3FNK

Crystal structure of the second type II cohesin module from the cellulosomal adaptor ScaA scaffoldin of Acetivibrio cellulolyticus

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	293	0.2M ammonium sulfate, 0.1M Sodium acetate trihydrate, 25% PEG 4000, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.81	56.18

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 90.359	α = 90
b = 68.645	β = 90
c = 111.294	γ = 90

Symmetry
Space Group	P 21 21 21

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	ADSC QUANTUM 315		2006-06-19	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-3	0.9393	ESRF	ID14-3

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	1.99	30	95.5	0.096	0.096	19.6	7.45	47999	47999			24

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.99	2.07	74.9		0.48	0.48	2.1		3559

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	THROUGHOUT	PDB entry 1QZN	1.99	29.07	47999	43461	2305	95.14	0.18472	0.18472	0.18239	0.22884	RANDOM	31.01

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]
2.23			-0.24		-2

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	41.891
r_dihedral_angle_3_deg	14.989
r_dihedral_angle_4_deg	12.531
r_dihedral_angle_1_deg	7.28
r_scangle_it	3.958
r_scbond_it	2.439
r_mcangle_it	1.632
r_angle_refined_deg	1.569
r_mcbond_it	0.93
r_chiral_restr	0.118

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	41.891
r_dihedral_angle_3_deg	14.989
r_dihedral_angle_4_deg	12.531
r_dihedral_angle_1_deg	7.28
r_scangle_it	3.958
r_scbond_it	2.439
r_mcangle_it	1.632
r_angle_refined_deg	1.569
r_mcbond_it	0.93
r_chiral_restr	0.118
r_bond_refined_d	0.017
r_gen_planes_refined	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4069
Nucleic Acid Atoms
Solvent Atoms	556
Heterogen Atoms	54

Software

Software
Software Name	Purpose
ProDC	data collection
MOLREP	phasing
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	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 R01GM133198.