1NQD

CRYSTAL STRUCTURE OF CLOSTRIDIUM HISTOLYTICUM COLG COLLAGENASE COLLAGEN-BINDING DOMAIN 3B AT 1.65 ANGSTROM RESOLUTION IN PRESENCE OF CALCIUM

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	Other		molecular replacement using undeposited structure, which in turn was solved by fourier synthesis using 1NQJ as initial model

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	277	PEG 3350, lithium chloride, sodium acetate, glycerol, calcium nitrate, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
1.92	36

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 40.867	α = 90
b = 59.401	β = 98.73
c = 48.572	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	100	CCD	BRANDEIS		2000-10-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X25	0.97950	NSLS	X25

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	1.65	8	98.6	0.058	12.64	4.2	27831	27436

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)
	1.65	1.71	90.9		0.248	4.36	3.3	2526

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R	APO-COLGS3B	1.65	8	27152	27152	2715	98.8	0.1908	0.1908	0.1852	0.2543	RANDOM

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]

Coordinate Error
Structure Solution Method	Refinement High Resolution	Refinement Low Resolution
18		2119.5

RMS Deviations
Key	Refinement Restraint Deviation
s_similar_adp_cmpnt	0.069
s_non_zero_chiral_vol	0.056
s_zero_chiral_vol	0.038
s_from_restr_planes	0.0268
s_angle_d	0.024
s_bond_d	0.007
s_similar_dist
s_anti_bump_dis_restr
s_rigid_bond_adp_cmpnt
s_approx_iso_adps

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1899
Nucleic Acid Atoms
Solvent Atoms	313
Heterogen Atoms	4

Software

Software
Software Name	Purpose
SHELXL-97	refinement
HKL-2000	data reduction
CNS	refinement
SHELX	model building
HKL-2000	data collection
HKL-2000	data scaling
CNS	phasing

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.