1BZQ

COMPLEX OF A DROMEDARY SINGLE-DOMAIN VHH ANTIBODY FRAGMENT WITH RNASE A

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.4		HANGING DROP METHOD. 5 MG/ML OF THE COMPLEX RESERVOIR SOLUTION IS 0.1 M POTASSIUM PHOSPHATE PH 6.4 15 TO 20% W/V PEG 8000, vapor diffusion - hanging drop

Crystal Properties
Matthews coefficient	Solvent content
2.11	50.77

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 66.52	α = 91.43
b = 66.82	β = 117.34
c = 69.34	γ = 97.33

Symmetry
Space Group	P 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	293	IMAGE PLATE	MARRESEARCH			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU

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	2.8	15	99.2	0.111	8.5	3.8		25413

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)
	2.8	2.9	98.2		0.336	3.9	3.9

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	PDB ENTRY 1RUV AND PDB ENTRY 1MEL	2.8	20	25796	1298	98.5	0.22234	0.28244	RANDOM	27.26

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_staggered_tor	25.9
p_transverse_tor	25.8
p_planar_tor	3.2
p_mcangle_it	1.524
p_scangle_it	1.39
p_mcbond_it	0.833
p_scbond_it	0.81
p_multtor_nbd	0.235
p_singtor_nbd	0.183
p_xyhbond_nbd	0.183
p_chiral_restr	0.094
p_angle_d	0.026
p_planar_d	0.021
p_bond_d	0.007
p_angle_deg
p_hb_or_metal_coord
p_plane_restr
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7544
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	20

Software

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