7XQT

The structure of FLA-K*00701/KP-FECV-11

• PDB DOI: https://doi.org/10.2210/pdb7XQT/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Felis catus, Feline coronavirus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2022-05-08 Released: 2023-11-08 
• Deposition Author(s): Qiao, P.W., Yue, C., Peng, W.Y., Liu, K.F., Huo, S.T., Zhang, D., Chai, Y., Qi, J.X., Sun, Z.Y., Gao, G.F., Liu, W.J., Wu, G.Z.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.293 
• R-Value Work: 0.225 
• R-Value Observed: 0.229 

Literature

Analysis of the characteristics of feline major histocompatibility complex class I molecules cross-presenting coronavirus peptides

Qiao, P.W., Yue, C., Peng, W.Y., Liu, K.F., Huo, S.T., Zhang, D., Chai, Y., Qi, J.X., Sun, Z.Y., Gao, G.F., Liu, W.J., Wu, G.Z.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1B1C1 

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

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 44.14 kDa 
• Atom Count: 3,128 
• Modelled Residue Count: 382 
• Deposited Residue Count: 382 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
MHC class I antigen alpha chain	A	274	Felis catus	Mutation(s): 0  Gene Names: FLA-I
UniProt
Find proteins for C6ZK69 (Felis catus) Explore C6ZK69  Go to UniProtKB:  C6ZK69

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Beta-2-microglobulin	B	99	Felis catus	Mutation(s): 0  Gene Names: B2M
UniProt
Find proteins for Q5MGS7 (Felis catus) Explore Q5MGS7  Go to UniProtKB:  Q5MGS7

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
peptide from Spike glycoprotein	C	9	Feline coronavirus	Mutation(s): 0
UniProt
Find proteins for A0A8F2VW53 (Feline coronavirus) Explore A0A8F2VW53  Go to UniProtKB:  A0A8F2VW53

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.293 
• R-Value Work: 0.225 
• R-Value Observed: 0.229 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 53.503	α = 90
b = 70.758	β = 90
c = 119.15	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
autoPROC	data processing
Coot	model building

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-11-08 
Deposition Author(s): Qiao, P.W., Yue, C., Peng, W.Y., Liu, K.F., Huo, S.T., Zhang, D., Chai, Y., Qi, J.X., Sun, Z.Y., Gao, G.F., Liu, W.J., Wu, G.Z.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	--

Revision History  

• Version 1.0: 2023-11-08
  Type: Initial release