3MNH | pdb_00003mnh

Human Carbonic Anhydrase II Mutant K170A

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
2.14	42.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.645	α = 90
b = 41.564	β = 104.5
c = 72.75	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	1.65	50	98.4	0.069	12.5	2.7		29564

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)
	1.65	1.71	98.1		0.414	2.1	2.6	2901

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	1.65	20.78	28016	1518	98.37	0.15624	0.15452	0.1541	0.18783	0.1861	RANDOM	18.029

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	36.45
r_dihedral_angle_4_deg	24.331
r_dihedral_angle_3_deg	14.693
r_scangle_it	6.626
r_dihedral_angle_1_deg	6.292
r_scbond_it	4.12
r_mcangle_it	2.793
r_angle_refined_deg	2.142
r_mcbond_it	1.579
r_chiral_restr	0.18
r_bond_refined_d	0.027
r_gen_planes_refined	0.014

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2054
Nucleic Acid Atoms
Solvent Atoms	136
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