6K6K

The crystal structure of light-driven cyanobacterial chloride importer (N63A/P118A) Mastigocladopsis repens

• PDB DOI: https://doi.org/10.2210/pdb6K6K/pdb

• Classification: MEMBRANE PROTEIN
• Organism(s): Mastigocladopsis repens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2019-06-03 Released: 2020-06-03 
• Deposition Author(s): Yun, J.H., Park, J.H., Jin, Z., Ohki, M., Wang, Y., Lupala, C.S., Kim, M., Liu, H., Park, S.Y., Lee, W.
• Funding Organization(s): National Research Foundation (Korea)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.268 
• R-Value Work: 0.212 
• R-Value Observed: 0.214 

Starting Model: experimental

Literature

The crystal structure of light-driven cyanobacterial chloride importer (N63A/P118A) Mastigocladopsis repens

Yun, J.H., Park, J.H., Jin, Z., Ohki, M., Wang, Y., Lupala, C.S., Kim, M., Liu, H., Park, S.Y., Lee, W.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C3  (Explore in 3D)
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 27.48 kDa 
• Atom Count: 1,887 
• Modelled Residue Count: 219 
• Deposited Residue Count: 232 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cyanobacterial chloride importer	A	232	Mastigocladopsis repens	Mutation(s): 0

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
RET (Subject of Investigation/LOI)	D [auth A]	RETINAL C20 H28 O NCYCYZXNIZJOKI-OVSJKPMPSA-N
OLA	E [auth A], F [auth A], G [auth A], H [auth A]	OLEIC ACID C18 H34 O2 ZQPPMHVWECSIRJ-KTKRTIGZSA-N
CL	B [auth A], C [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.268 
• R-Value Work: 0.212 
• R-Value Observed: 0.214 
• Space Group: P 6₃ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 60.972	α = 90
b = 60.972	β = 90
c = 205.574	γ = 120

Software Package:

Software Name	Purpose
PHENIX	refinement
Coot	model building
PHENIX	phasing
MxDC	data collection
HKL-2000	data scaling

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2020-06-03 
Deposition Author(s): Yun, J.H., Park, J.H., Jin, Z., Ohki, M., Wang, Y., Lupala, C.S., Kim, M., Liu, H., Park, S.Y., Lee, W.

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Funding Organization	Location	Grant Number
National Research Foundation (Korea)	Korea, Republic Of	20171A2B2008483
National Research Foundation (Korea)	Korea, Republic Of	20161A6A3A04010213

Revision History  

• Version 1.0: 2020-06-03
  Type: Initial release
  
• Version 1.1: 2023-11-22
  Changes: Data collection, Database references, Refinement description
• Version 1.2: 2024-10-30
  Changes: Structure summary