5AOA

The structure of a novel thermophilic esterase from the Planctomycetes species, Thermogutta terrifontis, Est2-Propionate bound


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.71 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The Structure of a Novel Thermophilic Esterase from the Planctomycetes Species, Thermogutta Terrifontis Reveals an Open Active Site due to a Minimal 'CAP' Domain.

Sayer, C.Szabo, Z.Isupov, M.N.Ingham, C.Littlechild, J.A.

(2015) Front Microbiol 6: 1294

  • DOI: 10.3389/fmicb.2015.01294
  • Primary Citation of Related Structures:  
    5AO9, 5AOA, 5AOB, 5AOC

  • PubMed Abstract: 
  • A carboxyl esterase (TtEst2) has been identified in a novel thermophilic bacterium, Thermogutta terrifontis from the phylum Planctomycetes and has been cloned and over-expressed in Escherichia coli. The enzyme has been characterized biochemically and shown to have activity toward small p-nitrophenyl (pNP) carboxylic esters with optimal activity for pNP-acetate ...

    A carboxyl esterase (TtEst2) has been identified in a novel thermophilic bacterium, Thermogutta terrifontis from the phylum Planctomycetes and has been cloned and over-expressed in Escherichia coli. The enzyme has been characterized biochemically and shown to have activity toward small p-nitrophenyl (pNP) carboxylic esters with optimal activity for pNP-acetate. The enzyme shows moderate thermostability retaining 75% activity after incubation for 30 min at 70°C. The crystal structures have been determined for the native TtEst2 and its complexes with the carboxylic acid products propionate, butyrate, and valerate. TtEst2 differs from most enzymes of the α/β-hydrolase family 3 as it lacks the majority of the 'cap' domain and its active site cavity is exposed to the solvent. The bound ligands have allowed the identification of the carboxyl pocket in the enzyme active site. Comparison of TtEst2 with structurally related enzymes has given insight into how differences in their substrate preference can be rationalized based upon the properties of their active site pockets.


    Organizational Affiliation

    The Henry Wellcome Building for Biocatalysis, Biosciences, College of Life and Environmental Sciences, University of Exeter Exeter, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ESTERASEA286Thermogutta terrifontisMutation(s): 0 
EC: 3.1.1.1
UniProt
Find proteins for A0A0X1KHD1 (Thermogutta terrifontis)
Explore A0A0X1KHD1 
Go to UniProtKB:  A0A0X1KHD1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A0X1KHD1
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PG4
Query on PG4

Download Ideal Coordinates CCD File 
B [auth A],
C [auth A]
TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
 Ligand Interaction
PEG
Query on PEG

Download Ideal Coordinates CCD File 
E [auth A],
F [auth A],
G [auth A],
H [auth A]
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
PPI
Query on PPI

Download Ideal Coordinates CCD File 
D [auth A]PROPANOIC ACID
C3 H6 O2
XBDQKXXYIPTUBI-UHFFFAOYSA-N
 Ligand Interaction
EDO
Query on EDO

Download Ideal Coordinates CCD File 
I [auth A],
J [auth A],
K [auth A],
L [auth A],
M [auth A]
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

Download Ideal Coordinates CCD File 
N [auth A]CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.71 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 61.957α = 90
b = 70.909β = 90
c = 75.861γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
Aimlessdata reduction
MOLREPphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-12-09
    Type: Initial release
  • Version 1.1: 2015-12-16
    Changes: Database references
  • Version 1.2: 2017-05-03
    Changes: Database references