5Z54

Crystal structure of a cyclase Hpiu5 from Fischerella sp. ATCC 43239 in complex with cyclo-L-Arg-D-Pro


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.16 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.184 

wwPDB Validation 3D Report Full Report


This is version 1.1 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: 10.1002/anie.201808231
  • Primary Citation of Related Structures:  
    5Z53, 5Z54, 5YVK, 5YVL, 5YVP, 5ZFJ, 6ADU, 6A9F, 6A8X, 6A99

  • 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 fo ...

    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

    Industrial Enzymes National Engineering Laboratory, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
12-epi-hapalindole C/U synthaseABCD227Fischerella ambigua UTEX 1903Mutation(s): 0 
Gene Names: hpiU5
Find proteins for A0A076NBW8 (Fischerella sp. ATCC 43239)
Explore A0A076NBW8 
Go to UniProtKB:  A0A076NBW8
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
0HZ
Query on 0HZ

Download CCD File 
A, B, C, D
amino({3-[(3S,8aS)-1,4-dioxooctahydropyrrolo[1,2-a]pyrazin-3-yl]propyl}amino)methaniminium
C11 H20 N5 O2
ZRJHYOXNWCMGMW-JGVFFNPUSA-O
 Ligand Interaction
CA
Query on CA

Download CCD File 
A, B, C, D
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.16 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.184 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.557α = 90
b = 113.374β = 90
c = 132.332γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data scaling
PDB_EXTRACTdata extraction
HKL-2000data reduction
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2018-12-19
    Type: Initial release
  • Version 1.1: 2018-12-26
    Changes: Data collection, Structure summary