1OW0

Crystal structure of human FcaRI bound to IgA1-Fc

• PDB DOI: https://doi.org/10.2210/pdb1OW0/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Homo sapiens
• Expression System: Cricetulus griseus, Trichoplusia ni
• Mutation(s): Yes 


• Deposited: 2003-03-27 Released: 2003-05-27 
• Deposition Author(s): Herr, A.B., Ballister, E.R., Bjorkman, P.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.10 Å
• R-Value Free: 0.284 
• R-Value Work: 0.252 
• R-Value Observed: 0.252 

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 2  

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Biological Assembly 3  

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

Biological assembly 3 assigned by authors and generated by PISA (software)

Biological Assembly 4  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 4-mer - A2B2 

Biological assembly 4 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 102.37 kDa 
• Atom Count: 6,280 
• Modelled Residue Count: 798 
• Deposited Residue Count: 842 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Ig alpha-1 chain C region	A, B	214	Homo sapiens	Mutation(s): 1  Gene Names: IGHA1
UniProt & NIH Common Fund Data Resources
Find proteins for P01876 (Homo sapiens) Explore P01876  Go to UniProtKB:  P01876
PHAROS:  P01876 GTEx:  ENSG00000211895

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Immunoglobulin alpha Fc receptor	C, D	207	Homo sapiens	Mutation(s): 0  Gene Names: FCAR OR CD89
UniProt & NIH Common Fund Data Resources
Find proteins for P24071 (Homo sapiens) Explore P24071  Go to UniProtKB:  P24071
PHAROS:  P24071 GTEx:  ENSG00000186431

Oligosaccharides

Help

Entity ID: 3
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
N-acetyl-alpha-neuraminic acid-(2-3)-beta-D-galactopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-beta-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[beta-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose	E	8		N/A
Glycosylation Resources
GlyTouCan:  G95451PL GlyCosmos:  G95451PL GlyGen:  G95451PL

Entity ID: 4
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
N-acetyl-alpha-neuraminic acid-(2-3)-beta-D-galactopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-beta-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose	F	8		N/A
Glycosylation Resources
GlyTouCan:  G52095QZ GlyCosmos:  G52095QZ GlyGen:  G52095QZ

Entity ID: 5
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-mannopyranose-(1-3)-[beta-D-mannopyranose-(1-6)]alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	G, J	5		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G08748CW GlyCosmos:  G08748CW GlyGen:  G08748CW

Entity ID: 6
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-alpha-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	H, K	3		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G35926TG GlyCosmos:  G35926TG GlyGen:  G35926TG

Entity ID: 7
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-mannopyranose-(1-4)-beta-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	I, L	6		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G15110KA GlyCosmos:  G15110KA GlyGen:  G15110KA

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	M [auth C], N [auth D]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.10 Å
• R-Value Free: 0.284 
• R-Value Work: 0.252 
• R-Value Observed: 0.252 
• Space Group: P 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 142.987	α = 90
b = 142.987	β = 90
c = 67.655	γ = 120

Software Package:

Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-05-27 
Deposition Author(s): Herr, A.B., Ballister, E.R., Bjorkman, P.J.

Revision History  

• Version 1.0: 2003-05-27
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Non-polymer description, Version format compliance
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Structure summary
• Version 2.1: 2021-10-27
  Changes: Database references, Structure summary
• Version 2.2: 2023-08-16
  Changes: Data collection, Refinement description