Crystal Structure of AqpZ Tetramer Reveals Two Distinct Arg-189 Conformations Associated with Water Permeation through the Narrowest Constriction of the Water-conducting Channel.

Jiang, J; Daniels, B.V; Fu, D.

Macromolecule Content

Unique protein chains: 1

2ABM

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

DOI: 10.2210/pdb2abm/pdb

Classification: MEMBRANE PROTEIN
Deposited: 2005-07-15 Released: 2005-09-20
Deposition author(s): Jiang, J., Daniels, B.V., Fu, D.
Organism: Escherichia coli
Expression System: Escherichia coli BL21

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 3.2 Å
R-Value Free: 0.242
R-Value Work: 0.186

wwPDB Validation 3D Report Full Report

Literature

Macromolecules

Classification: MEMBRANE PROTEIN

Total Structure Weight: 198456.98

Macromolecule Entities
Molecule	Chains	Length	Organism	Details
Aquaporin Z	A, B, C..., D, E, F, G, HA, B, C, D, E, F, G, H	231	Escherichia coli	Gene Name(s): aqpZ bniP b0875 JW0859
Metabolic Pathways Maps: Reactions: ESCHER BiGG
Protein Feature View - UniProtKB AC: P60844 UniProt Full Protein Feature View for P60844 Find similar proteins by: Sequence \| Structure Show Detailed Protein Feature View for P60844/2ABM

Membrane Protein

Source: mpstruc | Group: ALPHA-HELICAL

Subgroup Name: Channels: Aquaporins and Glyceroporins

Protein Name: AqpZ aquaporin water channel

Small Molecules

Ligands 6 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions	3D Interactions
PEE Query on PEE Download SDF File Download CCD File	A, B, E, F, G	1,2-Dioleoyl-sn-glycero-3-phosphoethanolamine DOPE (Synonym) C₄₁ H₈₃ N O₈ P LVNGJLRDBYCPGB-LDLOPFEMSA-O	Poseview Image of PEE in 2ABM Help Black dashed lines indicate hydrogen bonds, salt bridges, and metal interactions. Green solid line show hydrophobic interactions and green dashed lines show π-π and π-cation interactions. Source Information Interactions are determined by geometric criteria as described in K. Stierand, M. Rarey (2010), Drawing the PDB: Protein-ligand complexes in two dimensions, ACS Med. Chem. Lett., DOI: 10.1021/ml100164p. Ions and some metal complexes are excluded, as well as cases where no interaction profile could be generated. Poseview diagrams can be calculated for approximately 92% of the remaining complexes in the PDB. PoseView is developed at the Center for Bioinformatics Hamburg and jointly provided with BioSolveIT as a community service at the PDB. A stand-alone version is provided by BioSolveIT.	Ligand Explorer NGL Binding Pocket (JSmol) Electron Density (JSmol)
POQ Query on POQ Download SDF File Download CCD File	A	BIS(((3S,4S,5R,6R)-5-(ETHYL(PHOSPHORYLOXY))- 3,4,6-TRIHYDROXY-TETRAHYDRO-2H-PYRAN-2-YL)METHYL) HYDROGEN PHOSPHATE C₁₆ H₃₃ O₂₀ P₃ QTCHWELPTUAUQX-ASCZGESISA-N	Poseview Image of POQ in 2ABM Help Black dashed lines indicate hydrogen bonds, salt bridges, and metal interactions. Green solid line show hydrophobic interactions and green dashed lines show π-π and π-cation interactions. Source Information Interactions are determined by geometric criteria as described in K. Stierand, M. Rarey (2010), Drawing the PDB: Protein-ligand complexes in two dimensions, ACS Med. Chem. Lett., DOI: 10.1021/ml100164p. Ions and some metal complexes are excluded, as well as cases where no interaction profile could be generated. Poseview diagrams can be calculated for approximately 92% of the remaining complexes in the PDB. PoseView is developed at the Center for Bioinformatics Hamburg and jointly provided with BioSolveIT as a community service at the PDB. A stand-alone version is provided by BioSolveIT.	Ligand Explorer NGL Binding Pocket (JSmol) Electron Density (JSmol)
AGA Query on AGA Download SDF File Download CCD File	C, G	(1S)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}- 1-[(PENTANOYLOXY)METHYL]ETHYL OCTANOATE PHOSPHATIDYL GLYCEROL (Synonym) C₁₉ H₃₆ O₁₀ P UQSXQYRZHMGKIE-DLBZAZTESA-M	Poseview Image of AGA in 2ABM Help Black dashed lines indicate hydrogen bonds, salt bridges, and metal interactions. Green solid line show hydrophobic interactions and green dashed lines show π-π and π-cation interactions. Source Information Interactions are determined by geometric criteria as described in K. Stierand, M. Rarey (2010), Drawing the PDB: Protein-ligand complexes in two dimensions, ACS Med. Chem. Lett., DOI: 10.1021/ml100164p. Ions and some metal complexes are excluded, as well as cases where no interaction profile could be generated. Poseview diagrams can be calculated for approximately 92% of the remaining complexes in the PDB. PoseView is developed at the Center for Bioinformatics Hamburg and jointly provided with BioSolveIT as a community service at the PDB. A stand-alone version is provided by BioSolveIT.	Ligand Explorer NGL Binding Pocket (JSmol) Electron Density (JSmol)
BGL Query on BGL Download SDF File Download CCD File	A, B, E	B-2-OCTYLGLUCOSIDE C₁₄ H₂₈ O₆ BVHPDIWLWHHJPD-RKQHYHRCSA-N	Poseview Image of BGL in 2ABM Help Black dashed lines indicate hydrogen bonds, salt bridges, and metal interactions. Green solid line show hydrophobic interactions and green dashed lines show π-π and π-cation interactions. Source Information Interactions are determined by geometric criteria as described in K. Stierand, M. Rarey (2010), Drawing the PDB: Protein-ligand complexes in two dimensions, ACS Med. Chem. Lett., DOI: 10.1021/ml100164p. Ions and some metal complexes are excluded, as well as cases where no interaction profile could be generated. Poseview diagrams can be calculated for approximately 92% of the remaining complexes in the PDB. PoseView is developed at the Center for Bioinformatics Hamburg and jointly provided with BioSolveIT as a community service at the PDB. A stand-alone version is provided by BioSolveIT.	Ligand Explorer NGL Binding Pocket (JSmol) Electron Density (JSmol)
3PG Query on 3PG Download SDF File Download CCD File	C, G	3-PHOSPHOGLYCERIC ACID C₃ H₇ O₇ P OSJPPGNTCRNQQC-UWTATZPHSA-N	Poseview Image of 3PG in 2ABM Help Black dashed lines indicate hydrogen bonds, salt bridges, and metal interactions. Green solid line show hydrophobic interactions and green dashed lines show π-π and π-cation interactions. Source Information Interactions are determined by geometric criteria as described in K. Stierand, M. Rarey (2010), Drawing the PDB: Protein-ligand complexes in two dimensions, ACS Med. Chem. Lett., DOI: 10.1021/ml100164p. Ions and some metal complexes are excluded, as well as cases where no interaction profile could be generated. Poseview diagrams can be calculated for approximately 92% of the remaining complexes in the PDB. PoseView is developed at the Center for Bioinformatics Hamburg and jointly provided with BioSolveIT as a community service at the PDB. A stand-alone version is provided by BioSolveIT.	Ligand Explorer NGL Binding Pocket (JSmol) Electron Density (JSmol)
PO4 Query on PO4 Download SDF File Download CCD File	B, C, F, G	PHOSPHATE ION O₄ P NBIIXXVUZAFLBC-UHFFFAOYSA-K	Poseview Image of PO4 in 2ABM Help Black dashed lines indicate hydrogen bonds, salt bridges, and metal interactions. Green solid line show hydrophobic interactions and green dashed lines show π-π and π-cation interactions. Source Information Interactions are determined by geometric criteria as described in K. Stierand, M. Rarey (2010), Drawing the PDB: Protein-ligand complexes in two dimensions, ACS Med. Chem. Lett., DOI: 10.1021/ml100164p. Ions and some metal complexes are excluded, as well as cases where no interaction profile could be generated. Poseview diagrams can be calculated for approximately 92% of the remaining complexes in the PDB. PoseView is developed at the Center for Bioinformatics Hamburg and jointly provided with BioSolveIT as a community service at the PDB. A stand-alone version is provided by BioSolveIT.	Ligand Explorer NGL Binding Pocket (JSmol) Electron Density (JSmol)