5OCX

Crystal structure of ACPA E4 in complex with CII-C-13-CIT

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4M1Q	4M1Q,3LMJ
experimental model	PDB	3LMJ	4M1Q,3LMJ

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		293	20% (w/v) PEG3350, 0.2 M ammonium citrate dibasic

Crystal Properties
Matthews coefficient	Solvent content
1.82	32.06

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 38.716	α = 90
b = 99.602	β = 101.88
c = 51.877	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	PIXEL	DECTRIS PILATUS 6M-F		2016-01-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I02	0.9795	Diamond	I02

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rpim I (All)	CC (Half)	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	45.23	97.3	0.083	0.076	0.994	7.5	3.1		37660			15.2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.75	1.78	90		0.584	0.539	0.606	1.3	2.7

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	4M1Q,3LMJ	1.75	45.23	35680	1948	97.13	0.17812	0.17623	0.21231	RANDOM	23.114

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		1.04	-2.03		1.3

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.371
r_dihedral_angle_4_deg	22.595
r_dihedral_angle_3_deg	11.687
r_dihedral_angle_1_deg	6.606
r_long_range_B_refined	4.627
r_long_range_B_other	4.627
r_scangle_other	2.443
r_mcangle_other	2.195
r_mcangle_it	2.193
r_angle_other_deg	1.581
r_scbond_it	1.532
r_scbond_other	1.531
r_angle_refined_deg	1.428
r_mcbond_it	1.337
r_mcbond_other	1.334
r_chiral_restr	0.08
r_bond_refined_d	0.009
r_gen_planes_refined	0.006
r_bond_other_d	0.002
r_gen_planes_other	0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3356
Nucleic Acid Atoms
Solvent Atoms	400
Heterogen Atoms	4

Software

Software
Software Name	Purpose
REFMAC	refinement
xia2	data reduction
Aimless	data scaling
PHASER	phasing