4NV7

Crystal Structure of Mesorhizobium Loti Arylamine N-acetyltransferase 1 In Complex With CoA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.02 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 

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Ligand Structure Quality Assessment 


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Literature

Insight into cofactor recognition in arylamine N-acetyltransferase enzymes: structure of Mesorhizobium loti arylamine N-acetyltransferase in complex with coenzyme A.

Xu, X.Li de la Sierra-Gallay, I.Kubiak, X.Duval, R.Chaffotte, A.F.Dupret, J.M.Haouz, A.Rodrigues-Lima, F.

(2015) Acta Crystallogr D Biol Crystallogr 71: 266-273

  • DOI: 10.1107/S139900471402522X
  • Primary Citation of Related Structures:  
    4NV7, 4NV8

  • PubMed Abstract: 
  • Arylamine N-acetyltransferases (NATs) are xenobiotic metabolizing enzymes that catalyze the acetyl-CoA-dependent acetylation of arylamines. To better understand the mode of binding of the cofactor by this family of enzymes, the structure of Mesorhizobium loti NAT1 [(RHILO)NAT1] was determined in complex with CoA ...

    Arylamine N-acetyltransferases (NATs) are xenobiotic metabolizing enzymes that catalyze the acetyl-CoA-dependent acetylation of arylamines. To better understand the mode of binding of the cofactor by this family of enzymes, the structure of Mesorhizobium loti NAT1 [(RHILO)NAT1] was determined in complex with CoA. The F42W mutant of (RHILO)NAT1 was used as it is well expressed in Escherichia coli and displays enzymatic properties similar to those of the wild type. The apo and holo structures of (RHILO)NAT1 F42W were solved at 1.8 and 2 Å resolution, respectively. As observed in the Mycobacterium marinum NAT1-CoA complex, in (RHILO)NAT1 CoA binding induces slight structural rearrangements that are mostly confined to certain residues of its `P-loop'. Importantly, it was found that the mode of binding of CoA is highly similar to that of M. marinum NAT1 but different from the modes reported for Bacillus anthracis NAT1 and Homo sapiens NAT2. Therefore, in contrast to previous data, this study shows that different orthologous NATs can bind their cofactors in a similar way, suggesting that the mode of binding CoA in this family of enzymes is less diverse than previously thought. Moreover, it supports the notion that the presence of the `mammalian/eukaryotic insertion loop' in certain NAT enzymes impacts the mode of binding CoA by imposing structural constraints.


    Organizational Affiliation

    Université Paris Diderot, Sorbonne Paris Cité, Unité BFA, CNRS UMR 8251, 75013 Paris, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Arylamine N-acetyltransferaseA, B312Mesorhizobium japonicum MAFF 303099Mutation(s): 1 
Gene Names: mlr4870
EC: 2.3.1.5
UniProt
Find proteins for Q98D42 (Mesorhizobium japonicum (strain LMG 29417 / CECT 9101 / MAFF 303099))
Explore Q98D42 
Go to UniProtKB:  Q98D42
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ98D42
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
COA
Query on COA

Download Ideal Coordinates CCD File 
C [auth A],
D [auth B]
COENZYME A
C21 H36 N7 O16 P3 S
RGJOEKWQDUBAIZ-IBOSZNHHSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.02 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.5α = 90
b = 114.86β = 90
c = 115.61γ = 90
Software Package:
Software NamePurpose
PHASERphasing
REFMACrefinement
xia2data reduction
XDSdata reduction
xia2data scaling
XSCALEdata scaling

Structure Validation

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Ligand Structure Quality Assessment 



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-01-21
    Type: Initial release
  • Version 1.1: 2015-02-25
    Changes: Database references