[English] 日本語
![](img/lk-miru.gif)
- PDB-6u8y: Structure of the membrane-bound sulfane sulfur reductase (MBS), a... -
+
Open data
-
Basic information
Entry | Database: PDB / ID: 6u8y | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Title | Structure of the membrane-bound sulfane sulfur reductase (MBS), an archaeal respiratory membrane complex | |||||||||
![]() |
| |||||||||
![]() | MEMBRANE PROTEIN / cryoEM / respiratory system | |||||||||
Function / homology | ![]() NADH dehydrogenase (quinone) / : / monoatomic ion transmembrane transporter activity / monoatomic cation transmembrane transporter activity / oxidoreductase activity, acting on NAD(P)H / NADH dehydrogenase (ubiquinone) activity / quinone binding / NAD binding / 4 iron, 4 sulfur cluster binding / membrane => GO:0016020 ...NADH dehydrogenase (quinone) / : / monoatomic ion transmembrane transporter activity / monoatomic cation transmembrane transporter activity / oxidoreductase activity, acting on NAD(P)H / NADH dehydrogenase (ubiquinone) activity / quinone binding / NAD binding / 4 iron, 4 sulfur cluster binding / membrane => GO:0016020 / membrane / metal ion binding / plasma membrane Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4 Å | |||||||||
![]() | Yu, H.J. / Li, H.L. | |||||||||
Funding support | ![]()
| |||||||||
![]() | ![]() Title: Structure of the respiratory MBS complex reveals iron-sulfur cluster catalyzed sulfane sulfur reduction in ancient life. Authors: Hongjun Yu / Dominik K Haja / Gerrit J Schut / Chang-Hao Wu / Xing Meng / Gongpu Zhao / Huilin Li / Michael W W Adams / ![]() ![]() Abstract: Modern day aerobic respiration in mitochondria involving complex I converts redox energy into chemical energy and likely evolved from a simple anaerobic system now represented by hydrogen gas- ...Modern day aerobic respiration in mitochondria involving complex I converts redox energy into chemical energy and likely evolved from a simple anaerobic system now represented by hydrogen gas-evolving hydrogenase (MBH) where protons are the terminal electron acceptor. Here we present the cryo-EM structure of an early ancestor in the evolution of complex I, the elemental sulfur (S)-reducing reductase MBS. Three highly conserved protein loops linking cytoplasmic and membrane domains enable scalable energy conversion in all three complexes. MBS contains two proton pumps compared to one in MBH and likely conserves twice the energy. The structure also reveals evolutionary adaptations of MBH that enabled S reduction by MBS catalyzed by a site-differentiated iron-sulfur cluster without participation of protons or amino acid residues. This is the simplest mechanism proposed for reduction of inorganic or organic disulfides. It is of fundamental significance in the iron and sulfur-rich volcanic environments of early earth and possibly the origin of life. MBS provides a new perspective on the evolution of modern-day respiratory complexes and of catalysis by biological iron-sulfur clusters. | |||||||||
History |
|
-
Structure visualization
Movie |
![]() |
---|---|
Structure viewer | Molecule: ![]() ![]() |
-
Downloads & links
-
Download
PDBx/mmCIF format | ![]() | 1 MB | Display | ![]() |
---|---|---|---|---|
PDB format | ![]() | 861.1 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.1 MB | Display | ![]() |
---|---|---|---|---|
Full document | ![]() | 1.1 MB | Display | |
Data in XML | ![]() | 142.6 KB | Display | |
Data in CIF | ![]() | 229.1 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 20692MC M: map data used to model this data C: citing same article ( |
---|---|
Similar structure data |
-
Links
-
Assembly
Deposited unit | ![]()
|
---|---|
1 |
|
-
Components
-Monovalent cation/H+ antiporter subunit ... , 5 types, 10 molecules AaBbCcEeGg
#1: Protein | Mass: 19134.307 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #2: Protein | Mass: 9328.299 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #3: Protein | Mass: 13550.896 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #5: Protein | Mass: 25691.111 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #6: Protein | Mass: 12073.443 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
---|
-Protein , 2 types, 4 molecules DdMm
#4: Protein | Mass: 10560.460 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #12: Protein | Mass: 33677.570 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
---|
-NADH dehydrogenase subunit ... , 6 types, 12 molecules HhXxJjKkLlNn
#7: Protein | Mass: 53019.332 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #8: Protein | Mass: 67561.906 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #9: Protein | Mass: 22731.473 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #10: Protein | Mass: 20966.279 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #11: Protein | Mass: 44756.504 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #13: Protein | Mass: 24746.895 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
---|
-Non-polymers , 1 types, 6 molecules ![](data/chem/img/SF4.gif)
#14: Chemical | ChemComp-SF4 / |
---|
-Details
Has ligand of interest | N |
---|
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
---|---|
EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-
Sample preparation
Component | Name: respiratory membrane complex / Type: COMPLEX / Entity ID: #1-#13 / Source: NATURAL |
---|---|
Source (natural) | Organism: ![]() ![]() |
Buffer solution | pH: 8.2 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
-
Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
---|---|
Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 1.7 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
-
Processing
Software | Name: PHENIX / Version: 1.16_3549: / Classification: refinement | ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
EM software |
| ||||||||||||||||||||||||
CTF correction | Type: PHASE FLIPPING ONLY | ||||||||||||||||||||||||
Symmetry | Point symmetry: C2 (2 fold cyclic) | ||||||||||||||||||||||||
3D reconstruction | Resolution: 4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 203673 / Symmetry type: POINT | ||||||||||||||||||||||||
Refinement | Highest resolution: 4 Å | ||||||||||||||||||||||||
Refine LS restraints |
|