4FBZ

Crystal structure of deltarhodopsin from Haloterrigena thermotolerans


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.235 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structure of deltarhodopsin-3 from Haloterrigena thermotolerans

Zhang, J.Mizuno, K.Murata, Y.Koide, H.Murakami, M.Ihara, K.Kouyama, T.

(2013) Proteins 81: 1585-1592

  • DOI: 10.1002/prot.24316

  • PubMed Abstract: 
  • Deltarhodopsin, a new member of the microbial rhodopsin family, functions as a light-driven proton pump. Here, we report the three-dimensional structure of deltarhodopsin (dR3) from Haloterrigena thermotolerans at 2.7 Å resolution. A crystal belongin ...

    Deltarhodopsin, a new member of the microbial rhodopsin family, functions as a light-driven proton pump. Here, we report the three-dimensional structure of deltarhodopsin (dR3) from Haloterrigena thermotolerans at 2.7 Å resolution. A crystal belonging to space group R32 (a, b = 111.71 Å, c = 198.25 Å) was obtained by the membrane fusion method. In this crystal, dR3 forms a trimeric structure as observed for bacteriorhodopsin (bR). Structural comparison of dR with bR showed that the inner part (the proton release and uptake pathways) is highly conserved. Meanwhile, residues in the protein-protein contact region are largely altered so that the diameter of the trimeric structure at the cytoplasmic side is noticeably larger in dR3. Unlike bR, dR3 possesses a helical segment at the C-terminal region that fills the space between the AB and EF loops. A significant difference is also seen in the FG loop, which is one residue longer in dR3. Another peculiar property of dR3 is a highly crowded distribution of positively charged residues on the cytoplasmic surface, which may be relevant to a specific interaction with some cytoplasmic component.


    Organizational Affiliation

    Department of Physics, Graduate School of Science, Nagoya University, Nagoya, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
deltarhodopsin
A
241Haloterrigena thermotoleransGene Names: dop
Find proteins for I4DST7 (Haloterrigena thermotolerans)
Go to UniProtKB:  I4DST7
Small Molecules
Ligands 6 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

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A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
RET
Query on RET

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A
RETINAL
C20 H28 O
NCYCYZXNIZJOKI-OVSJKPMPSA-N
 Ligand Interaction
22B
Query on 22B

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A
BACTERIORUBERIN
C50 H76 O4
UVCQMCCIAHQDAF-CUMPQFAQSA-N
 Ligand Interaction
L2P
Query on L2P

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A
2,3-DI-PHYTANYL-GLYCEROL
1,2-DI-1-(3,7,11,15-TETRAMETHYL-HEXADECANE)-SN-GLYCEROL
C43 H88 O3
ISDBCJSGCHUHFI-UMZPFTBHSA-N
 Ligand Interaction
SQL
Query on SQL

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A
(6E,10E,14E,18E)-2,6,10,15,19,23-hexamethyltetracosa-2,6,10,14,18,22-hexaene
squalene
C30 H50
YYGNTYWPHWGJRM-AAJYLUCBSA-N
 Ligand Interaction
BNG
Query on BNG

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A
B-NONYLGLUCOSIDE
C15 H30 O6
QFAPUKLCALRPLH-UXXRCYHCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.235 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 111.710α = 90.00
b = 111.710β = 90.00
c = 198.250γ = 120.00
Software Package:
Software NamePurpose
CNSphasing
SCALAdata scaling
CNSrefinement
MOSFLMdata reduction
ADSCdata collection

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2012-05-23 
  • Released Date: 2013-05-15 
  • Deposition Author(s): Kouyama, T.

Revision History 

  • Version 1.0: 2013-05-15
    Type: Initial release
  • Version 1.1: 2013-10-09
    Type: Database references