3MNK | pdb_00003mnk

Human Carbonic Anhydrase II Mutant K170H

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	298	1.3M Sodium Citrate, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.13	42.37

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.716	α = 90
b = 41.562	β = 104.53
c = 72.772	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	298	IMAGE PLATE	RIGAKU RAXIS IV++		2008-02-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RUH3R	1.54178

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	1.75	50	92.7	0.054	19	3.2		23388

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)
	1.75	1.81	80.9		0.323	3.3	3.1	2025

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	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	1TBT	1.75	24.81	22180	1193	92.62	0.15216	0.15034	0.1504	0.18607	0.1867	RANDOM	18.036

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	38.441
r_dihedral_angle_4_deg	25.537
r_dihedral_angle_3_deg	15.366
r_dihedral_angle_1_deg	6.53
r_scangle_it	6.443
r_scbond_it	3.971
r_mcangle_it	2.68
r_angle_refined_deg	2.008
r_mcbond_it	1.516
r_chiral_restr	0.16
r_bond_refined_d	0.026
r_gen_planes_refined	0.013

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2059
Nucleic Acid Atoms
Solvent Atoms	102
Heterogen Atoms	2

Software

Software
Software Name	Purpose
CrystalClear	data collection
CCP4	model building
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
CCP4	phasing