1Q6I

Crystal structure of a truncated form of FkpA from Escherichia coli, in complex with immunosuppressant FK506

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1FD9	FkpA (individual N- and C-domains)

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.5	290	PEG 2000, sodium acetate, pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 290K

Crystal Properties
Matthews coefficient	Solvent content
2.6	52.78

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 37.14	α = 90
b = 85.44	β = 90
c = 159.57	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	110	CCD	ADSC QUANTUM 4		2003-03-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-2	0.933	ESRF	ID14-2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	2.25	30	91.4	0.076	0.068	7.1	4.4	22702	22702		-3	39.47

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.25	2.37	81.2		0.259	0.22	2.1	3.4	2744

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	rigid-body refinement	THROUGHOUT	FkpA (individual N- and C-domains)	2.25	30	21956	21956	700	90.63	0.2079	0.2079	0.20642	0.25344	RANDOM	24.929

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]
-1.08			3.3		-2.21

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	17.025
r_dihedral_angle_1_deg	4.043
r_scangle_it	3.075
r_scbond_it	1.939
r_mcangle_it	1.838
r_angle_refined_deg	1.758
r_angle_other_deg	1.13
r_mcbond_it	1.111
r_nbtor_other	0.333
r_nbd_refined	0.237
r_xyhbond_nbd_other	0.234
r_symmetry_vdw_other	0.222
r_nbd_other	0.216
r_symmetry_hbond_refined	0.196
r_symmetry_vdw_refined	0.191
r_xyhbond_nbd_refined	0.184
r_chiral_restr	0.109
r_bond_refined_d	0.016
r_gen_planes_refined	0.005
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3224
Nucleic Acid Atoms
Solvent Atoms	230
Heterogen Atoms	114

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
CCP4	data scaling
AMoRE	phasing