9B2Q | pdb_00009b2q

Crystal Structure of Pantothenate Synthetase from Candida albicans.

• PDB DOI: https://doi.org/10.2210/pdb9B2Q/pdb

• Classification: LIGASE
• Organism(s): Candida albicans
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2024-03-15 Released: 2025-03-26 
• Deposition Author(s): Regan, J., Avad, K.A., Alaidi, O., Seetharaman, J., Palmer, G.E., Hevener, K.E.
• Funding Organization(s): Not funded

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 
  0.218 (Depositor), 0.218 (DCC) 
• R-Value Work: 
  0.188 (Depositor), 0.187 (DCC) 
• R-Value Observed: 
  0.189 (Depositor) 

Starting Model: experimental

Literature

Small molecule inhibitors of fungal pantothenate synthetase can provide a valid and potentially efficacious strategy for antifungal development.

Regan, J., Reitler, P., Tucker, K.M., Avad, K.A., Peters, T., Hevener, K.E., Palmer, G.E.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

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

Biological Assembly Evidence: gel filtration, homology

Macromolecule Content 

• Total Structure Weight: 37.41 kDa 
• Atom Count: 2,734 
• Modeled Residue Count: 306 
• Deposited Residue Count: 328 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Pantoate--beta-alanine ligase	A	328	Candida albicans	Mutation(s): 0  Gene Names: PAN6, CAALFM_CR02580WA, orf19.7797 EC: 6.3.2.1
UniProt
Find proteins for A0A1D8PS97 (Candida albicans (strain SC5314 / ATCC MYA-2876)) Explore A0A1D8PS97  Go to UniProtKB:  A0A1D8PS97

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EPE	C [auth A]	4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID C8 H18 N2 O4 S JKMHFZQWWAIEOD-UHFFFAOYSA-N
MPD	D [auth A]	(4S)-2-METHYL-2,4-PENTANEDIOL C6 H14 O2 SVTBMSDMJJWYQN-YFKPBYRVSA-N
PEG	B [auth A]	DI(HYDROXYETHYL)ETHER C4 H10 O3 MTHSVFCYNBDYFN-UHFFFAOYSA-N
SO4	E [auth A], F [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free:  0.218 (Depositor), 0.218 (DCC) 
• R-Value Work:  0.188 (Depositor), 0.187 (DCC) 
• R-Value Observed: 0.189 (Depositor) 

Space Group: I 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 63.746	α = 90
b = 95.653	β = 90
c = 124.497	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
xia2	data reduction
xia2	data scaling
REFMAC	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-03-26 
Deposition Author(s): Regan, J., Avad, K.A., Alaidi, O., Seetharaman, J., Palmer, G.E., Hevener, K.E.

---

Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2025-03-26
  Type: Initial release