Electrolytes in biological systems, incorporating papers presented at a symposium at the Marine Biological Laboratory in Woods Hole, Massachusetts, on September 8, 1954 electrolytesinbi00shan Year: 1955 24 ELECTROLYTES IN BIOLOGICAL SYSTEMS evidence is obtained for the penetration of the compound. C'--glutamic acid suppresses incorporation of C^'* from C^'*-glucose into the glutamic acid of the protein whereas C^''-glutamic acid, used to supplement the normal nonradio- active medium, is found in the cell proteins with the same specific radioactivity (±io) as the exogenous compound. A mixture
Electrolytes in biological systems, incorporating papers presented at a symposium at the Marine Biological Laboratory in Woods Hole, Massachusetts, on September 8, 1954 electrolytesinbi00shan Year: 1955 24 ELECTROLYTES IN BIOLOGICAL SYSTEMS evidence is obtained for the penetration of the compound. C'--glutamic acid suppresses incorporation of C^'* from C^'*-glucose into the glutamic acid of the protein whereas C^''-glutamic acid, used to supplement the normal nonradio- active medium, is found in the cell proteins with the same specific radioactivity (±io) as the exogenous compound. A mixture of S^*- and 2-C'''-methionine added to the medium results in the incorporation of both labeled atoms in the cell proteins (8) with the same specific radioactivities as the original mixture. Furthermore, it has been shown (31) by using C'^ in the methyl group that in E. coll the same specific radio- activity is found in the protein methionine as in the exogenous methionine.
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