4Y6W

Crystal structure of Podosopora anserina putative kinesin light chain nearly identical TPR-like repeats


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.59 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.179 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

A Naturally Occurring Repeat Protein with High Internal Sequence Identity Defines a New Class of TPR-like Proteins.

Marold, J.D.Kavran, J.M.Bowman, G.D.Barrick, D.

(2015) Structure 23: 2055-2065

  • DOI: 10.1016/j.str.2015.07.022
  • Primary Citation of Related Structures:  
    4Y6W, 4Y6C

  • PubMed Abstract: 
  • Linear repeat proteins often have high structural similarity and low (∼25%) pairwise sequence identities (PSI) among modules. We identified a unique P. anserina (Pa) sequence with tetratricopeptide repeat (TPR) homology, which contains longer (42 residue) repeats (42PRs) with an average PSI >91% ...

    Linear repeat proteins often have high structural similarity and low (∼25%) pairwise sequence identities (PSI) among modules. We identified a unique P. anserina (Pa) sequence with tetratricopeptide repeat (TPR) homology, which contains longer (42 residue) repeats (42PRs) with an average PSI >91%. We determined the crystal structure of five tandem Pa 42PRs to 1.6 Å, and examined the stability and solution properties of constructs containing three to six Pa 42PRs. Compared with 34-residue TPRs (34PRs), Pa 42PRs have a one-turn extension of each helix, and bury more surface area. Unfolding transitions shift to higher denaturant concentration and become sharper as repeats are added. Fitted Ising models show Pa 42PRs to be more cooperative than consensus 34PRs, with increased magnitudes of intrinsic and interfacial free energies. These results demonstrate the tolerance of the TPR motif to length variation, and provide a basis to understand the effects of helix length on intrinsic/interfacial stability.


    Organizational Affiliation

    T.C. Jenkins Department of Biophysics, Johns Hopkins University, Baltimore, MD 21218, USA. Electronic address: barrick@jhu.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
NaB(AB)3ACb - light chain TPR-like repeatsA229Podospora anserinaMutation(s): 0 
Gene Names: CDP31375.1
UniProt
Find proteins for A0A090CRQ5 (Podospora anserina (strain S / ATCC MYA-4624 / DSM 980 / FGSC 10383))
Explore A0A090CRQ5 
Go to UniProtKB:  A0A090CRQ5
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.59 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.179 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 81.071α = 90
b = 92.341β = 90
c = 30.817γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PHASERphasing
SCALEPACKdata scaling
Cootmodel building

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01GM068462

Revision History  (Full details and data files)

  • Version 1.0: 2015-10-07
    Type: Initial release
  • Version 1.1: 2015-11-11
    Changes: Database references
  • Version 1.2: 2017-09-20
    Changes: Author supporting evidence, Database references, Derived calculations
  • Version 1.3: 2019-12-25
    Changes: Author supporting evidence