4Y6C

Q17M crystal structure of Podosopora anserina putative kinesin light chain nearly identical TPR-like repeats


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.77 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.173 
  • R-Value Observed: 0.175 

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

  • 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%. 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.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ANSERINA PUTATIVE KINESIN LIGHT chain229Podospora 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
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A090CRQ5
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
MSE
Query on MSE
A
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.77 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.173 
  • R-Value Observed: 0.175 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 81.103α = 90
b = 91.242β = 90
c = 30.839γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
Cootmodel building
SHELXDEphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-10-07
    Type: Initial release
  • Version 1.1: 2015-10-21
    Changes: Database references
  • Version 1.2: 2015-11-11
    Changes: Database references
  • Version 1.3: 2017-11-01
    Changes: Author supporting evidence, Database references, Derived calculations