1NXX | pdb_00001nxx

MicArec pH 5.5

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1NXT	PDB ENTRY 1NXT

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5.5	293	40%v/v PEG 400, 200mM Mgcl2, 100mM citrate, pH 5.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.52	50.83

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 80.756	α = 90
b = 92.416	β = 90
c = 36.662	γ = 90

Symmetry
Space Group	C 2 2 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 4		2002-09-07	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SRS BEAMLINE PX14.1	1.488	SRS	PX14.1

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	1.9	39.2	95.04	0.1	6.4			10590	2	2	31.22

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	1.9	1.95	96		0.502	2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Cut-off Sigma (F)	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	THROUGHOUT	PDB ENTRY 1NXT	1.9	40	2	2	9654	1038	95.4	0.1991	0.19545	0.21	0.23291	0.23	RANDOM	31.22

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]
2.99			-2.5		-0.49

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.269
r_scangle_it	5.441
r_scbond_it	3.046
r_mcangle_it	2.264
r_angle_refined_deg	1.737
r_mcbond_it	1.233
r_angle_other_deg	0.866
r_symmetry_vdw_other	0.348
r_symmetry_vdw_refined	0.276
r_nbd_refined	0.274
r_nbd_other	0.268
r_xyhbond_nbd_refined	0.231
r_symmetry_hbond_refined	0.173
r_nbtor_other	0.091
r_chiral_restr	0.09
r_bond_refined_d	0.019
r_gen_planes_refined	0.006
r_bond_other_d	0.005
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	903
Nucleic Acid Atoms
Solvent Atoms	60
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling
MOLREP	phasing