2FCW

Structure of a Complex Between the Pair of the LDL Receptor Ligand-Binding Modules 3-4 and the Receptor Associated Protein (RAP).

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
other		SIRAS model built by ARP/WARP

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.2	298	40% MPD, 100 mM HEPES, 75 mM NaCl, 1.25 mM CaCl2, pH 7.2, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.38	48.27

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 118.523	α = 90
b = 30.019	β = 96.57
c = 58.143	γ = 90

Symmetry
Space Group	C 1 2 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 315	mirrors	2005-04-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	0.9793	NSLS	X29A

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	1.26	50	80	0.05	22.5	2.4		46566	1	1

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)
	1.26	1.31	57.1		0.324	2.2	1.9	3151

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	SIRAS	FREE R	built by ARP/WARP	1.26	50	4	44243	34481	2323	79.9	0.152	0.1346	0.152	0.2	RANDOM	18.3

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]

Coordinate Error
Structure Solution Method	Refinement High Resolution	Refinement Low Resolution
6	1315	1690.5

RMS Deviations
Key	Refinement Restraint Deviation
s_approx_iso_adps	0.087
s_non_zero_chiral_vol	0.066
s_zero_chiral_vol	0.059
s_similar_adp_cmpnt	0.058
s_angle_d	0.027
s_from_restr_planes	0.0224
s_anti_bump_dis_restr	0.015
s_bond_d	0.011
s_rigid_bond_adp_cmpnt	0.004
s_similar_dist

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1480
Nucleic Acid Atoms
Solvent Atoms	219
Heterogen Atoms	6

Software

Software
Software Name	Purpose
SHELX	model building
SHELXL-97	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
SOLVE	phasing

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.