Experiment: 1A8E

HUMAN SERUM TRANSFERRIN, RECOMBINANT N-TERMINAL LOBE

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	Other		RABBIT TRANSFERRIN

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.75	277	PROTEIN WAS CRYSTALLIZED FROM 26% PEG 4000. BUFFER WAS 40MM NA CACODYLATE, PH 5.75, WITH 20MM NA BICARBONATE. CRYSTALS GROWN AT 4 DEGREES C USING THE HANGING DROP METHOD., vapor diffusion - hanging drop, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.4	50

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 45.12	α = 90
b = 57.91	β = 90
c = 135.64	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	298	IMAGE PLATE	RIGAKU RAXIS IIC		1990-05-02	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RUH2R

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	1.6	30	82.4	0.061	14.6	1.8		39418		3	35

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	RABBIT TRANSFERRIN	1.6	30	38344	38344		80.1	0.181	0.1728

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
t_dihedral_angle_d	20.7
t_it	1.89
t_angle_deg	1.35
t_nbd	0.118
t_gen_planes	0.016
t_bond_d	0.014
t_trig_c_planes	0.013
t_incorr_chiral_ct
t_pseud_angle

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2567
Nucleic Acid Atoms
Solvent Atoms	138
Heterogen Atoms	9

Software

Software
Software Name	Purpose
R-AXIS	data collection
R-AXIS	data reduction
TNT	refinement
R-AXIS	data scaling