5ZFJ

Crystal structure of a cyclase Filc from Fischerella sp. in complex with 4-(1H-Indol-3-yl)butan-2-one


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.86 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.171 

Starting Model: experimental
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This is version 1.2 of the entry. See complete history


Literature

The Crystal Structure of a Class of Cyclases that Catalyze the Cope Rearrangement

Chen, C.C.Hu, X.Tang, X.Yang, Y.Ko, T.P.Gao, J.Zheng, Y.Huang, J.W.Yu, Z.Li, L.Han, S.Cai, N.Zhang, Y.Liu, W.Guo, R.T.

(2018) Angew Chem Int Ed Engl 57: 15060-15064

  • DOI: https://doi.org/10.1002/anie.201808231
  • Primary Citation of Related Structures:  
    5YVK, 5YVL, 5YVP, 5Z53, 5Z54, 5ZFJ, 6A8X, 6A92, 6A98, 6A99, 6A9F, 6ADU

  • PubMed Abstract: 

    Found recently in stignomatales, the Stig cyclases catalyze the Cope rearrangement and intramolecular cyclization to produce complex indole alkaloids. Five crystal structures were solved of subfamily 1 and 2 Stig cyclases, which adopt a β-sandwich fold like the non-catalytic carbohydrate-binding motif. Several complex structures were also determined of indole-based compounds, which are bound to the hydrophobic terminal cavity, where a conserved Asp residue makes an H-bond to the indole N and triggers the acid-catalyzed Cope rearrangement. Through analyzing the enzyme-ligand interactions and mutagenesis experiments, several aromatic residues were found important in catalysis. Apart from a common substrate binding mode and catalytic mechanism, potential subfamily variations that may attribute to the different product specificity are implicated. These results shall expand our scope of enzymology, in particular for further investigation of the biosynthetic Cope rearrangement.


  • Organizational Affiliation

    State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-resources, Environmental Microbial Technology Center of Hubei Province, Hubei Key Laboratory of Industrial Biotechnology, College of Life Sciences, Hubei University, Wuhan, 430062, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
acyclase
A, B, C, D
227Mastigocladus laminosus UTEX LB 1931Mutation(s): 0 
Gene Names: filC1
UniProt
Find proteins for A0A1P8VSI6 (Fischerella sp. TAU)
Explore A0A1P8VSI6 
Go to UniProtKB:  A0A1P8VSI6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A1P8VSI6
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
9BF
Query on 9BF

Download Ideal Coordinates CCD File 
H [auth A],
L [auth B],
P [auth C],
T [auth D]
4-(1~{H}-indol-3-yl)butan-2-one
C12 H13 N O
ZJCUUXGLZWBCIL-UHFFFAOYSA-N
TRS
Query on TRS

Download Ideal Coordinates CCD File 
G [auth A],
S [auth D]
2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
C4 H12 N O3
LENZDBCJOHFCAS-UHFFFAOYSA-O
PEG
Query on PEG

Download Ideal Coordinates CCD File 
M [auth B]DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
GOL
Query on GOL

Download Ideal Coordinates CCD File 
I [auth A]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
CA
Query on CA

Download Ideal Coordinates CCD File 
E [auth A]
F [auth A]
J [auth B]
K [auth B]
N [auth C]
E [auth A],
F [auth A],
J [auth B],
K [auth B],
N [auth C],
O [auth C],
Q [auth D],
R [auth D]
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.86 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.171 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 88.203α = 90
b = 255.055β = 90
c = 36.183γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-12-19
    Type: Initial release
  • Version 1.1: 2018-12-26
    Changes: Data collection, Structure summary
  • Version 1.2: 2023-11-22
    Changes: Data collection, Database references, Derived calculations, Refinement description