3RUW

Crystal structure of Cpn-rls in complex with ADP-AlFx from Methanococcus maripaludis

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.175 

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Literature

Mechanism of nucleotide sensing in group II chaperonins.

Pereira, J.H., Ralston, C.Y., Douglas, N.R., Kumar, R., Lopez, T., McAndrew, R.P., Knee, K.M., King, J.A., Frydman, J., Adams, P.D.

(2012) EMBO J 31: 731-740

  • DOI: 10.1038/emboj.2011.468
  • Primary Citation of Related Structures:  
    3RUQ, 3RUS, 3RUV, 3RUW

  • PubMed Abstract: 

    • Group II chaperonins mediate protein folding in an ATP-dependent manner in eukaryotes and archaea. The binding of ATP and subsequent hydrolysis promotes the closure of the multi-subunit rings where protein folding occurs. The mechanism by which local changes in the nucleotide-binding site are communicated between individual subunits is unknown ...

    Group II chaperonins mediate protein folding in an ATP-dependent manner in eukaryotes and archaea. The binding of ATP and subsequent hydrolysis promotes the closure of the multi-subunit rings where protein folding occurs. The mechanism by which local changes in the nucleotide-binding site are communicated between individual subunits is unknown. The crystal structure of the archaeal chaperonin from Methanococcus maripaludis in several nucleotides bound states reveals the local conformational changes associated with ATP hydrolysis. Residue Lys-161, which is extremely conserved among group II chaperonins, forms interactions with the γ-phosphate of ATP but shows a different orientation in the presence of ADP. The loss of the ATP γ-phosphate interaction with Lys-161 in the ADP state promotes a significant rearrangement of a loop consisting of residues 160-169. We propose that Lys-161 functions as an ATP sensor and that 160-169 constitutes a nucleotide-sensing loop (NSL) that monitors the presence of the γ-phosphate. Functional analysis using NSL mutants shows a significant decrease in ATPase activity, suggesting that the NSL is involved in timing of the protein folding cycle.

    Organizational Affiliation: 

    Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ChaperoninA, B, C, D543Methanococcus maripaludisMutation(s): 4 
UniProt
Find proteins for Q877G8 (Methanococcus maripaludis)
Explore Q877G8 
Go to UniProtKB:  Q877G8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ877G8
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP
Download Ideal Coordinates CCD File 
F [auth A],
K [auth B],
P [auth C],
U [auth D]		ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N		 Ligand Interaction
SO4
Query on SO4
Download Ideal Coordinates CCD File 
H [auth A],
I [auth A],
M [auth B],
N [auth B],
R [auth C],
H [auth A],
I [auth A],
M [auth B],
N [auth B],
R [auth C],
S [auth C],
W [auth D],
X [auth D]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L		 Ligand Interaction
AF3
Query on AF3
Download Ideal Coordinates CCD File 
G [auth A],
L [auth B],
Q [auth C],
V [auth D]		ALUMINUM FLUORIDE
Al F3
KLZUFWVZNOTSEM-UHFFFAOYSA-K		 Ligand Interaction
MG
Query on MG
Download Ideal Coordinates CCD File 
E [auth A],
J [auth B],
O [auth C],
T [auth D]		MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.175 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 162.552α = 90
b = 184.464β = 90
c = 185.495γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-01-04
    Type: Initial release
  • Version 1.1: 2012-02-15
    Changes: Database references