2950 (UroS) HemDThalassiosira pseudonana
GO:0004852 GO:0006779 GO:0006783 -
uroporphyrinogen-III synthase activity
Catalysis of the reaction: hydroxymethylbilane = H(2)O + uroporphyrinogen III.
porphyrin-containing compound biosynthetic process
The chemical reactions and pathways resulting in the formation of any member of a large group of derivatives or analogs of porphyrin. Porphyrin consists of a ring of four pyrrole nuclei linked each to the next at their alpha positions through a methine group.
heme biosynthetic process
The chemical reactions and pathways resulting in the formation of heme, any compound of iron complexed in a porphyrin (tetrapyrrole) ring, from less complex precursors.