeostasis intracellular chemical homeostasis intracellular monoatomic ion homeostasis bicarbonate transport biological regulation regulation of intracellular pH intracellular monoatomic cation homeostasis regulation of pH regulation of biological quality monoatomic cation homeostasis	cellular anatomical structure membrane intracellular anatomical structure intracellular membraneless organelle Z disc sarcomere intracellular organelle I band organelle membraneless organelle contractile muscle fiber cytoplasm supramolecular fiber myofibril cellular anatomical structure membrane intracellular anatomical structure intracellular membraneless organelle Z disc sarcomere intracellular organelle I band organelle membraneless organelle contractile muscle fiber cytoplasm supramolecular fiber myofibril supramolecular polymer supramolecular complex ankyrin-1 complex protein-containing complex membrane protein complex extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region vesicle extracellular membrane-bounded organelle cell periphery plasma membrane basal part of cell basal plasma membrane plasma membrane region basolateral plasma membrane blood microparticle cytoplasmic side of plasma membrane cytoplasmic side of membrane side of membrane cell cortex cortical cytoskeleton cytoskeleton
D [auth G]	Ankyrin-1	cytoskeletal protein binding spectrin binding protein-containing complex binding protein binding binding protein phosphatase binding phosphatase binding enzyme binding transmembrane transporter binding structural constituent of cytoskeleton structural molecule activity cytoskeletal adaptor activity protein-macromolecule adaptor activity molecular adaptor activity cytoskeletal protein binding spectrin binding protein-containing complex binding protein binding binding protein phosphatase binding phosphatase binding enzyme binding transmembrane transporter binding structural constituent of cytoskeleton structural molecule activity cytoskeletal adaptor activity protein-macromolecule adaptor activity molecular adaptor activity ATPase binding	localization protein localization to cell periphery cellular localization protein localization to plasma membrane macromolecule localization cellular process intracellular protein localization localization within membrane protein localization to membrane establishment or maintenance of bipolar cell polarity establishment or maintenance of epithelial cell apical/basal polarity maintenance of cell polarity maintenance of epithelial cell apical/basal polarity maintenance of apical/basal cell polarity localization protein localization to cell periphery cellular localization protein localization to plasma membrane macromolecule localization cellular process intracellular protein localization localization within membrane protein localization to membrane establishment or maintenance of bipolar cell polarity establishment or maintenance of epithelial cell apical/basal polarity maintenance of cell polarity maintenance of epithelial cell apical/basal polarity maintenance of apical/basal cell polarity establishment or maintenance of apical/basal cell polarity establishment or maintenance of cell polarity transport intracellular transport endoplasmic reticulum to Golgi vesicle-mediated transport establishment of localization vesicle-mediated transport intercellular transport establishment of localization in cell Golgi vesicle transport cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation signal transduction cell communication cellular component organization organelle organization cellular component organization or biogenesis cytoskeleton organization secretion by cell exocytosis secretion export from cell	cell periphery postsynapse cellular anatomical structure postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region synaptic membrane M band intracellular anatomical structure intracellular membraneless organelle sarcomere cell periphery postsynapse cellular anatomical structure postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region synaptic membrane M band intracellular anatomical structure intracellular membraneless organelle sarcomere intracellular organelle organelle membraneless organelle contractile muscle fiber A band cytoplasm supramolecular fiber myofibril supramolecular polymer supramolecular complex Z disc I band ankyrin-1 complex protein-containing complex membrane protein complex cytosol sarcolemma basal part of cell basal plasma membrane basolateral plasma membrane cell projection neuron projection plasma membrane bounded cell projection cytoskeleton axon cell leading edge axolemma leading edge membrane neuron projection membrane main axon cell projection membrane membrane-bounded organelle intracellular membrane-bounded organelle endomembrane system sarcoplasm endoplasmic reticulum sarcoplasmic reticulum spectrin-associated cytoskeleton cytoplasmic side of plasma membrane cytoplasmic side of membrane side of membrane
C [auth E]	Protein 4.2	binding 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 binding 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 small molecule binding structural constituent of cytoskeleton structural molecule activity aminoacyltransferase activity protein-glutamine gamma-glutamyltransferase activity catalytic activity, acting on a protein acyltransferase activity transferase activity catalytic activity	developmental process regulation of biological process regulation of developmental process biological regulation regulation of cell shape cell morphogenesis regulation of cell morphogenesis anatomical structure morphogenesis anatomical structure development regulation of biological quality regulation of anatomical structure morphogenesis multicellular organismal process erythrocyte development cellular developmental process developmental process regulation of biological process regulation of developmental process biological regulation regulation of cell shape cell morphogenesis regulation of cell morphogenesis anatomical structure morphogenesis anatomical structure development regulation of biological quality regulation of anatomical structure morphogenesis multicellular organismal process erythrocyte development cellular developmental process homeostatic process hemopoiesis cell development erythrocyte maturation developmental maturation erythrocyte differentiation multicellular organismal-level homeostasis anatomical structure maturation myeloid cell differentiation cell differentiation immune system process myeloid cell development cellular process homeostasis of number of cells cell maturation myeloid cell homeostasis erythrocyte homeostasis peptide cross-linking macromolecule modification metabolic process primary metabolic process protein metabolic process macromolecule metabolic process protein modification process	ankyrin-1 complex protein-containing complex cellular anatomical structure membrane membrane protein complex intracellular organelle intracellular anatomical structure cytoskeleton organelle membraneless organelle intracellular membraneless organelle cell periphery plasma membrane cell cortex ankyrin-1 complex protein-containing complex cellular anatomical structure membrane membrane protein complex intracellular organelle intracellular anatomical structure cytoskeleton organelle membraneless organelle intracellular membraneless organelle cell periphery plasma membrane cell cortex cortical cytoskeleton cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, E [auth K], F [auth J]	IPR013769	Band 3 cytoplasmic domain	Domain
A, B, E [auth K], F [auth J]	IPR001717	Anion exchange protein	Family
A, B, E [auth K], F [auth J]	IPR003020	Bicarbonate transporter, eukaryotic	Family
A, B, E [auth K], F [auth J]	IPR011531	Bicarbonate transporter-like, transmembrane domain	Domain
A, B, E [auth K], F [auth J]	IPR002977	Anion exchange protein 1	Family
A, B, E [auth K], F [auth J]	IPR016152	Phosphotransferase/anion transporter	Homologous Superfamily
A, B, E [auth K], F [auth J]	IPR018241	Anion exchange, conserved site	Conserved Site
D [auth G]	IPR036770	Ankyrin repeat-containing domain superfamily	Homologous Superfamily
D [auth G]	IPR040745	Ankyrin, UPA domain	Domain
D [auth G]	IPR000906	ZU5 domain	Domain
D [auth G]	IPR002110	Ankyrin repeat	Repeat
D [auth G]	IPR011029	Death-like domain superfamily	Homologous Superfamily
D [auth G]	IPR051165	Multifunctional Ankyrin Repeat Domain-Containing Protein	Family
D [auth G]	IPR000488	Death domain	Domain
C [auth E]	IPR036985	Transglutaminase-like superfamily	Homologous Superfamily
C [auth E]	IPR036238	Transglutaminase, C-terminal domain superfamily	Homologous Superfamily
C [auth E]	IPR013808	Transglutaminase, active site	Active Site
C [auth E]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
C [auth E]	IPR002931	Transglutaminase-like	Domain
C [auth E]	IPR014756	Immunoglobulin E-set	Homologous Superfamily
C [auth E]	IPR038765	Papain-like cysteine peptidase superfamily	Homologous Superfamily
C [auth E]	IPR001102	Transglutaminase, N-terminal	Domain
C [auth E]	IPR008958	Transglutaminase, C-terminal	Domain
C [auth E]	IPR050779	Protein-glutamine gamma-glutamyltransferases	Family
C [auth E]	IPR023608	Protein-glutamine gamma-glutamyltransferase, animal	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B, C [auth E], D [auth G], E [auth K] A, B, C [auth E], D [auth G], E [auth K], F [auth J]	OPM	Transmembrane	Alpha-helical polytopic	APC (Amino acid-Polyamine-organoCation) superfamily	Anion exchanger family

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B, C [auth E], D [auth G], E [auth K] A, B, C [auth E], D [auth G], E [auth K], F [auth J]	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B, C [auth E], D [auth G], E [auth K] A, B, C [auth E], D [auth G], E [auth K], F [auth J]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Solute Carrier Family 4 (anion exchanger)	Band 3 (AE1) anion exchanger dimer