5JWW

T4 Lysozyme L99A/M102Q with 1-Hydro-2-ethyl-1,2-azaborine Bound


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.47 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.214 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Hydrogen Bonding of 1,2-Azaborines in the Binding Cavity of T4 Lysozyme Mutants: Structures and Thermodynamics.

Lee, H.Fischer, M.Shoichet, B.K.Liu, S.Y.

(2016) J.Am.Chem.Soc. 138: 12021-12024

  • DOI: 10.1021/jacs.6b06566
  • Primary Citation of Related Structures:  5JWS, 5JWT, 5JWU, 5JWV

  • PubMed Abstract: 
  • Protein crystallography and calorimetry were used to characterize the binding of 1,2-azaborines to model cavities in T4 lysozyme in direct comparison to their carbonaceous counterparts. In the apolar L99A cavity, affinity for Ab dropped only slightly ...

    Protein crystallography and calorimetry were used to characterize the binding of 1,2-azaborines to model cavities in T4 lysozyme in direct comparison to their carbonaceous counterparts. In the apolar L99A cavity, affinity for Ab dropped only slightly versus benzene. In the cavity designed to accommodate a single hydrogen bond (L99A/M102Q), Gln102═O···H-N hydrogen bonding for Ab and BEtAb was observed in the crystallographic complexes. The strength of the hydrogen bonding was estimated as 0.94 and 0.64 kcal/mol for Ab and BEtAb, respectively. This work unambiguously demonstrates that 1,2-azaborines can be readily accommodated in classic aryl recognition pockets and establishes one of 1,2-azaborine's distinguishing features from its carbonaceous isostere benzene: its ability to serve as an NH hydrogen bond donor in a biological setting.


    Organizational Affiliation

    Department of Chemistry, Boston College , Chestnut Hill, Massachusetts 02467, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Endolysin
A
164Enterobacteria phage T4Gene Names: E
EC: 3.2.1.17
Find proteins for P00720 (Enterobacteria phage T4)
Go to UniProtKB:  P00720
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
6OQ
Query on 6OQ

Download SDF File 
Download CCD File 
A
2-ethyl-1,2-dihydro-1,2-azaborinine
C6 H10 B N
LWNVLMFFYVOFEQ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.47 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.214 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 60.163α = 90.00
b = 60.163β = 90.00
c = 97.087γ = 120.00
Software Package:
Software NamePurpose
d*TREKdata scaling
PHENIXmodel building
PHENIXrefinement
d*TREKdata reduction
PDB_EXTRACTdata extraction
PHENIXphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationCountryGrant Number
National Institutes of HealthUnited States5001989

Revision History 

  • Version 1.0: 2016-09-21
    Type: Initial release
  • Version 1.1: 2016-09-28
    Type: Database references