2YXG

Crystal structure of Dihyrodipicolinate Synthase (dapA)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.158 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of dihydrodipicolinate synthase from Methanocaldococcus jannaschii.

Padmanabhan, B.Strange, R.W.Antonyuk, S.V.Ellis, M.J.Hasnain, S.S.Iino, H.Agari, Y.Bessho, Y.Yokoyama, S.

(2009) Acta Crystallogr.,Sect.F 65: 1222-1226

  • DOI: 10.1107/S174430910904651X

  • PubMed Abstract: 
  • In bacteria and plants, dihydrodipicolinate synthase (DHDPS) plays a key role in the (S)-lysine biosynthesis pathway. DHDPS catalyzes the first step of the condensation of (S)-aspartate-beta-semialdehyde and pyruvate to form an unstable compound, (4S ...

    In bacteria and plants, dihydrodipicolinate synthase (DHDPS) plays a key role in the (S)-lysine biosynthesis pathway. DHDPS catalyzes the first step of the condensation of (S)-aspartate-beta-semialdehyde and pyruvate to form an unstable compound, (4S)-4-hydroxy-2,3,4,5-tetrahydro-(2S)-dipicolinic acid. The activity of DHDPS is allosterically regulated by (S)-lysine, a feedback inhibitor. The crystal structure of DHDPS from Methanocaldococcus jannaschii (MjDHDPS) was solved by the molecular-replacement method and was refined to 2.2 A resolution. The structure revealed that MjDHDPS forms a functional homotetramer, as also observed in Escherichia coli DHDPS, Thermotoga maritima DHDPS and Bacillus anthracis DHDPS. The binding-site region of MjDHDPS is essentially similar to those found in other known DHDPS structures.


    Organizational Affiliation

    Systems and Structural Biology Center, Yokohama Institute, RIKEN, 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan. bpadmanabhan@hotmail.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Dihydrodipicolinate synthase
A, B, C, D
289Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440)Mutation(s): 0 
Gene Names: dapA
EC: 4.3.3.7
Find proteins for Q57695 (Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440))
Go to UniProtKB:  Q57695
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.158 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 80.469α = 90.00
b = 76.532β = 106.87
c = 101.863γ = 90.00
Software Package:
Software NamePurpose
MAR345dtbdata collection
MOLREPphasing
SCALEPACKdata scaling
REFMACrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-10-30
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance