METHEMOGLOBIN
\mˈɛθiːmˌɒɡləbˌɪn], \mˈɛθiːmˌɒɡləbˌɪn], \m_ˈɛ_θ_iː_m_ˌɒ_ɡ_l_ə_b_ˌɪ_n]\
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By Willam Alexander Newman Dorland
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A substance formed from oxyhemoglobin in decomposing blood and also by the action of ozone, potassium, ferricyanid, chlorates, nitrates, and certain other agents. Its spectrum contains a peculiar band in the red. In alkali solution, upon reduction it is converted into reduced hemoglobin, which is distinguished by its absorption spectrum. M. is present in the urine in cases of poisoning with arseniuretted hydrogen and chlorates, as well as after serious burns and sometimes in fevers.
By Smith Ely Jelliffe
Word of the day
Dopamine Acetyltransferase
- An enzyme that catalyzes the of groups from acetyl-CoA to arylamines. They have wide specificity for aromatic amines, particularly serotonin, and can also catalyze acetyl transfer between arylamines without CoA. EC 2.3.1.5.