2ABM

Crystal Structure of Aquaporin Z Tetramer Reveals both Open and Closed Water-conducting Channels

External Resource: Annotation

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

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
C	d2abmc1	Membrane and cell surface proteins and peptides	Aquaporin-like	Aquaporin-like	Aquaporin-like	Aquaporin Z	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
D	d2abmd1	Membrane and cell surface proteins and peptides	Aquaporin-like	Aquaporin-like	Aquaporin-like	Aquaporin Z	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
A	d2abma1	Membrane and cell surface proteins and peptides	Aquaporin-like	Aquaporin-like	Aquaporin-like	Aquaporin Z	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B	d2abmb1	Membrane and cell surface proteins and peptides	Aquaporin-like	Aquaporin-like	Aquaporin-like	Aquaporin Z	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
E	d2abme1	Membrane and cell surface proteins and peptides	Aquaporin-like	Aquaporin-like	Aquaporin-like	Aquaporin Z	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
F	d2abmf1	Membrane and cell surface proteins and peptides	Aquaporin-like	Aquaporin-like	Aquaporin-like	Aquaporin Z	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
G	d2abmg1	Membrane and cell surface proteins and peptides	Aquaporin-like	Aquaporin-like	Aquaporin-like	Aquaporin Z	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
H	d2abmh1	Membrane and cell surface proteins and peptides	Aquaporin-like	Aquaporin-like	Aquaporin-like	Aquaporin Z	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C	SCOP2B Superfamily	Aquaporin-like	8040486	3000508	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Aquaporin-like	8040486	3000508	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Aquaporin-like	8040486	3000508	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Aquaporin-like	8040486	3000508	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Aquaporin-like	8040486	3000508	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Aquaporin-like	8040486	3000508	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Aquaporin-like	8040486	3000508	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	Aquaporin-like	8040486	3000508	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)
C	MIP	e2abmC1	A: alpha complex topology	X: Aquaporin-like (From Topology)	H: Aquaporin-like (From Topology)	T: Aquaporin-like	F: MIP	ECOD (1.6)
D	MIP	e2abmD1	A: alpha complex topology	X: Aquaporin-like (From Topology)	H: Aquaporin-like (From Topology)	T: Aquaporin-like	F: MIP	ECOD (1.6)
A	MIP	e2abmA1	A: alpha complex topology	X: Aquaporin-like (From Topology)	H: Aquaporin-like (From Topology)	T: Aquaporin-like	F: MIP	ECOD (1.6)
B	MIP	e2abmB1	A: alpha complex topology	X: Aquaporin-like (From Topology)	H: Aquaporin-like (From Topology)	T: Aquaporin-like	F: MIP	ECOD (1.6)
E	MIP	e2abmE1	A: alpha complex topology	X: Aquaporin-like (From Topology)	H: Aquaporin-like (From Topology)	T: Aquaporin-like	F: MIP	ECOD (1.6)
F	MIP	e2abmF1	A: alpha complex topology	X: Aquaporin-like (From Topology)	H: Aquaporin-like (From Topology)	T: Aquaporin-like	F: MIP	ECOD (1.6)
G	MIP	e2abmG1	A: alpha complex topology	X: Aquaporin-like (From Topology)	H: Aquaporin-like (From Topology)	T: Aquaporin-like	F: MIP	ECOD (1.6)
H	MIP	e2abmH1	A: alpha complex topology	X: Aquaporin-like (From Topology)	H: Aquaporin-like (From Topology)	T: Aquaporin-like	F: MIP	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C	1.20.1080.10	Mainly Alpha	Up-down Bundle	Glycerol uptake facilitator protein	Glycerol uptake facilitator protein.	CATH (4.3.0)
D	1.20.1080.10	Mainly Alpha	Up-down Bundle	Glycerol uptake facilitator protein	Glycerol uptake facilitator protein.	CATH (4.3.0)
A	1.20.1080.10	Mainly Alpha	Up-down Bundle	Glycerol uptake facilitator protein	Glycerol uptake facilitator protein.	CATH (4.3.0)
B	1.20.1080.10	Mainly Alpha	Up-down Bundle	Glycerol uptake facilitator protein	Glycerol uptake facilitator protein.	CATH (4.3.0)
E	1.20.1080.10	Mainly Alpha	Up-down Bundle	Glycerol uptake facilitator protein	Glycerol uptake facilitator protein.	CATH (4.3.0)
F	1.20.1080.10	Mainly Alpha	Up-down Bundle	Glycerol uptake facilitator protein	Glycerol uptake facilitator protein.	CATH (4.3.0)
G	1.20.1080.10	Mainly Alpha	Up-down Bundle	Glycerol uptake facilitator protein	Glycerol uptake facilitator protein.	CATH (4.3.0)
H	1.20.1080.10	Mainly Alpha	Up-down Bundle	Glycerol uptake facilitator protein	Glycerol uptake facilitator protein.	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F, G, H	PF00230	Major intrinsic protein (MIP)	Major intrinsic protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F, G, H	Aquaporin Z	passive transmembrane transporter activity water transmembrane transporter activity inorganic molecular entity transmembrane transporter activity channel activity transporter activity transmembrane transporter activity water channel activity identical protein binding protein binding binding	localization transport fluid transport establishment of localization water transport regulation of cellular component size homeostatic process cell volume homeostasis biological regulation cellular component organization cellular homeostasis intracellular water homeostasis chemical homeostasis intracellular chemical homeostasis localization transport fluid transport establishment of localization water transport regulation of cellular component size homeostatic process cell volume homeostasis biological regulation cellular component organization cellular homeostasis intracellular water homeostasis chemical homeostasis intracellular chemical homeostasis cellular process cellular component organization or biogenesis regulation of biological quality regulation of cell size regulation of anatomical structure size response to osmotic stress response to stimulus response to stress response to abiotic stimulus	cell periphery cellular anatomical structure plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F, G, H	IPR022357	Major intrinsic protein, conserved site	Conserved Site
A, B, C, D, E A, B, C, D, E, F, G, H	IPR023743	Aquaporin Z	Family
A, B, C, D, E A, B, C, D, E, F, G, H	IPR034294	Aquaporin transporter	Family
A, B, C, D, E A, B, C, D, E, F, G, H	IPR023271	Aquaporin-like	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H	IPR000425	Major intrinsic protein	Family

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F, G, H	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F, G, H	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B, C, D, E A, B, C, D, E, F, G, H	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Channels: Aquaporins and Glyceroporins	AqpZ aquaporin showing two conformations of Arg-189

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.