4RV8

Co-Crystal Structure of the Catalytic Domain of the Inosine Monophosphate Dehydrogenase from Cryptosporidium parvum and the inhibitor p131


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.189 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure of Cryptosporidium IMP dehydrogenase bound to an inhibitor with in vivo antiparasitic activity.

Kim, Y.Makowska-Grzyska, M.Gorla, S.K.Gollapalli, D.R.Cuny, G.D.Joachimiak, A.Hedstrom, L.

(2015) Acta Crystallogr F Struct Biol Commun 71: 531-538

  • DOI: 10.1107/S2053230X15000187
  • Primary Citation of Related Structures:  
    4RV8

  • PubMed Abstract: 
  • Inosine 5'-monophosphate dehydrogenase (IMPDH) is a promising target for the treatment of Cryptosporidium infections. Here, the structure of C. parvum IMPDH (CpIMPDH) in complex with inosine 5'-monophosphate (IMP) and P131, an inhibitor with in vivo ...

    Inosine 5'-monophosphate dehydrogenase (IMPDH) is a promising target for the treatment of Cryptosporidium infections. Here, the structure of C. parvum IMPDH (CpIMPDH) in complex with inosine 5'-monophosphate (IMP) and P131, an inhibitor with in vivo anticryptosporidial activity, is reported. P131 contains two aromatic groups, one of which interacts with the hypoxanthine ring of IMP, while the second interacts with the aromatic ring of a tyrosine in the adjacent subunit. In addition, the amine and NO2 moieties bind in hydrated cavities, forming water-mediated hydrogen bonds to the protein. The design of compounds to replace these water molecules is a new strategy for the further optimization of C. parvum inhibitors for both antiparasitic and antibacterial applications.


    Organizational Affiliation

    Department of Biology, Brandeis University, 415 South Street, Waltham, MA 02454, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Inosine-5'-monophosphate dehydrogenaseABCD361Cryptosporidium parvumMutation(s): 0 
Gene Names: 56k.02cgd6_20
EC: 1.1.1.205
Find proteins for Q8T6T2 (Cryptosporidium parvum)
Explore Q8T6T2 
Go to UniProtKB:  Q8T6T2
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
I13
Query on I13

Download CCD File 
A, B, C
1-(2-{3-[(1E)-N-(2-aminoethoxy)ethanimidoyl]phenyl}propan-2-yl)-3-(4-chloro-3-nitrophenyl)urea
C20 H24 Cl N5 O4
MAIRRISEQUGPIE-DHRITJCHSA-N
 Ligand Interaction
IMP
Query on IMP

Download CCD File 
A, B, C, D
INOSINIC ACID
C10 H13 N4 O8 P
GRSZFWQUAKGDAV-KQYNXXCUSA-N
 Ligand Interaction
PEG
Query on PEG

Download CCD File 
A, B
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A, B, C, D
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
OCS
Query on OCS
A,B,C,DL-PEPTIDE LINKINGC3 H7 N O5 SCYS
Experimental Data & Validation

Experimental Data

Unit Cell:
Length ( Å )Angle ( ˚ )
a = 89.188α = 90
b = 91.832β = 103.75
c = 92.021γ = 90
Software Package:
Software NamePurpose
SBC-Collectdata collection
HKL-3000data collection
HKL-3000phasing
MOLREPphasing
PHENIXrefinement
HKL-3000data reduction
HKL-3000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-12-31
    Type: Initial release
  • Version 1.1: 2015-12-16
    Changes: Database references
  • Version 1.2: 2017-02-08
    Changes: Structure summary
  • Version 1.3: 2017-07-26
    Changes: Refinement description, Source and taxonomy