1E4W

crossreactive binding of a circularized peptide to an anti-TGFalpha antibody Fab-fragment

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8.5		PROTEIN IN TRIS-HCL, 8.5 11-14 MG/ML PRECIPITANT: 12% PEG MME 2000, 5 MM NICL2, 0.1 M TRIS-HCL, PH 8.5

Crystal Properties
Matthews coefficient	Solvent content
3	51.1

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.22	α = 90
b = 94.35	β = 90
c = 121.79	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	XRAY RESEARCH		1999-06-17	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MPG/DESY, HAMBURG BEAMLINE BW6		MPG/DESY, HAMBURG	BW6

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	1.95	74.5	94.6	0.081	19.5	9.9		39968			30

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	1.95	1.98	54.2		0.288	5.7	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-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1FBI	1.95	20	41695	2099	94.6	0.204	0.269	RANDOM	35.9

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
p_transverse_tor	21.6
p_staggered_tor	18.4
p_planar_tor	8.2
p_scangle_it	4.378
p_mcangle_it	3.317
p_scbond_it	3.148
p_mcbond_it	2.508
p_chiral_restr	0.288
p_multtor_nbd	0.259
p_singtor_nbd	0.188
p_planar_d	0.066
p_angle_d	0.045
p_plane_restr	0.0284
p_bond_d	0.024
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_xyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3331
Nucleic Acid Atoms
Solvent Atoms	409
Heterogen Atoms	2

Software

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