"Evidence for the occurrence of the Pauling-Corey alpha-helix in synthetic polypeptides"

Date:
1951-1952
Reference:
PP/CRI/H/1/5
Catalogue details

Licence: In copyright

Credit: "Evidence for the occurrence of the Pauling-Corey alpha-helix in synthetic polypeptides". Source: Wellcome Collection.

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    VI. Calculation of structure factors in a general case . If a crystal contains several sets of spirals which are non-parallel and generally displaced, the transform of each spiral can be calculated by substitution of a general trans formation of co-ordinates, such as Such a general case will be, however, rare, as any long spirals will tend to pack with their axes parallel. Then X 3 * = + ¿* . T Let Then T - A + where A = ¿ C C«r> ITC + 8nd B - £ iL <*■> ir - í C ~ ^ , where the summation is over all the spirals. It is useful to tabulate the values of CVyv end as functions of rR and $ ; they are very valuable for required calculation of the structure factors.