Proc Natl Acad Sci U S A. 1951 Apr; 37(4): 205–211.
The Structure of Proteins
Two Hydrogen-Bonded Helical Configurations of the Polypeptide Chain
Gates and Crellin Laboratories of Chemistry, California Institute of Technology, Pasadena, California
†*Present address, Howard University, Washington, D. C.
†Contribution No. 1538.
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