1IAM

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


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1ZXQICAM-2, PDB ENTRY 1ZXQ

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
17.5PROTEIN IN 10 MM TRIS, PH 7.5, 25 MM NACL, WAS CRYSTALLIZED FROM 20% PEG 4000 IN 10 MM TRIS AS PRECIPITANT
Crystal Properties
Matthews coefficientSolvent content
2.6553.56

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 41.857α = 90
b = 124.736β = 90
c = 83.186γ = 90
Symmetry
Space GroupC 2 2 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray120CCD1995-02-26M
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONCHESS BEAMLINE A1CHESSA1

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
12.12081.10.03624.15310629225.1
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.12.1733.40.05910.210.3

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENT, MIR, PHASE RECOMBINATIONTHROUGHOUTICAM-2, PDB ENTRY 1ZXQ2.15959997179.50.2140.2140.303RANDOM24.6
Temperature Factor Modeling
Anisotropic B[1][1]Anisotropic B[1][2]Anisotropic B[1][3]Anisotropic B[2][2]Anisotropic B[2][3]Anisotropic B[3][3]
3.7699-0.906-2.8639
RMS Deviations
KeyRefinement Restraint Deviation
x_dihedral_angle_d28.2
x_scangle_it2.71
x_scbond_it2.12
x_mcangle_it1.81
x_angle_deg1.7
x_improper_angle_d1.6
x_mcbond_it1.27
x_bond_d0.009
x_bond_d_na
x_bond_d_prot
RMS Deviations
KeyRefinement Restraint Deviation
x_dihedral_angle_d28.2
x_scangle_it2.71
x_scbond_it2.12
x_mcangle_it1.81
x_angle_deg1.7
x_improper_angle_d1.6
x_mcbond_it1.27
x_bond_d0.009
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1436
Nucleic Acid Atoms
Solvent Atoms147
Heterogen Atoms14

Software

Software
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
X-PLORmodel building
X-PLORrefinement
X-PLORphasing