2PGE

Crystal structure of MenC from Desulfotalea psychrophila LSv54


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.225 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Loss of quaternary structure is associated with rapid sequence divergence in the OSBS family.

Odokonyero, D.Sakai, A.Patskovsky, Y.Malashkevich, V.N.Fedorov, A.A.Bonanno, J.B.Fedorov, E.V.Toro, R.Agarwal, R.Wang, C.Ozerova, N.D.Yew, W.S.Sauder, J.M.Swaminathan, S.Burley, S.K.Almo, S.C.Glasner, M.E.

(2014) Proc.Natl.Acad.Sci.USA 111: 8535-8540

  • DOI: 10.1073/pnas.1318703111
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The rate of protein evolution is determined by a combination of selective pressure on protein function and biophysical constraints on protein folding and structure. Determining the relative contributions of these properties is an unsolved problem in ...

    The rate of protein evolution is determined by a combination of selective pressure on protein function and biophysical constraints on protein folding and structure. Determining the relative contributions of these properties is an unsolved problem in molecular evolution with broad implications for protein engineering and function prediction. As a case study, we examined the structural divergence of the rapidly evolving o-succinylbenzoate synthase (OSBS) family, which catalyzes a step in menaquinone synthesis in diverse microorganisms and plants. On average, the OSBS family is much more divergent than other protein families from the same set of species, with the most divergent family members sharing <15% sequence identity. Comparing 11 representative structures revealed that loss of quaternary structure and large deletions or insertions are associated with the family's rapid evolution. Neither of these properties has been investigated in previous studies to identify factors that affect the rate of protein evolution. Intriguingly, one subfamily retained a multimeric quaternary structure and has small insertions and deletions compared with related enzymes that catalyze diverse reactions. Many proteins in this subfamily catalyze both OSBS and N-succinylamino acid racemization (NSAR). Retention of ancestral structural characteristics in the NSAR/OSBS subfamily suggests that the rate of protein evolution is not proportional to the capacity to evolve new protein functions. Instead, structural features that are conserved among proteins with diverse functions might contribute to the evolution of new functions.


    Organizational Affiliation

    Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843-2128;




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MenC
A
377Desulfotalea psychrophila (strain LSv54 / DSM 12343)Mutation(s): 0 
Find proteins for Q6ARP5 (Desulfotalea psychrophila (strain LSv54 / DSM 12343))
Go to UniProtKB:  Q6ARP5
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.225 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 59.130α = 90.00
b = 82.784β = 90.00
c = 89.578γ = 90.00
Software Package:
Software NamePurpose
CBASSdata collection
SHELXDphasing
SHARPphasing
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-04-24
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2014-06-11
    Type: Database references
  • Version 1.4: 2014-08-13
    Type: Database references