5T74

Human carboanhydrase F131C_C206S double mutant in complex with 14

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.2 Å
  • R-Value Free: 0.169 
  • R-Value Work: 0.149 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history. 

Literature

A Predictive Approach for the Optical Control of Carbonic Anhydrase II Activity.

DuBay, K.H., Iwan, K., Osorio-Planes, L., Geissler, P.L., Groll, M., Trauner, D., Broichhagen, J.

(2018) ACS Chem. Biol. 13: 793-800

  • DOI: 10.1021/acschembio.7b00862
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    • Optogenetics and photopharmacology are powerful approaches to investigating biochemical systems. While the former is based on genetically encoded photoreceptors that utilize abundant chromophores, the latter relies on synthetic photoswitches that are ...

    Optogenetics and photopharmacology are powerful approaches to investigating biochemical systems. While the former is based on genetically encoded photoreceptors that utilize abundant chromophores, the latter relies on synthetic photoswitches that are either freely diffusible or covalently attached to specific bioconjugation sites, which are often native or engineered cysteines. The identification of suitable cysteine sites and appropriate linkers for attachment is in general a lengthy and cumbersome process. Herein, we describe an in silico screening approach designed to propose a small number of optimal combinations. By applying this computational approach to human carbonic anhydrase and a set of three photochromic tethered ligands, the number of potential site-ligand combinations was narrowed from over 750 down to 6, which we then evaluated experimentally. Two of these six combinations resulted in light-responsive human Carbonic Anhydrases (LihCAs), which were characterized with enzymatic activity assays, mass spectrometry, and X-ray crystallography. Our study also provides insights into the reactivity of cysteines toward maleimides and the hydrolytic stability of the adducts obtained.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Carbonic anhydrase 2
A
260Homo sapiensMutation(s): 2 
Gene Names: CA2
EC: 4.2.1.1
Find proteins for P00918 (Homo sapiens)
Go to Gene View: CA2
Go to UniProtKB:  P00918
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN
Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
75Y
Query on 75Y
Download SDF File 
Download CCD File 
A
2-[2,5-bis(oxidanylidene)pyrrol-1-yl]-~{N}-(4-sulfamoylphenyl)ethanamide
C12 H11 N3 O5 S
UXHVNEWXEIRLPY-UHFFFAOYSA-N
 Ligand Interaction
TRS
Query on TRS
Download SDF File 
Download CCD File 
A
2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
TRIS BUFFER
C4 H12 N O3
LENZDBCJOHFCAS-UHFFFAOYSA-O
 Ligand Interaction
HGB
Query on HGB
Download SDF File 
Download CCD File 
A
4-(HYDROXYMERCURY)BENZOIC ACID
C7 H6 Hg O3
WMHRYLDWLOGHSG-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.2 Å
  • R-Value Free: 0.169 
  • R-Value Work: 0.149 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 42.380α = 90.00
b = 41.380β = 104.09
c = 72.020γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
REFMACphasing
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
German Research FoundationGermanySFB749

Revision History 

  • Version 1.0: 2017-09-06
    Type: Initial release
  • Version 1.1: 2018-02-21
    Type: Database references
  • Version 1.2: 2018-03-28
    Type: Database references