Abstract
Dr. W. T. Astbury, Miss Florence Bell, Prof. E. Gorter and Dr. J. van Ormondt have built up protein films composed of up to 1,764 monolayers of egg albumin, and having observed that such films may be stripped from their metal base, have examined them optically and by X-rays, and measured their thickness by direct mechanical means. The thickness per monolayer is about 9½ A., agreeing with the X-ray patterns and previous indirect estimates, and the structure is one of polypeptide chains lying roughly parallel to the direction of movement of the slide, with the side-chains roughly perpendicular to the surface. They infer that polypeptide chains preexist in the monolayer on the liquid substrate.
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call