Experiment: 1B2K

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	193L

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		4.5	291	THE ISOIONIC PROTEIN HEWL WAS ACIDIFIED BY ADDING OF HI UNTIL THE PH 4.5 WAS REACHED AT 291K WERE 25 MG/ML OF PROTEIN AND 0.07 M OF NAI VERSUS A WELL CONTAINING 0.14 M OF NAI AT PH4.5

Crystal Properties
Matthews coefficient	Solvent content
1.8	33

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 27.73	α = 90
b = 62.79	β = 90.1
c = 59.84	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	293	IMAGE PLATE	MARRESEARCH		1992-12-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	LURE BEAMLINE DW32		LURE	DW32

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	1.6	13.3	96.7	0.095	5.2	3.1		26152			15.2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.6	1.64	95.6		0.54	1.3	2.8

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 Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	193L	1.6	8	26000	2612	96.6	0.198	0.198	0.18	0.237	RANDOM	16.4

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	25.27
x_scangle_it	3.7
x_scbond_it	3.21
x_mcangle_it	2.73
x_mcbond_it	2.5
x_angle_deg	1.16
x_improper_angle_d	0.59
x_bond_d	0.004
x_bond_d_na
x_bond_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2014
Nucleic Acid Atoms
Solvent Atoms	291
Heterogen Atoms	19

Software

Software
Software Name	Purpose
MOSFLM	data reduction
Agrovata	data reduction
CCP4	data reduction
AMoRE	phasing
X-PLOR	refinement
Agrovata	data scaling

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.