Experiment: 5LFG

X-ray structure of a new fully ligated carbomonoxy form of Trematomus newnesi hemoglobin (Hb1TnCO).

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	MICRODIALYSIS	8	277	Crystallization trials were performed under CO atmosphere. The dialysis technique was used to obtain protein crystals: the protein, in a 50 mM Tris pH 8.0 buffer with 2mM dithionite, with a concentration of 5 mg x ml-1, was separated by the precipitant reservoir (2.0 M ammonium sulphate, 2 mM dithionite) via a dialysis membrane with a 8000 Da cutoff. Single crystals of the carbomonoxylated Hb1Tn (Hb1TnCO), suitable for X-ray diffraction, were grown in a week (size 0,2 x 0,2 x 0,1 mm3).

Crystal Properties
Matthews coefficient	Solvent content
3.16	61.06

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 86.206	α = 90
b = 87.256	β = 101.81
c = 109.648	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	ENRAF-NONIUS		2000-07-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF	1.5418

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	1.94	8	93.5	0.073	4	2.6		55016

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	1.94		80.4		0.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work (Depositor)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION		THROUGHOUT	1.94	8	4479	93.5	0.181	0.245	0.231	RANDOM

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4461
Nucleic Acid Atoms
Solvent Atoms	213
Heterogen Atoms	180

Software

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