1IGY

STRUCTURE OF IMMUNOGLOBULIN

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1MCP	VL:VH DOMAIN PAIR OF PDB ENTRY 1MCP, CL:CH1 DOMAIN PAIR OF PDB ENTRY 2HFL, FC FRAGMENT OF PDB ENTRY 1IGT
experimental model	PDB	2HFL	VL:VH DOMAIN PAIR OF PDB ENTRY 1MCP, CL:CH1 DOMAIN PAIR OF PDB ENTRY 2HFL, FC FRAGMENT OF PDB ENTRY 1IGT
experimental model	PDB	1IGT	VL:VH DOMAIN PAIR OF PDB ENTRY 1MCP, CL:CH1 DOMAIN PAIR OF PDB ENTRY 2HFL, FC FRAGMENT OF PDB ENTRY 1IGT

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5.1		4 MICROLITERS OF 8.7 MG/ML MAB 61.1.3, 2 MICROLITERS OF 50 MILLIMOLAR SODIUM CITRATE PH 5, 1 MICROLITER OF N-TRIDECYL-B-D-MALTOSIDE, AND 5 MICROLITERS OF 12% PEG 3350 EQUILIBRATED AGAINST 700 MICROLITERS OF 12% PEG 3350, AT ROOM TEMPERATURE (CRYSCHEM PLATE)., pH 5.1

Crystal Properties
Matthews coefficient	Solvent content
3	59

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 66.65	α = 90
b = 190.66	β = 109.66
c = 73.1	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	291	IMAGE PLATE	MARRESEARCH	MIRROR	1995-06-27	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X12C		NSLS	X12C

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	3.2	99	95.6	0.145	6.4	3.3		27971			45.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	VL:VH DOMAIN PAIR OF PDB ENTRY 1MCP, CL:CH1 DOMAIN PAIR OF PDB ENTRY 2HFL, FC FRAGMENT OF PDB ENTRY 1IGT	3.2	20	3	21145	2064	75	0.211	0.211	0.327	RANDOM	57.1

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]

RMS Deviations
Key	Refinement Restraint Deviation
x_dihedral_angle_d	26.2
x_angle_deg	1.6
x_improper_angle_d	1.35
x_bond_d	0.009
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
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	10032
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	220

Software

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