1AM6

CARBONIC ANHYDRASE II INHIBITOR: ACETOHYDROXAMATE

• PDB DOI: https://doi.org/10.2210/pdb1AM6/pdb

• Classification: HYDROLASE
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 1997-06-24 Released: 1998-06-24 
• Deposition Author(s): Scolnick, L.R., Clements, A.M., Christianson, D.W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.220 
• R-Value Work: 0.160 
• R-Value Observed: 0.160 

Literature

Novel Binding Mode of Hydroxamate Inhibitors to Human Carbonic Anhydrase II

Scolnick, L.R., Clements, A.M., Liao, J., Crenshaw, L., Hellberg, M., May, J., Dean, T.R., Christianson, D.W.

(1997) J Am Chem Soc 119: 850-851

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 29.5 kDa 
• Atom Count: 2,177 
• Modelled Residue Count: 258 
• Deposited Residue Count: 259 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CARBONIC ANHYDRASE	A	259	Homo sapiens	Mutation(s): 0  EC: 4.2.1.1
UniProt & NIH Common Fund Data Resources
Find proteins for P00918 (Homo sapiens) Explore P00918  Go to UniProtKB:  P00918
PHAROS:  P00918 GTEx:  ENSG00000104267

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HG	B [auth A]	MERCURY (II) ION Hg BQPIGGFYSBELGY-UHFFFAOYSA-N
HAE	D [auth A]	ACETOHYDROXAMIC ACID C2 H5 N O2 RRUDCFGSUDOHDG-UHFFFAOYSA-N
ZN	C [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
HAE	Binding MOAD:  1AM6	IC50: 4.70e+4 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.220 
• R-Value Work: 0.160 
• R-Value Observed: 0.160 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.7	α = 90
b = 41.7	β = 92
c = 73	γ = 90

Software Package:

Software Name	Purpose
MOSFLM	data reduction
CCP4	data reduction
X-PLOR	model building
X-PLOR	refinement
CCP4	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1998-06-24 
Deposition Author(s): Scolnick, L.R., Clements, A.M., Christianson, D.W.

Revision History  

• Version 1.0: 1998-06-24
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-02-07
  Changes: Data collection, Database references, Derived calculations