7P4L

Crystal structure of the trimeric ectodomain of archaeal Fusexin1 (Fsx1)

• PDB DOI:  https://doi.org/10.2210/pdb7P4L/pdb

• Classification: MEMBRANE PROTEIN
• Organism(s): metagenome
• Expression System: Homo sapiens
• Mutation(s): No 


• Deposited: 2021-07-12 Released: 2022-07-13 
• Deposition Author(s): Nishio, S., Tunyasuvunakool, K., Jumper, J., De Sanctis, D., Jovine, L.
• Funding Organization(s): Swedish Research Council, Knut and Alice Wallenberg Foundation

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.243 
• R-Value Work: 0.199 
• R-Value Observed: 0.200 

Literature

Discovery of archaeal fusexins homologous to eukaryotic HAP2/GCS1 gamete fusion proteins

Moi, D., Nishio, S., Li, X., Valansi, C., Langleib, M., Brukman, N.G., Flyak, K., Dessimoz, C., de Sanctis, D., Tunyasuvunakool, K., Jumper, J., Grana, M., Romero, H., Aguilar, P.S., Jovine, L., Podbilewicz, B.

(2022) Nat Commun 13: 3880

• DOI: https://doi.org/10.1038/s41467-022-31564-1

Biological Assembly 1  

Global Symmetry: Cyclic - C3  (3D View)
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: homology

Macromolecule Content

• Total Structure Weight: 173.08 kDa 
• Atom Count: 11,733 
• Modelled Residue Count: 1,432 
• Deposited Residue Count: 1,572 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Fusexin1	A, B, C	524	metagenome	Mutation(s): 0
UniProt
Find proteins for C0HM55 (Uncultured archaeon) Explore C0HM55  Go to UniProtKB:  C0HM55

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	AA [auth B], AB [auth C], BA [auth B], BB [auth C], CA [auth B], CB [auth C], D [auth A], DA [auth B], DB [auth C], E [auth A], EA [auth B], EB [auth C], F [auth A], FA [auth B], FB [auth C], G [auth A], GA [auth B], GB [auth C], H [auth A], HA [auth B], I [auth A], IA [auth B], J [auth A], JA [auth B], K [auth A], KA [auth B], L [auth A], M [auth A], N [auth A], YA [auth C], ZA [auth C]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N
CL	KB [auth C], LB [auth C], MB [auth C], NB [auth C], OB [auth C], PB [auth C], QB [auth C], RA [auth B], SA [auth B], T [auth A], TA [auth B], U [auth A], UA [auth B], V [auth A], VA [auth B], W [auth A], WA [auth B], X [auth A], XA [auth B], Y [auth A], Z [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M
NA	HB [auth C], IB [auth C], JB [auth C], LA [auth B], MA [auth B], NA [auth B], O [auth A], OA [auth B], P [auth A], PA [auth B], Q [auth A], QA [auth B], R [auth A], S [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.243 
• R-Value Work: 0.199 
• R-Value Observed: 0.200 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 262.51	α = 90
b = 111.33	β = 100.709
c = 68.51	γ = 90

Software Package:

Software Name	Purpose
MxCuBE	data collection
XDS	data reduction
XSCALE	data scaling
Coot	model building
PHASER	phasing
PHENIX	refinement

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2022-07-13 
Deposition Author(s): Nishio, S., Tunyasuvunakool, K., Jumper, J., De Sanctis, D., Jovine, L.

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Funding Organization	Location	Grant Number
Swedish Research Council	Sweden	2016-03999
Swedish Research Council	Sweden	2020-04936
Knut and Alice Wallenberg Foundation	Sweden	2018.0042

Revision History  

• Version 1.0: 2022-07-13
  Type: Initial release