Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Standalone Viewers  
Protein Workshop | Ligand Explorer

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 30064.53 
• Atom Count: 2084 
• Residue Count: 260 
• Unique protein chains: 1

5T74

Human carboanhydrase F131C_C206S double mutant in complex with 14

• DOI: 10.2210/pdb5T74/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): 2 


• Deposited: 2016-09-02 Released: 2017-09-06 
• Deposition Author(s): DuBay, K.H., Iwan, K., Osorio-Planes, L., Geissler, P., Groll, M., Trauner, D., Broichhagen, J.
• Funding Organization(s): German Research Foundation 

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Experimental Data Snapshot

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

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

• PubMed: 29357237 
• DOI: 10.1021/acschembio.7b00862
• Primary Citation of Related Structures:  
  5T75, 5T71, 5T72


• 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 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 generally a lengthy and cumbersome process. Herein, we describe an in silico screening approach that is 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.

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Organizational Affiliation: 

Department of Chemistry, University of California at Berkeley , Berkeley, California 94720, United States.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Carbonic anhydrase 2	A	260	Homo sapiens	Mutation(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
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
ZN	A	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
75Y	A	2-[2,5-bis(oxidanylidene)pyrrol-1-yl]-~{N}-(4-sulfamoylphenyl)ethanamide C12 H11 N3 O5 S UXHVNEWXEIRLPY-UHFFFAOYSA-N
TRS	A	2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL TRIS BUFFER C4 H12 N O3 LENZDBCJOHFCAS-UHFFFAOYSA-O
HGB	A	4-(HYDROXYMERCURY)BENZOIC ACID C7 H6 Hg O3 WMHRYLDWLOGHSG-UHFFFAOYSA-M

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 = 42.380	α = 90.00
b = 41.380	β = 104.09
c = 72.020	γ = 90.00

Software Package:

Software Name	Purpose
REFMAC	refinement
REFMAC	phasing
XDS	data reduction
XSCALE	data scaling

Structure Validation

Entry History & Funding Information

Deposition Data

• Deposited Date: 2016-09-02 
• Released Date: 2017-09-06 
• Deposition Author(s): DuBay, K.H., Iwan, K., Osorio-Planes, L., Geissler, P., Groll, M., Trauner, D., Broichhagen, J.

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Funding Organization	Location	Grant Number
German Research Foundation	Germany	SFB749

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