7SQM

Discovery and Preclinical Pharmacology of INE963, A Potent and Fast-Acting Blood-Stage Antimalarial with a High Barrier to Resistance and Potential for Single-Dose Cure in Uncomplicated Malaria

• PDB DOI: https://doi.org/10.2210/pdb7SQM/pdb

• Classification: ANTIVIRAL PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli 'BL21-Gold(DE3)pLysS AG
• Mutation(s): No 


• Deposited: 2021-11-05 Released: 2021-12-29 
• Deposition Author(s): Shu, W., Yokokawa, F.
• Funding Organization(s): Not funded

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.78 Å
• R-Value Free: 0.205 
• R-Value Work: 0.173 
• R-Value Observed: 0.175 

Starting Model: experimental

Literature

Failure of artesunate-mefloquine combination therapy for uncompli-cated Plasmodium falciparum malaria in southern Cambodia.

Rogers, W.O., Wongsrichanalai, C.

(2009) Malar J 2009, 8, 10: 8-10

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 40.92 kDa 
• Atom Count: 3,206 
• Modelled Residue Count: 346 
• Deposited Residue Count: 357 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Serine/threonine-protein kinase haspin	A	357	Homo sapiens	Mutation(s): 0  Gene Names: HASPIN, GSG2 EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for Q8TF76 (Homo sapiens) Explore Q8TF76  Go to UniProtKB:  Q8TF76
PHAROS:  Q8TF76 GTEx:  ENSG00000177602

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
A5G (Subject of Investigation/LOI)	B [auth A]	1-[(4S)-5-(2,4-difluorophenyl)imidazo[2,1-b][1,3,4]thiadiazol-2-yl]-4-methylpiperidin-4-amine C16 H17 F2 N5 S ZGROGDMIGGHZAV-UHFFFAOYSA-N
GOL	C [auth A], D [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.78 Å
• R-Value Free: 0.205 
• R-Value Work: 0.173 
• R-Value Observed: 0.175 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 73.026	α = 90
b = 77.045	β = 90
c = 86.308	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
PHENIX	refinement
XDS	data reduction
Aimless	data scaling
AMoRE	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2021-12-29 
Deposition Author(s): Shu, W., Yokokawa, F.

---

Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2021-12-29
  Type: Initial release
  
• Version 1.1: 2023-10-18
  Changes: Data collection, Refinement description