5ZTL

Non-cryogenic structure of light-driven chloride pump having an NTQ motif

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.240 
  • R-Value Observed: 0.242 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Non-cryogenic structure of a chloride pump provides crucial clues to temperature-dependent channel transport efficiency

Yun, J.H., Li, X., Park, J.H., Wang, Y., Ohki, M., Jin, Z., Lee, W., Park, S.Y., Hu, H., Li, C., Zatsepin, N., Hunter, M.S., Sierra, R.G., Koralek, J., Yoon, C.H., Cho, H.S., Weierstall, U., Tang, L., Liu, H., Lee, W.

(2019) J Biol Chem 294: 794-804

  • DOI: 10.1074/jbc.RA118.004038
  • Structures With Same Primary Citation

  • PubMed Abstract: 

    • Non-cryogenic protein structures determined at ambient temperature may disclose significant information about protein activity. Chloride-pumping rhodopsin (ClR) exhibits a trend to hyperactivity induced by a change in the photoreaction rate because o ...

    Non-cryogenic protein structures determined at ambient temperature may disclose significant information about protein activity. Chloride-pumping rhodopsin (ClR) exhibits a trend to hyperactivity induced by a change in the photoreaction rate because of a gradual decrease in temperature. Here, to track the structural changes that explain the differences in CIR activity resulting from these temperature changes, we used serial femtosecond crystallography (SFX) with an X-ray free electron laser (XFEL) to determine the non-cryogenic structure of ClR at a resolution of 1.85 Å, and compared this structure with a cryogenic ClR structure obtained with synchrotron X-ray crystallography. The XFEL-derived ClR structure revealed that the all- trans retinal (ATR) region and positions of two coordinated chloride ions slightly differed from those of the synchrotron-derived structure. Moreover, the XFEL structure enabled identification of one additional water molecule forming a hydrogen bond network with a chloride ion. Analysis of the channel cavity and a difference distance matrix plot (DDMP) clearly revealed additional structural differences. B-factor information obtained from the non-cryogenic structure supported a motility change on the residual main and side chains as well as of chloride and water molecules because of temperature effects. Our results indicate that non-cryogenic structures and time-resolved XFEL experiments could contribute to a better understanding of the chloride-pumping mechanism of ClR and other ion pumps.

    Organizational Affiliation: 

    From the Department of Biochemistry, College of Life Science & Biotechnology, Yonsei University, Seoul 03722, South Korea, wlee@spin.yonsei.ac.kr.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Chloride pumping rhodopsinA275Nonlabens marinusMutation(s): 0 
Gene Names: ClR, NMS_1267
Find proteins for W8VZW3 (Nonlabens marinus S1-08)
Explore W8VZW3 
Go to UniProtKB:  W8VZW3
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
RET
Query on RET
Download CCD File 
A
RETINAL
C20 H28 O
NCYCYZXNIZJOKI-OVSJKPMPSA-N		 Ligand Interaction
OLA
Query on OLA
Download CCD File 
A
OLEIC ACID
C18 H34 O2
ZQPPMHVWECSIRJ-KTKRTIGZSA-N		 Ligand Interaction
CL
Query on CL
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.240 
  • R-Value Observed: 0.242 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 103.36α = 90
b = 50.09β = 109.65
c = 69.4γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
Cootmodel building
CrystFELdata scaling
PHASERphasing
PHENIXmodel building

Structure Validation

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View more in-depth experimental data

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Research Foundation (Korea)Korea, Republic OfNRF-2017R1A2B2008483
National Research Foundation (Korea)Korea, Republic OfNRF-2016R1A6A3A04010213
National Natural Science Foundation of ChinaChina11575021, U1530401 and U1430237)

Revision History 

  • Version 1.0: 2018-12-05
    Type: Initial release
  • Version 1.1: 2019-01-02
    Changes: Data collection
  • Version 1.2: 2019-01-30
    Changes: Data collection, Database references