3G8C

Crystal Structure of Biotin Carboxylase in Complex with Biotin, Bicarbonate, ADP and Mg Ion

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8	298	23% PEG3350, 0.12M Li2SO4, 3.9% SORBITOL, pH 8.0, VAPOR DIFFUSION, SITTING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.75	55.29

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 83.317	α = 90
b = 106.166	β = 90
c = 121.486	γ = 90

Symmetry
Space Group	P 21 21 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	MAR		2008-04-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X4C	0.979	NSLS	X4C

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	2	30	99.2	0.063	21.641	5		73059

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	2	2.07	99.5		0.343		4.8	7221

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2	30	72986	3678	99.17	0.184	0.182	0.216	RANDOM	32.57

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]
0.56			0.97		-1.53

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.596
r_dihedral_angle_4_deg	16.802
r_dihedral_angle_3_deg	14.187
r_dihedral_angle_1_deg	4.994
r_scangle_it	2.581
r_scbond_it	1.532
r_angle_refined_deg	1.184
r_mcangle_it	0.997
r_mcbond_it	0.581
r_symmetry_hbond_refined	0.47
r_nbtor_refined	0.298
r_nbd_refined	0.184
r_symmetry_vdw_refined	0.183
r_xyhbond_nbd_refined	0.147
r_chiral_restr	0.077
r_metal_ion_refined	0.024
r_bond_refined_d	0.009
r_gen_planes_refined	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6842
Nucleic Acid Atoms
Solvent Atoms	856
Heterogen Atoms	96

Software

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