1NT8

Structural Characterisation of the Holliday junction formed by the sequence CCGGTACCGG at 2.00 A

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	290	MPD, Calcium chloride, cacodylate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 290K

Crystal Properties
Matthews coefficient	Solvent content
2.15	42.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 65.949	α = 90
b = 23.756	β = 109.98
c = 37.204	γ = 90

Symmetry
Space Group	C 1 2 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	MARRESEARCH		2002-05-16	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X11	0.811	EMBL/DESY, HAMBURG	X11

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	1.91	34.92	97.6	0.103	0.106	4.18	4	6058	4276	1	1	34.53

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)
	1.91	2.01	97.4		0.849	0.849	0.8	3.9	624

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Cut-off Sigma (F)	Number Reflections (All)	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	2	34.92	1	1	4940	3539	167	97.37	0.24834	0.24659	0.28262	RANDOM	34.53

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]
-1.19		-0.77	2.84		-2.17

RMS Deviations
Key	Refinement Restraint Deviation
r_scangle_it	4.77
r_angle_refined_deg	3.768
r_scbond_it	3.613
r_angle_other_deg	1.779
r_symmetry_vdw_other	0.378
r_xyhbond_nbd_refined	0.282
r_nbd_other	0.227
r_symmetry_vdw_refined	0.204
r_nbd_refined	0.17
r_symmetry_hbond_refined	0.128

RMS Deviations
Key	Refinement Restraint Deviation
r_scangle_it	4.77
r_angle_refined_deg	3.768
r_scbond_it	3.613
r_angle_other_deg	1.779
r_symmetry_vdw_other	0.378
r_xyhbond_nbd_refined	0.282
r_nbd_other	0.227
r_symmetry_vdw_refined	0.204
r_nbd_refined	0.17
r_symmetry_hbond_refined	0.128
r_chiral_restr	0.117
r_nbtor_other	0.117
r_metal_ion_refined	0.043
r_bond_refined_d	0.024
r_gen_planes_refined	0.02
r_bond_other_d	0.002
r_gen_planes_other

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	404
Solvent Atoms	37
Heterogen Atoms	2

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling
XTALVIEW	refinement

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.