Archive image from page 433 of Currents in biochemical research, 1956;. Currents in biochemical research, 1956; twenty-seven essays charting the present course of biochemical research and considering the intimate relationship of biochemistry to medicine, physiology, and biology currentsinbioche1956gree Year: 1956 ( BARBARA W. LOW AND JOHN T. EDSALL direct stereochemical mechanism for turning the helical axis through 180° in a left-handed helix has been suggested by f 10 Fig. 8a. Photograph of scale models of left-handed and right- handed a-helices. One proline residue has been introduced i
Archive image from page 433 of Currents in biochemical research, 1956;. Currents in biochemical research, 1956; twenty-seven essays charting the present course of biochemical research and considering the intimate relationship of biochemistry to medicine, physiology, and biology currentsinbioche1956gree Year: 1956 ( BARBARA W. LOW AND JOHN T. EDSALL direct stereochemical mechanism for turning the helical axis through 180° in a left-handed helix has been suggested by f 10 Fig. 8a. Photograph of scale models of left-handed and right- handed a-helices. One proline residue has been introduced into each chain configuration. In the left-handed helix the regular chain con- figuration is completely disrupted, as shown. In the right-handed helix some minor discontinuities are introduced with loss of hydrogen bond- ing. (See opposite page for exploded drawings of the regions L and R.) 412
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