Hydroxylation is any chemical process that introduces one or more hydroxyl groups (-OH) into a compound (or radical) thereby oxidising it. In biochemistry, hydroxylation reactions are often facilitated by enzymes called hydroxylases. The most fundamental reactions in chemistry are the redox processes. ... Ribbon diagram of the enzyme TIM, surrounded by the space-filling model of the protein. ...
Hydroxylation in proteins
Proline is the principal residue to be hydroxylated in proteins, which occurs at the Cγ atom, forming hydroxyproline (Hyp), an essential element of collagen, in turn a necessary element of connective tissue. In some cases, proline may be hydroxylated instead on its Cβ atom. Lysine may also be hydroxylated on its Cδ atom, forming hydroxylysine (Hyl). Tropocollagen triple helix. ...
These three reactions are catalyzed by very large, multi-subunit enzymes prolyl 4-hydroxylase, prolyl 3-hydroxylase and lysyl 5-hydroxylase, respectively. These reactions require iron (as well as molecular oxygen and α-ketoglutarate) to carry out the oxidation, and use ascorbic acid (vitamin C) to return the iron to its reduced state. Deprivation of ascorbate leads to deficiencies in proline hydroxylation, which leads to less stable collagen, which can manifest itself as the disease scurvy. Since vitamin C is rich in citrus fruits, British sailors were given limes to combat scurvy on long ocean voyages; hence, they were called "lymies". Scurvy (N.Lat. ...
Categories: Biochemistry stubs | EC 1. ... Tyrosine Hydroxylase is the enzyme responsible for catalysing the conversion of L-tyrosine, an amino acid, to dihydroxyphenylalanine (DOPA), a precursor to Dopamine in the process the body uses to synthesise adrenaline (epinephrin). ...
Hydroxyl Systems, Inc. is an integrated systems provider of environmental technology for advanced wastewater treatment.
Hydroxyl has over ten years of experience providing specialized processes for industrial wastewater treatment, shipboard / marine wastewater treatment, municipal wastewater upgrades and expansions, integrated fixed-film activated sludge, decentralized wastewater treatment and the destruction of biorefractory contaminants from process wastewater and groundwater streams.
Hydroxyl Systems Inc. is a privately held company founded in 1993 with headquarters in Victoria BC, Canada.
The hydroxyl radical, ·OH, is the neutral form of the hydroxide ion.
The Hydroxyl radical is often referred to as the "detergent" of the troposphere because it reacts with many pollutants, often acting as the first step to their removal.
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