2H5L

S-Adenosylhomocysteine hydrolase containing NAD and 3-deaza-D-eritadenine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.248 
  • R-Value Observed: 0.249 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure and function of eritadenine and its 3-deaza analogues: Potent inhibitors of S-adenosylhomocysteine hydrolase and hypocholesterolemic agents.

Yamada, T.Komoto, J.Lou, K.Ueki, A.Hua, D.H.Sugiyama, K.Takata, Y.Ogawa, H.Takusagawa, F.

(2007) Biochem Pharmacol 73: 981-989

  • DOI: 10.1016/j.bcp.2006.12.014
  • Primary Citation of Related Structures:  
    2H5L

  • PubMed Abstract: 
  • d-Eritadenine (DEA) is a potent inhibitor of S-adenosyl-l-homocysteine hydrolase (SAHH) and has hypocholesterolemic activity. We have hypothesized that 3-deaza-DEA (C3-DEA) and its analogues retain high level of SAHH inhibitory activity and have resistance to deamination and glycosidic bond hydrolysis in vivo ...

    d-Eritadenine (DEA) is a potent inhibitor of S-adenosyl-l-homocysteine hydrolase (SAHH) and has hypocholesterolemic activity. We have hypothesized that 3-deaza-DEA (C3-DEA) and its analogues retain high level of SAHH inhibitory activity and have resistance to deamination and glycosidic bond hydrolysis in vivo. Such C3-DEA analogues would have much higher hypocholesterolemic activity. C3-DEA, and its methyl ester (C3-OMeDEA) and its methyl amido (C3-NMeDEA) were synthesized to examine their SAHH inhibitory and hypocholesterolemic activities. A crystal structure of SAHH containing C3-DEA was determined and confirmed that DEA and C3-DEA bound to the same site of SAHH with the same binding mode. The SAHH inhibitory activities of C3-DEA (K(I)=1.5 microM) and C3-OMeDEA (K(I)=1.5 microM) are significantly lower than that of DEA (K(I)=30 nM), while rats fed by C3-DEA and C3-OMeDEA decrease the total plasma cholesterol and phospholipids by 36-40% and 23%, respectively, which is similar to the level of reductions (42% and 27%) by DEA. C3-NMeDEA lost most of the SAHH inhibitory activity (K(I)=30 microM) and dietary C3-NMeDEA does not decrease cholesterol and phospholipid in plasma but decreases the triacylglycerol level by 16%. DEA and C3-DEA analogues are neither substrates nor inhibitors of adenosine deaminase.


    Organizational Affiliation

    Department of Molecular Biosciences, University of Kansas, 1200 Sunnyside Avenue, Lawrence, KS 66045, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
AdenosylhomocysteinaseA, B, C, D, E, F, G, H431Rattus norvegicusMutation(s): 0 
Gene Names: Ahcy
EC: 3.3.1.1
UniProt
Find proteins for P10760 (Rattus norvegicus)
Explore P10760 
Go to UniProtKB:  P10760
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAD
Query on NAD

Download Ideal Coordinates CCD File 
I [auth A], K [auth B], M [auth C], O [auth D], Q [auth E], S [auth F], U [auth G], W [auth H]NICOTINAMIDE-ADENINE-DINUCLEOTIDE
C21 H27 N7 O14 P2
BAWFJGJZGIEFAR-NNYOXOHSSA-N
 Ligand Interaction
3DD
Query on 3DD

Download Ideal Coordinates CCD File 
J [auth A], L [auth B], N [auth C], P [auth D], R [auth E], T [auth F], V [auth G], X [auth H](2R,3R)-4-(4-AMINO-1H-IMIDAZO[4,5-C]PYRIDIN-1-YL)-2,3-DIHYDROXYBUTANOIC ACID
C10 H12 N4 O4
PBWCZGPIALILAS-HTRCEHHLSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.248 
  • R-Value Observed: 0.249 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 90.5α = 90
b = 178.6β = 107.9
c = 112.66γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
X-PLORmodel building
X-PLORrefinement
SCALEPACKdata scaling
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-04-10
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-18
    Changes: Refinement description