The surface of bacteria enzyme action

It was shown, by a process of selective poisoning identical in principle with that used on solid catalysts, that the activations occur at specially active patches, and that these patches have specificity, or the power of discriminating between different substrates, through two separate mechanisms the power of a given patch to adsorb different substrates depends on their chemical constitution, so that only a few substances are adsorbed and of those substances which are adsorbed, only a small proportion are activated. 

Further detailed information as to the properties of different patches was obtained (d) by studying the nature of certain poisons, similar in constitution to the substrates themselves. In order to simplify the experi- 

1 Cases might arise, in the sterilization by copper or mercury salts, where this restoring action of hydrogen sulphide would be troublesome. HjS is not usually suspected of being a revivifying agent 1 

Adsorbed on succinic acid centre. HOOC-CH,-COOH HOOCCH2CH2.COOH IIOOC CH 2. CH2 CH2 COOH CJL. CH CHo COOH 

H00C CH2 CH(C00H).CH2 C00H tricarballylic acid HOOC OH(CHb) CH2 COOH pyrotartaric acid 

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