1HDA

A NOVEL ALLOSTERIC MECHANISM IN HAEMOGLOBIN. STRUCTURE OF BOVINE DEOXYHAEMOGLOBIN, ABSENCE OF SPECIFIC CHLORIDE-BINDING SITES AND ORIGIN OF THE CHLORIDE-LINKED BOHR EFFECT IN BOVINE AND HUMAN HAEMOGLOBIN


X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 63.82 α = 90
b = 95.51 β = 90
c = 105.32 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline

Refinement

Statistics
Structure Solution Method Refinement High Resolution Refinement Low Resolution Cut-off Sigma (I) Cut-off Sigma (F) Number of Reflections (All) Number of Reflections (Observed) Number of Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work R-Free R-Free Selection Details
-- 2.2 -- -- -- -- -- -- -- -- -- -- -- --
RMS Deviations
Key Refinement Restraint Deviation
x_bond_d 0.009
x_angle_d 0.032
x_angle_deg 2.1
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 4386
Nucleic Acid Atoms 0
Heterogen Atoms 172
Solvent Atoms 42

Software

Computing
Computing Package Purpose
X-PLOR Structure Solution
PROLSQ, X-PLOR Structure Refinement
Software
Software Name Purpose
X-PLOR refinement
PROLSQ refinement
X-PLOR model building