Biological Assembly 1

Protein Symmetry: Cyclic - C5 (View in 3D)

Protein Stoichiometry: Homo 5-mer - A5

Macromolecule Content

• Unique protein chains: 1

3KCU

Structure of formate channel

• DOI: 10.2210/pdb3kcu/pdb

• Classification: TRANSPORT PROTEIN
• Deposited: 2009-10-22 Released: 2009-12-01
• Deposition author(s): Wang, Y., Huang, Y., Wang, J., Yan, N., Shi, Y.
• Organism: Escherichia coli
• Expression System: Escherichia coli

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.24 Å
• R-Value Free: 0.232
• R-Value Work: 0.203

wwPDB Validation 3D Report Full Report

Literature

Macromolecules

Classification: TRANSPORT PROTEIN

Total Structure Weight: 155516.55

Membrane Protein

Source: mpstruc | Group: ALPHA-HELICAL

Subgroup Name: Channels : Formate/Nitrite Transporter (FNT) Family

Protein Name: FocA formate transporter at pH 4.0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions	3D Interactions
MA5	A	2-(6-(2-CYCLOHEXYLETHOXY)-TETRAHYDRO-4,5- DIHYDROXY-2(HYDROXYMETHYL)-2H-PYRAN-3-YLOXY)- TETRAHYDRO-6(HYDROXYMETHYL)-2H-PYRAN-3,4,5- TRIOL CYCLOHEXYLETHYL-BETA-D-MALTOSIDE (Synonym) C20 H36 O11 RHXPDNGQJSXOMW-OIIXUNCGSA-N	Poseview Image of MA5 in 3KCU 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)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.24 Å
• R-Value Free: 0.232
• R-Value Work: 0.203
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 101.38	α = 90.00
b = 107.93	β = 90.00
c = 163.13	γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots

Entry History

Deposition Data

• Deposited Date: 2009-10-22
• Released Date: 2009-12-01
• Deposition author(s): Wang, Y., Huang, Y., Wang, J., Yan, N., Shi, Y.

Revision History

• 2011-07-13
  Type: Version format compliance
• 2014-01-22
  Type: Database references