HEM HEME PROTOPORPHYRIN IX CONTAINING FEIII C34 H32 FE N4 O4 P450 11a1 cholesterol side chain cleaving enzyme for pregnenolone synthesys Back to the tutorial.
The 27 carbon steroid and the four rings of the steroid are labeled A,B,C and D.
The methyl groups labeled 18 and 19 are called angular methyl groups -CH3 and
double bond >C=C< between carbon atoms 5 and 6 and alcohol at carbon 3.
P450 11a1 cholesterol side chain cleaving enzyme at C20-C22 for pregnenolone synthesys.
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