4JC6

Mercury activation of the plant aquaporin SoPIP2;1 - structural and functional characterization

X-RAY DIFFRACTION

---

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1Z98	PDB ENTRY 1Z98

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	280	The protein was incubated with 5mM HgCl2, and excess HgCl2 was washed away. Crystallisation condition was 26% PEG400, 25mM Tris pH 7.0, 100mM NaCl. The precipitant solution was mixed with 1/5 0.1M CdCl2. Protein and precipitant solution was mixed in 1:1 ratio , VAPOR DIFFUSION, HANGING DROP, temperature 280K

Crystal Properties
Matthews coefficient	Solvent content
3.42	63.99

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 123.546	α = 90
b = 141.818	β = 90
c = 186.515	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	ADSC QUANTUM 315		2008-04-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X25	0.9795	NSLS	X25

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	2.15	30	99.8	0.129	5.9	6		176544

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	2.15	2.23	98.9		0.639		5.6

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-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1Z98	2.152	29.9	167468	8822	99.43	0.19843	0.19693	0.22704	RANDOM	31.716

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]
-0.71			2.15		-1.44

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.125
r_dihedral_angle_3_deg	15.345
r_dihedral_angle_4_deg	13.168
r_dihedral_angle_1_deg	5.642
r_mcangle_it	2.63
r_scbond_it	2.603
r_mcbond_it	1.774
r_angle_refined_deg	1.333
r_chiral_restr	0.088
r_bond_refined_d	0.012
r_gen_planes_refined	0.008
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_it
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	15026
Nucleic Acid Atoms
Solvent Atoms	616
Heterogen Atoms	309

Software

Software
Software Name	Purpose
SCALEPACK	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
DENZO	data reduction