2A9M

Structural Analysis of a Tight-binding Fluorescein-scFv; apo form

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1A7N	PDB Entry: 1A7N

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.5	298	1.6 M ammonium sulfate, 150 mM sodium citrate , pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.4	48

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.9	α = 90
b = 73.5	β = 97.11
c = 70.7	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	CCD	ADSC QUANTUM 4		2000-11-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4	0.98	ESRF	ID14-4

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	2.1	15	94.44			27511	27511

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	2.1	2.153	97.48

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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB Entry: 1A7N	2.1	15	27511	27511	1022	94.44	0.21219	0.21219	0.21023	0.26328	RANDOM	14.845

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]
0.33		0.2	-0.48		0.2

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.24
r_dihedral_angle_4_deg	22.667
r_dihedral_angle_3_deg	17.914
r_dihedral_angle_1_deg	6.905
r_scangle_it	1.927
r_angle_refined_deg	1.319
r_scbond_it	1.289
r_mcangle_it	0.902
r_angle_other_deg	0.811
r_mcbond_it	0.743
r_nbd_refined	0.199
r_nbd_other	0.193
r_symmetry_hbond_refined	0.193
r_nbtor_refined	0.177
r_symmetry_vdw_other	0.172
r_xyhbond_nbd_refined	0.163
r_symmetry_vdw_refined	0.108
r_mcbond_other	0.1
r_chiral_restr	0.087
r_nbtor_other	0.087
r_bond_refined_d	0.011
r_gen_planes_refined	0.004
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3510
Nucleic Acid Atoms
Solvent Atoms	315
Heterogen Atoms

Software

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