2JG7

Crystal structure of Seabream Antiquitin and Elucidation of its substrate specificity


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.83 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.210 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The Crystal Structure of Seabream Antiquitin Reveals the Structural Basis of its Substrate Specificity.

Tang, W.K.Wong, K.B.Lam, Y.M.Cha, S.S.Cheng, C.H.K.Fong, W.P.

(2008) FEBS Lett. 582: 3090

  • DOI: 10.1016/j.febslet.2008.07.059

  • PubMed Abstract: 
  • The crystal structure of seabream antiquitin in complex with the cofactor NAD(+) was solved at 2.8A resolution. The mouth of the substrate-binding pocket is guarded by two conserved residues, Glu120 and Arg300. To test the role of these two residues, ...

    The crystal structure of seabream antiquitin in complex with the cofactor NAD(+) was solved at 2.8A resolution. The mouth of the substrate-binding pocket is guarded by two conserved residues, Glu120 and Arg300. To test the role of these two residues, we have prepared the two mutants E120A and R300A. Our model and kinetics data suggest that antiquitin's specificity towards the substrate alpha-aminoadipic semialdehyde is contributed mainly by Glu120 which interacts with the alpha-amino group of the substrate. On the other hand, Arg300 does not have any specific interaction with the alpha-carboxylate group of the substrate, but is important in maintaining the active site conformation.


    Organizational Affiliation

    Department of Biochemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ANTIQUITIN
A, B, C, D, E, F, G, H
510Acanthopagrus schlegeliiMutation(s): 0 
Find proteins for Q4KTQ7 (Acanthopagrus schlegelii)
Go to UniProtKB:  Q4KTQ7
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAD
Query on NAD

Download SDF File 
Download CCD File 
A, B, C, D, E, F, G, H
NICOTINAMIDE-ADENINE-DINUCLEOTIDE
C21 H27 N7 O14 P2
BAWFJGJZGIEFAR-NNYOXOHSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.83 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.210 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 88.160α = 90.50
b = 111.020β = 98.10
c = 113.640γ = 111.59
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-05-13
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance