Crystal structure of a His-tagged Serine Hydrolase Involved in the Carbazole Degradation (CarC enzyme)

Experimental Data Snapshot

  • Resolution: 1.86 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.215 
  • R-Value Observed: 0.215 

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Crystal structure of a histidine-tagged serine hydrolase involved in the carbazole degradation (CarC enzyme).

Habe, H.Morii, K.Fushinobu, S.Nam, J.W.Ayabe, Y.Yoshida, T.Wakagi, T.Yamane, H.Nojiri, H.Omori, T.

(2003) Biochem Biophys Res Commun 303: 631-639

  • DOI: https://doi.org/10.1016/s0006-291x(03)00375-9
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    2-Hydroxy-6-oxo-6-(2(')-aminophenyl)-hexa-2,4-dienoate hydrolases (CarC enzymes) from two carbazole-degrading bacteria were purified using recombinant Escherichia coli strains with the histidine (His)-tagged purification system. The His-tagged CarC (ht-CarC) enzymes from Pseudomonas resinovorans strain CA10 (ht-CarC(CA10)) and Janthinobacterium sp. strain J3 (ht-CarC(J3)) exhibited hydrolase activity toward 2-hydroxy-6-oxo-6-phenylhexa-2,4-dienoate as the purified native CarC(CA10) did. ht-CarC(J3) was crystallized in the space group I422 with cell dimensions of a=b=130.3A, c=84.5A in the hexagonal setting, and the crystal structure of ht-CarC(J3) was determined at 1.86A resolution. The final refined model of ht-CarC(J3) yields an R-factor of 21.6%, although the electron-density corresponding to Ile146 to Asn155 was ambiguous in the final model. We compared the known structures of BphD from Rhodococcus sp. strain RHA1 and CumD from Pseudomonas fluorescens strain IP01. The backbone conformation of ht-CarC(J3) was better superimposed with CumD than with BphD(RHA1). The side-chain directions of Arg185 and Trp262 residues in the substrate binding pockets of these enzymes were different among these proteins, suggesting that these residues may take a conformational change during the catalytic cycles.

  • Organizational Affiliation

    Biotechnology Research Center, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
meta cleavage compound hydrolase296JanthinobacteriumMutation(s): 0 
Gene Names: CarC
Find proteins for Q84II3 (Janthinobacterium sp. (strain J3))
Explore Q84II3 
Go to UniProtKB:  Q84II3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ84II3
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.86 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.215 
  • R-Value Observed: 0.215 
  • Space Group: I 4 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 130.268α = 90
b = 130.268β = 90
c = 84.491γ = 90
Software Package:
Software NamePurpose
CrystalCleardata collection
CrystalCleardata reduction
CrystalCleardata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-06-17
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-10-25
    Changes: Data collection, Database references, Refinement description