1ZTG | pdb_00001ztg

human alpha polyC binding protein KH1

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1EC6	1EC6 (with oligonucleotide removed)

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	310	cacodylate, MPD, magnesium acetate, NaCl, EDTA, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 310K

Crystal Properties
Matthews coefficient	Solvent content
2.83	56

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 45.6	α = 90
b = 76.8	β = 111.7
c = 61.4	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	AREA DETECTOR	MARRESEARCH	Osmic	2004-12-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200	1.54

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	3	45.8	99.8	0.057	22.1	4.7	8000	7978		-3	83

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	3	3.11	99.8		0.658	2.2	5.2

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1EC6 (with oligonucleotide removed)	3	20	8000	7576	368	99.8	0.24269	0.24012	0.24012	0.23	0.29285	0.27	RANDOM	77.058

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
r_dihedral_angle_2_deg	44.972
r_dihedral_angle_3_deg	21.859
r_dihedral_angle_4_deg	17.706
r_dihedral_angle_1_deg	5.576
r_angle_refined_deg	1.317
r_scangle_it	0.676
r_scbond_it	0.449
r_nbtor_refined	0.304
r_mcangle_it	0.29
r_nbd_refined	0.241
r_symmetry_vdw_refined	0.234
r_xyhbond_nbd_refined	0.163
r_mcbond_it	0.161
r_symmetry_hbond_refined	0.093
r_chiral_restr	0.077
r_bond_refined_d	0.01
r_gen_planes_refined	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2218
Nucleic Acid Atoms	308
Solvent Atoms
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing