IV. HIOCIIKMICAL SYSTEMS 



235 



TABLE I 

 Summary of the Distribution ok thk Amino Acid Decarboxylase!? 



" The following decarboxylases are alleged to occur in animal tissues: tryptophan,^ cysteic acid,^' *''■'* 

 hj-droxyphenylserine* (but not phenylserine), and phenylalanine.^ However, in the case of the last two 

 enzymes, at least, it is quite possible that these are further reactions of tyrosine decarboxylase (which 

 has been shown to decarboxylate phenylalanine^') or dihydroxyphenj-lalanine decarboxylase. 



^ Indicates whether pyridoxal phosphate has been established as a coenzyme: B = bacteria; P = 

 plant; A = animal. 



* Extensive efforts '■n-" have so far not been fable to demonstrate the involvement of pyridoxal 

 phosphate. 



>i A. W. Rodwell, Biochem. J. 43, 39 (1948). 



'2 !•]. Werle and A. Raub, Biochem. Z. 318, 538 (1948). 



" E. Werle, Biochem. Z. 282, 292 (1936). 



»^ E. Werle and H. Krautzun, Biochem. Z. 296, 315 (1938). 



>» E. Werle and H. Hermann, Biochem. Z. 291, 105 (1937). 



'« P. Iloltz and H. Heise, Arch. Exptl. Pathol. Phannakol. 187, 589 (1937). 



'" P. Holtz, K. Credner, and H. Walter, Z. physiol. Chem. 262, 111 (1939). 



»8 E. Werle and K. Heitzer, Biochem. Z. 299, 420 (1938). 



'9 P. Holtz, R. Heise, and W. Spreyer, Arch. Exptl. Pathol. Pharmakol. 188, 580 



(1938). 

 » E. Werle, Biochem. Z. 311, 270 (1942). 

 2' E. F. Gale, Biochem. J. 34, 846 (1940). 

 " E. F. Gale, Biochem. J. 35, 66 (1941). 

 " H. M. R. Epps, Biochem. J. 38, 242 (1944). 

 2' W. D. Bellamy and I. C. Gunsalus, ./. Bacteriol. 46, 573 (1943). 

 " I. C. Gunsalus and W. D. Bellamy, J. Bacteriol. 47, 413 (1944). 

 " W. D. Bellamy and I. C. Gunsalus, J. Bacteriol. 48, 191 (1944). 

 " I. C. Gunsalus and W. D. Bellamy, J. Biol. Chem. 155, 557 (1944). 

 " I. C. Gunsalus and W. D. Bellamy, J. Biol. Chem. 155, 357 (1944). 

 " W. D. Bellamy and I. C. Gunsalus, J. Bacteriol. 50, 95 (1945). 

 »» E. F. Gale and H. M. R. Epps, Biochem. J. 38, 250 (1944). 



" 1. C. Gunsalus, W. I). Bellamy, and W. W. Uml)reit, ./. Biol. Chem. 155, 685 (1945). 

 « P. Holtz and H. Janisch, Arch. Exptl. Pathol. Pharmakol. 186, 684 (1937). 

 " P. Holtz, Z. physiol. Chem. 251, 226 (1938). 

 ** E. Werle and G. Menniken, Biochem. Z. 291, 325 (1937). 

 « E. F. Gale, Biochem. J. 39, 46 (1945). 

 " J. Baddiley and E. F. Gale, A'a/(/re 155, 727 (1945). 



