1LGN | pdb_00001lgn

DECAMERIC DAMP COMPLEX OF HUMAN SERUM AMYLOID P COMPONENT

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1SAC	PDB ENTRY 1SAC WITHOUT WATER MOLECULES AND ACETATE IONS, ALL B-FACTORS SET TO 40 A**2

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	277	3 + 3 UL HANGING DROPS AT 277K PROTEIN SOLUTION: 20 MG/ML PROTEIN, 10 MM TRIS-HCL, PH 8.0, 140 MM NACL, 20 MM DAMP, 0.02 % NA-AZIDE. RESERVOIR SOLUTION: 100 MM BIS-TRIS PROPANE- HCL PH 8.0, 20 MM CALCIUM CHLORIDE, 12-14 % (W/V) POLYETHYLENEGLYCOL 4000., vapor diffusion - hanging drop

Crystal Properties
Matthews coefficient	Solvent content
4.24	71

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 190.03	α = 90
b = 190.03	β = 90
c = 119.74	γ = 90

Symmetry
Space Group	P 41 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	277	IMAGE PLATE	MARRESEARCH		1996-07-05	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SRS BEAMLINE PX9.6		SRS	PX9.6

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	2.8	30	98	0.085	6.8	6.9		366263			62

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.8	2.9	97.5		0.443	1.4	6.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R	PDB ENTRY 1SAC WITHOUT WATER MOLECULES AND ACETATE IONS, ALL B-FACTORS SET TO 40 A**2	2.8	8	48167	2478	97.7	0.232	0.232	0.21	0.252	0.23	THIN RESOLUTION SHELLS	50

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]
16.2			16.2		-32.5

RMS Deviations
Key	Refinement Restraint Deviation
x_angle_deg	1.6
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
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d
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	8245
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	120

Software

Software
Software Name	Purpose
MOSFLM	data reduction
CCP4	data reduction
X-PLOR	model building
X-PLOR	refinement
CCP4	data scaling
X-PLOR	phasing