1G31

GP31 CO-CHAPERONIN FROM BACTERIOPHAGE T4

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.225 
  • R-Value Observed: 0.225 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history. 


Literature

Structural adaptations in the specialized bacteriophage T4 co-chaperonin Gp31 expand the size of the Anfinsen cage.

Hunt, J.F., van der Vies, S.M., Henry, L., Deisenhofer, J.

(1997) Cell 90: 361-371

  • DOI: 10.1016/s0092-8674(00)80343-8
  • Primary Citation of Related Structures:  
    1G31

  • PubMed Abstract: 

    • The Gp31 protein from bacteriophage T4 functionally substitutes for the bacterial co-chaperonin GroES in assisted protein folding reactions both in vitro and in vivo. But Gp31 is required for the folding and/or assembly of the T4 major capsid protein Gp23, and this requirement cannot be satisfied by GroES ...

    The Gp31 protein from bacteriophage T4 functionally substitutes for the bacterial co-chaperonin GroES in assisted protein folding reactions both in vitro and in vivo. But Gp31 is required for the folding and/or assembly of the T4 major capsid protein Gp23, and this requirement cannot be satisfied by GroES. The 2.3 A crystal structure of Gp31 shows that its tertiary and quaternary structures are similar to those of GroES despite the existence of only 14% sequence identity between the two proteins. However, Gp31 shows a series of structural adaptations which will increase the size and the hydrophilicity of the "Anfinsen cage," the enclosed cavity within the GroEL/GroES complex that is the location of the chaperonin-assisted protein folding reaction.

    Related Citations: 
    • Interplay of Structure and Disorder in Cochaperonin Mobile Loops
      Landry, S.J., Taher, A., Georgopoulos, C., Van Der Vies, S.M.
      (1996) Proc Natl Acad Sci U S A 93: 11622
    • Bacteriophage T4 Encodes a Co-Chaperonin that Can Substitute for Escherichia Coli Groes in Protein Folding
      Van Der Vies, S.M., Gatenby, A.A., Georgopoulos, C.
      (1994) Nature 368: 654
    • A Factor Preventing the Major Head Protein of Bacteriophage T4 from Random Aggregation
      Laemmli, U.K., Beguin, F., Gujer-Kellenberger, G.
      (1970) J Mol Biol 47: 69
    Organizational Affiliation: 

    Howard Hughes Medical Institute and Department of Biochemistry, The University of Texas Southwestern Medical Center, Dallas 75235-9050, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GP31
A, B, C, D, E, F, G
A, B, C, D, E, F, G
111Escherichia virus T4Mutation(s): 0 
Gene Names: 31
UniProt
Find proteins for P17313 (Enterobacteria phage T4)
Explore P17313 
Go to UniProtKB:  P17313
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP17313
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4
Download Ideal Coordinates CCD File 
AA [auth E],
CA [auth F],
FA [auth G],
H [auth A],
HA [auth G],
AA [auth E],
CA [auth F],
FA [auth G],
H [auth A],
HA [auth G],
IA [auth G],
J [auth A],
JA [auth G],
K [auth A],
L [auth A],
N [auth B],
P [auth B],
Q [auth B],
R [auth B],
T [auth C],
V [auth C],
W [auth C],
X [auth C],
Y [auth D]
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K		 Ligand Interaction
K
Query on K
Download Ideal Coordinates CCD File 
BA [auth E],
DA [auth F],
EA [auth F],
GA [auth G],
I [auth A],
BA [auth E],
DA [auth F],
EA [auth F],
GA [auth G],
I [auth A],
KA [auth G],
M [auth A],
O [auth B],
S [auth B],
U [auth C],
Z [auth D]
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.225 
  • R-Value Observed: 0.225 
  • Space Group: P 42 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 157.677α = 90
b = 157.677β = 90
c = 90.932γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLORphasing

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-08-26
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-11-29
    Changes: Derived calculations, Other