2EGD

Crystal structure of human S100A13 in the Ca2+-bound state

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	293	22% PEG 3350, 0.1M HEPES-NaOH (pH 7.5), 0.2M NaCl, 1.5% 1,2,3-heptanetriol, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
1.99	38.22

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 39.774	α = 90
b = 59.287	β = 90
c = 77.624	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	ADSC QUANTUM 315	Rotated-inclined double-crystal monochromator, rhodium-coated horizontal mirror	2006-06-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE BL41XU	1.0000	SPring-8	BL41XU

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	1.8	50	99.1	0.066	31.5	6.9		17786		3.4

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	1.8	1.86	93		0.335	3.4	6.3

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	PDB ENTRY 1XK4	1.8	47.14	16683	897	99.17	0.19732	0.19541	0.23418	RANDOM	24.001

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	29.698
r_dihedral_angle_4_deg	15.278
r_dihedral_angle_3_deg	12.271
r_dihedral_angle_1_deg	5.232
r_scangle_it	2.993
r_scbond_it	2.064
r_angle_refined_deg	1.467
r_mcangle_it	1.146
r_mcbond_it	0.859
r_nbtor_refined	0.308
r_nbd_refined	0.214
r_symmetry_hbond_refined	0.213
r_symmetry_vdw_refined	0.152
r_xyhbond_nbd_refined	0.143
r_chiral_restr	0.114
r_metal_ion_refined	0.083
r_bond_refined_d	0.018
r_gen_planes_refined	0.007
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1383
Nucleic Acid Atoms
Solvent Atoms	34
Heterogen Atoms	4

Software

Software
Software Name	Purpose
REFMAC	refinement
BSS	data collection
HKL-2000	data reduction
HKL-2000	data scaling
MOLREP	phasing