The density of the crystal, expressed as the ratio of the volume of the asymmetric unit to the molecular mass of a monomer of the structure, in units of angstroms^3^ per dalton.
Ref: Matthews, B. W. (1968). J. Mol. Biol. 33, 491-497.
Examples: null
Density values measured using standard chemical and physical methods. The units are megagrams per cubic metre (grams per cubic centimetre).
Density value P calculated from the crystal cell and contents, expressed as per cent solvent.
P = 1 - (1.23 N MMass) / V
N = the number of molecules in the unit cell MMass = the molecular mass of each molecule (gm/mole) V = the volume of the unit cell (A^3^) 1.23 = a conversion factor evaluated as:
(0.74 cm^3^/g) (10^24^ A^3^/cm^3^)
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(6.02*10^23^) molecules/mole
where 0.74 is an assumed value for the partial specific
volume of the molecule
A description of the quality and habit of the crystal. The crystal dimensions should not normally be reported here; use instead the specific items in the EXPTL_CRYSTAL category relating to size for the gross dimensions of the crystal and data items in the EXPTL_CRYSTAL_FACE category to describe the relationship between individual faces.
The value of _exptl_crystal.id must uniquely identify a record in the EXPTL_CRYSTAL list.
Note that this item need not be a number; it can be any unique identifier.
The of the distribution of mis-orientation angles specified in degrees of all the unit cells in the crystal. Lower mosaicity indicates better ordered crystals.
The uncertainty in the mosaicity estimate for the crystal.
Details of crystal growth and preparation of the crystal (e.g. mounting) prior to the intensity measurements.
Examples: mounted in an argon-filled quartz capillary
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The colour of the crystal.
Examples: dark green