3NI5 | pdb_00003ni5

Carbonic anhydrase inhibitor: C1 family

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1CA2	PDB ENTRY 1CA2

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.8	277	100mM Tris.HCl pH 7.7-7.8, 2mM sodium 4-(hydroxymercury)benzoate, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.1	41.31

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 41.79	α = 90
b = 42.11	β = 104.4
c = 72.02	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	CCD	OXFORD SAPPHIRE CCD		2007-05-03	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SEALED TUBE	OXFORD DIFFRACTION ENHANCE ULTRA	1.54

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	2.1	20		0.042	18.9	2.7		13657	2

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	2.1	2.2			0.315	4	2.5	1951

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	PDB ENTRY 1CA2	2.1	10.32	11970	645	87.78	0.23135	0.22912	0.2303	0.27182	0.2749	RANDOM	21.361

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]
0.19		0.7	-0.61		0.77

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.996
r_dihedral_angle_3_deg	19.073
r_dihedral_angle_4_deg	14.17
r_dihedral_angle_1_deg	7.401
r_scangle_it	2.523
r_scbond_it	1.786
r_angle_refined_deg	1.762
r_mcangle_it	1.058
r_mcbond_it	0.625
r_nbtor_refined	0.306
r_symmetry_hbond_refined	0.289
r_symmetry_vdw_refined	0.247
r_nbd_refined	0.232
r_xyhbond_nbd_refined	0.216
r_metal_ion_refined	0.18
r_chiral_restr	0.11
r_bond_refined_d	0.013
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2039
Nucleic Acid Atoms
Solvent Atoms	131
Heterogen Atoms	32

Software

Software
Software Name	Purpose
CrysalisPro	data collection
AMoRE	phasing
REFMAC	refinement
CrysalisPro	data reduction
SCALEPACK	data scaling