Biological Assembly 1  

 3D View: Structure

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

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

Macromolecule Content

• Total Structure Weight: 40.78 kDa 
• Atom Count: 2588 
• Modelled Residue Count: 318 
• Deposited Residue Count: 348 
• Unique protein chains: 1

5NF8

Solution structure of detergent-solubilized Rcf1, a yeast mitochondrial inner membrane protein involved in respiratory Complex III/IV supercomplex formation

• DOI: 10.2210/pdb5NF8/pdb
• BMRB: 34115

• Classification: MEMBRANE PROTEIN
• Organism(s): Saccharomyces cerevisiae
• Expression System: Escherichia coli K-12
• Mutation(s): No 


• Deposited: 2017-03-13 Released: 2018-02-28 
• Deposition Author(s): Zhou, S., Pettersson, P., Sjoholm, J., Sjostrand, D., Hogbom, M., Brzezinski, P., Maler, L., Adelroth, P.
• Funding Organization(s): Knut and Alice Wallenberg Foundation

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 15 
• Selection Criteria: structures with the lowest energy 

Literature

Solution NMR structure of yeast Rcf1, a protein involved in respiratory supercomplex formation.

Zhou, S., Pettersson, P., Huang, J., Sjoholm, J., Sjostrand, D., Pomes, R., Hogbom, M., Brzezinski, P., Maler, L., Adelroth, P.

(2018) Proc Natl Acad Sci U S A 115: 3048-3053

• PubMed: 29507228 
• DOI: 10.1073/pnas.1712061115
• Primary Citation of Related Structures:  
  5NF8


• PubMed Abstract: 
  

The Saccharomyces cerevisiae respiratory supercomplex factor 1 (Rcf1) protein is located in the mitochondrial inner membrane where it is involved in formation of supercomplexes composed of respiratory complexes III and IV. We report the solution structure of Rcf1, which forms a dimer in dodecylphosphocholine (DPC) micelles, where each monomer consists of a bundle of five transmembrane (TM) helices and a short flexible soluble helix (SH). Three TM helices are unusually charged and provide the dimerization interface consisting of 10 putative salt bridges, defining a "charge zipper" motif. The dimer structure is supported by molecular dynamics (MD) simulations in DPC, although the simulations show a more dynamic dimer interface than the NMR data. Furthermore, CD and NMR data indicate that Rcf1 undergoes a structural change when reconstituted in liposomes, which is supported by MD data, suggesting that the dimer structure is unstable in a planar membrane environment. Collectively, these data indicate a dynamic monomer-dimer equilibrium. Furthermore, the Rcf1 dimer interacts with cytochrome c , suggesting a role as an electron-transfer bridge between complexes III and IV. The Rcf1 structure will help in understanding its functional roles at a molecular level.

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Organizational Affiliation: 

Department of Biochemistry and Biophysics, Stockholm University, 10691 Stockholm, Sweden; [e-mail] [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Respiratory supercomplex factor 1, mitochondrial	A, B	174	Saccharomyces cerevisiae	Mutation(s): 0  Gene Names: RCF1, AIM31, SCRG_01865
Membrane protein Mpstruc	Group:  TRANSMEMBRANE PROTEINS: ALPHA-HELICAL		Sub Group:  Electron Transport Chain Super Complexes (Respirasome)	Protein:  Rcf1 protein involved in electron chain super-complex formation
Find proteins for Q03713 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore Q03713  Go to UniProtKB:  Q03713

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 15 
• Selection Criteria: structures with the lowest energy 
• OLDERADO: 5NF8 Olderado

Structure Validation

Entry History & Funding Information

Deposition Data

• Deposited Date: 2017-03-13 
• Released Date: 2018-02-28 
Deposition Author(s): Zhou, S., Pettersson, P., Sjoholm, J., Sjostrand, D., Hogbom, M., Brzezinski, P., Maler, L., Adelroth, P.

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Funding Organization	Location	Grant Number
Knut and Alice Wallenberg Foundation	Sweden	--

Revision History  

• Version 1.0: 2018-02-28
  Type: Initial release
  
• Version 1.1: 2018-03-14
  Changes: Database references
• Version 1.2: 2018-03-28
  Changes: Data collection, Database references
• Version 1.3: 2019-05-08
  Changes: Data collection