1IGT

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 ENTRY 2HFL, FC FRAGMENT OF ENTRY 1FC1
experimental model	PDB	2HFL	VL:VH DOMAIN PAIR OF PDB ENTRY 1MCP, CL:CH1 DOMAIN PAIR OF ENTRY 2HFL, FC FRAGMENT OF ENTRY 1FC1
experimental model	PDB	1FC1	VL:VH DOMAIN PAIR OF PDB ENTRY 1MCP, CL:CH1 DOMAIN PAIR OF ENTRY 2HFL, FC FRAGMENT OF ENTRY 1FC1

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8	291	7 MICROLITERS OF 4.3 MG/ML MAB231, 3 MICROLITERS 50 MILLIMOLAR TRIS PH 8.0, AND 7 MICROLITERS 4% PEG 3350 EQUILIBRATED AGAINST 25 ML RESERVOIRS OF 4% PEG 3350, AT 18 DEGREE CELSIUS (SANDWICH PLATE)., temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
3.36	63

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 65.82	α = 88.05
b = 76.77	β = 92.35
c = 100.64	γ = 97.23

Symmetry
Space Group	P 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	AREA DETECTOR	XUONG-HAMLIN MULTIWIRE		1992-11-13	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym 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	2.8	76.1	99	0.1	7.1	4.4		47595			45.5

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 ENTRY 2HFL, FC FRAGMENT OF ENTRY 1FC1	2.8	20	4	41371	4149	86.2	0.209	0.209	0.297	RANDOM	52

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	27.1
x_scangle_it	11.39
x_mcangle_it	9.6
x_scbond_it	7.88
x_mcbond_it	5.9
x_angle_deg	1.6
x_improper_angle_d	1.4
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

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	10214
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	220

Software

Software
Software Name	Purpose
HOWARD	data collection
NIELSEN	data collection
HOWARD	data reduction
NIELSEN	data reduction
X-PLOR	model building
X-PLOR	refinement
XENGEN	data reduction
XUONG)	data reduction
XENGEN	data scaling
NIELSEN	data scaling
XUONG)	data scaling
X-PLOR	phasing