SUBJECT INDEX 



743 



Protoporphyrin (contd.) 

 synthesis, 56 



in vivo, theory of, 637 

 and uroporphyrin, 595, 637, 638 

 Pseudohematin, 487 

 Pseudohemochrome, 454 (table), 487 



(table) 

 Pseudohemoglobin, 454 (table), 455, 486 

 mechanism of formation, 489 

 similar compounds, 489 

 Pseudoverdoporphyrin, 53 (table), 83 

 Pterins in hemopoiesis, 612, 613 

 Pterobilin, 148 

 Pyrrole body store hypothesis, 537, 556, 



557, 609 

 Pyrromethenes 



bile pigments similar to, 106 (table), 



108, 112 (tal)Ie), 122 

 hydrox'-, 98, 125. 129, 149. See also 



B'Mfvscinx, Mesobilifuscins. 

 metal complexes, 162 

 as precursors of porphyrin synthesis in 



vivo, 634-636, 641-643 

 as resonance structures, 79 

 synthesis, 56-58, 100 (table) 

 Pyrroporphyrin, 53 (table) 



R 



Radical chain theory 



of catalatic action, 439, 442 



of peroxidative action, 436 



of oxidative action, 386 

 Radicals in respiration and photosyn- 

 thesis, 647 

 Resonance in bile pigments, 107, 108, 110, 

 129 



biological importance, 647 



in cytochrome c, 355 



in hemoglobin compounds, 214, 215, 

 234-238 



in porphyrins, 78, 241 



in pyrrole, 78 



in pyrromethenes, 79 

 Resorciiioi melt 



of bilirubin and biliverdin, 97 



of hemin, 61 



of mesobilirubiii, 97, 98 



of spirographis hemin, 63 

 Respiratory enzymes. See also Catalase, 

 Cytochromes, Cytochrome oxidase. 

 Peroxidases, Respiratory ferment. 



anabolism, 627 



catabolism, 568 



in evolution, 651 

 inhibitors, 340, 379 

 kinetics and thermodynamics, 339 

 protein specificity, 338, 652 

 stabilization, 652 

 Thiobacillus hematin enzyme, 652 

 Respiratory ferment, 343, 362, 365, 372, 

 373, 384 ff. See also Cytochromes 

 a„ a.., 03, Cytochrome oxidase. 

 autoxidation of ferrous, 184, 384, 397 

 constitution, 201, 363 

 and cyanide, 190, 200, 362-364 

 inhibitors, 363, .379 

 loading tension, 325 

 .partition constant (CO/Oj). See 



Partition constants. 

 photochemical absorption spectrum, 



18, 185, 340, 343, 362, 366, 373 

 reversible combination with oxygen, 



184, .397, 398 

 specificity, 373 

 Respiratory pigments. See also Chloro- 

 cnwrins, Erythrocruorins, Hemo- 

 globin, Myohemoglobin. 

 adaptation to environment, 324 ff., 

 331, 332, 335, 652 

 in mammalian respiration, 327 ff., 332 

 of myohemoglobin, 330 

 in submammalian respiration, 331 



to low oxygen pressure, 332 

 by variation of heme, 326 

 by variation of protein, 326 

 extracellular, 311, 312 (table) 

 in fetal respiration, 329 

 intracellular, 312, 313 (table) 

 microenvironment, 306, 321, 322, 324, 



326, 328, 329, 330, 653 

 molecular weight, classes, 311 ff., 312 

 (table), 313 (table) 

 biological implication of, 312 

 nomenclature, 308 

 oxygen capacity of bloods, 332 

 store, 330, 335 



transport and CO,-transport, 328, 

 333 

 reaction velocities and function, 334 

 Reticulocytes, 604 

 maturation, 511, 605 

 porphyrin in, 579 

 Rhodohemoglobin, 240 

 Rhodoporphyrin, 53 (tal)le), 83 

 Rubrobilin, 142 



