3M17

Crystal structure of human FcRn with a monomeric peptide inhibitor

X-RAY DIFFRACTION

Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
2	VAPOR DIFFUSION, SITTING DROP	4.2	277	2uL protein:peptide with 2ul solution of 100mM sodium phosphate/citric acid, 20% PEG 3350, 8% ethanol, pH 4.2, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 114.32	α = 90
b = 118.3	β = 90
c = 248.33	γ = 90

Symmetry
Space Group	C 2 2 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray					2007-09-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 4.2.2	1.0	ALS	4.2.2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.6	41.1	98.7			51434	51434		-4

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.6	2.69	97.8

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1EXU	2.6	41.1	48725	48725	2606	100	0.26408	0.2608	0.32548	RANDOM	31.112

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]
0.02			-0.58		0.56

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.761
r_dihedral_angle_3_deg	17.564
r_dihedral_angle_4_deg	17.337
r_dihedral_angle_1_deg	5.177
r_angle_refined_deg	0.962
r_nbtor_refined	0.296
r_symmetry_vdw_refined	0.176
r_nbd_refined	0.175
r_xyhbond_nbd_refined	0.125
r_symmetry_hbond_refined	0.11

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.761
r_dihedral_angle_3_deg	17.564
r_dihedral_angle_4_deg	17.337
r_dihedral_angle_1_deg	5.177
r_angle_refined_deg	0.962
r_nbtor_refined	0.296
r_symmetry_vdw_refined	0.176
r_nbd_refined	0.175
r_xyhbond_nbd_refined	0.125
r_symmetry_hbond_refined	0.11
r_chiral_restr	0.066
r_bond_refined_d	0.006
r_gen_planes_refined	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	11398
Nucleic Acid Atoms
Solvent Atoms	183
Heterogen Atoms

Software

Software
Software Name	Purpose
PHASER	phasing
REFMAC	refinement
d*TREK	data reduction
d*TREK	data scaling

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.