Sentences with phrase «includes haem»
Vitamin B12 is the most complicated of an essential group of bio-pigments which includes haem, the red pigment in haemoglobin, and chlorophyll, the green pigment in plants.
https://www.newscientist.com/ Not exact matches
Some chemists, including Albert Eschenmoser at the University of Zurich, think that molecules based on the corrin ring system of vitamin B12 could be older in evolutionary terms than the porphyrin - based ring systems in haem and chlorophyll.