3DZK

Crystal structure of human CD38 extracellular domain, NMN complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.81 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.174 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Covalent and Noncovalent Intermediates of an NAD Utilizing Enzyme, Human CD38.

Liu, Q.Kriksunov, I.A.Jiang, H.Graeff, R.Lin, H.Lee, H.C.Hao, Q.

(2008) Chem.Biol. 15: 1068-1078

  • DOI: 10.1016/j.chembiol.2008.08.007
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Enzymatic utilization of nicotinamide adenine dinucleotide (NAD) has increasingly been shown to have fundamental roles in gene regulation, signal transduction, and protein modification. Many of the processes require the cleavage of the nicotinamide m ...

    Enzymatic utilization of nicotinamide adenine dinucleotide (NAD) has increasingly been shown to have fundamental roles in gene regulation, signal transduction, and protein modification. Many of the processes require the cleavage of the nicotinamide moiety from the substrate and the formation of a reactive intermediate. Using X-ray crystallography, we show that human CD38, an NAD-utilizing enzyme, is capable of catalyzing the cleavage reactions through both covalent and noncovalent intermediates, depending on the substrate used. The covalent intermediate is resistant to further attack by nucleophiles, resulting in mechanism-based enzyme inactivation. The noncovalent intermediate is stabilized mainly through H-bond interactions, but appears to remain reactive. Our structural results favor the proposal of a noncovalent intermediate during normal enzymatic utilization of NAD by human CD38 and provide structural insights into the design of covalent and noncovalent inhibitors targeting NAD-utilization pathways.


    Organizational Affiliation

    MacCHESS, Cornell High Energy Synchrotron Source, Department of Chemistry and Chemical Biology, School of Applied & Engineering Physics, Cornell University, Ithaca, NY 14853, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ADP-ribosyl cyclase 1
A, B
262Homo sapiensMutation(s): 5 
Gene Names: CD38
EC: 3.2.2.6
Find proteins for P28907 (Homo sapiens)
Go to Gene View: CD38
Go to UniProtKB:  P28907
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NMN
Query on NMN

Download SDF File 
Download CCD File 
A, B
BETA-NICOTINAMIDE RIBOSE MONOPHOSPHATE
NICOTINAMIDE MONONUCLEOTIDE
C11 H16 N2 O8 P
DAYLJWODMCOQEW-TURQNECASA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.81 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.174 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 41.889α = 106.20
b = 53.205β = 91.84
c = 65.598γ = 95.05
Software Package:
Software NamePurpose
MOLREPphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-11-04
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance