4K1L

4,4-Dioxo-5,6-dihydro-[1,4,3]oxathiazines, a novel class of 11 beta-HSD1 inhibitors for the treatment of diabetes

• PDB DOI: https://doi.org/10.2210/pdb4K1L/pdb

• Classification: OXIDOREDUCTASE/OXIDOREDUCTASE INHIBITOR
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2013-04-05 Released: 2014-04-09 
• Deposition Author(s): Loenze, P., Schimanski-Breves, S., Von der Heyden, C., Engel, C.K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.96 Å
• R-Value Free: 0.202 
• R-Value Work: 0.167 
• R-Value Observed: 0.169 

Starting Model: experimental

Literature

1,1-Dioxo-5,6-dihydro-[4,1,2]oxathiazines, a novel class of 11-HSD1 inhibitors for the treatment of diabetes.

Bohme, T., Engel, C.K., Farjot, G., Gussregen, S., Haack, T., Tschank, G., Ritter, K.

(2013) Bioorg Med Chem Lett 23: 4685-4691

• PubMed: 23845218 
• DOI: https://doi.org/10.1016/j.bmcl.2013.05.102
• Primary Citation of Related Structures:  
  4K1L, 4K26


• PubMed Abstract: 
  

  Racemic cis-1,1-dioxo-5,6-dihydro-[4,1,2]oxathiazine derivative 4a was isolated as an impurity in a sample of a hit from a HTS campaign on 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1). After separation by chiral chromatography the 4a-S, 8a-R enantiomer of compound 4a was identified as the true, potent enzyme inhibitor. The cocrystal structure of 4a with human and murine 11ß-HSD1 revealed the unique binding mode of the oxathiazine series. SAR elucidation and optimization in regard to metabolic stability led to monocyclic tetramethyloxathiazines as exemplified by compound 21g.

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Organizational Affiliation: 

Sanofi Deutschland GmbH, R&D, Industriepark Höchst, 65926 Frankfurt am Main, Germany.

Biological Assembly 1  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

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

Macromolecule Content

• Total Structure Weight: 131.47 kDa 
• Atom Count: 9,120 
• Modelled Residue Count: 1,056 
• Deposited Residue Count: 1,144 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Corticosteroid 11-beta-dehydrogenase isozyme 1	A, B, C, D	286	Homo sapiens	Mutation(s): 1  Gene Names: HSD11B1, HSD11, HSD11L EC: 1.1.1.146 (PDB Primary Data), 1.1.1.201 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P28845 (Homo sapiens) Explore P28845  Go to UniProtKB:  P28845
PHAROS:  P28845 GTEx:  ENSG00000117594

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NDP	F [auth A], H [auth B], J [auth C], L [auth D]	NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE C21 H30 N7 O17 P3 ACFIXJIJDZMPPO-NNYOXOHSSA-N
SFF	E [auth A], G [auth B], I [auth C], K [auth D]	(4aS,8aR)-N-cyclohexyl-4a,5,6,7,8,8a-hexahydro-4,1,2-benzoxathiazin-3-amine 1,1-dioxide C13 H22 N2 O3 S ZMDVQNCMHSXAPA-NWDGAFQWSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.96 Å
• R-Value Free: 0.202 
• R-Value Work: 0.167 
• R-Value Observed: 0.169 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 57.361	α = 90
b = 150.941	β = 93.79
c = 74.169	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-04-09 
Deposition Author(s): Loenze, P., Schimanski-Breves, S., Von der Heyden, C., Engel, C.K.

Revision History  

• Version 1.0: 2014-04-09
  Type: Initial release
  
• Version 1.1: 2023-09-20
  Changes: Data collection, Database references, Derived calculations, Refinement description