1IAM

STRUCTURE OF THE TWO AMINO-TERMINAL DOMAINS OF HUMAN INTERCELLULAR ADHESION MOLECULE-1, ICAM-1

• PDB DOI: https://doi.org/10.2210/pdb1IAM/pdb

• Classification: Viral protein receptor
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): Yes 


• Deposited: 1998-02-22 Released: 1998-04-29 
• Deposition Author(s): Bella, J., Kolatkar, P.R., Marlor, C., Greve, J.M., Rossmann, M.G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.303 
• R-Value Work: 0.214 
• R-Value Observed: 0.214 

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 20.7 kDa 
• Atom Count: 1,597 
• Modelled Residue Count: 185 
• Deposited Residue Count: 185 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
INTERCELLULAR ADHESION MOLECULE-1	A	185	Homo sapiens	Mutation(s): 3
UniProt & NIH Common Fund Data Resources
Find proteins for P05362 (Homo sapiens) Explore P05362  Go to UniProtKB:  P05362
PHAROS:  P05362 GTEx:  ENSG00000090339

Small Molecules

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.303 
• R-Value Work: 0.214 
• R-Value Observed: 0.214 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 41.857	α = 90
b = 124.736	β = 90
c = 83.186	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1998-04-29 
Deposition Author(s): Bella, J., Kolatkar, P.R., Marlor, C., Greve, J.M., Rossmann, M.G.

Revision History  

• Version 1.0: 1998-04-29
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Non-polymer description, Version format compliance
• Version 1.3: 2011-11-16
  Changes: Atomic model
• Version 1.4: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Derived calculations, Structure summary
• Version 1.5: 2021-11-03
  Changes: Database references, Structure summary
• Version 1.6: 2023-08-09
  Changes: Refinement description