superoxide

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superoxide

 [soo″per-ok´sīd]
any compound containing the highly reactive superoxide ion O2, a common intermediate in numerous biological oxidations.

su·per·ox·ide

(sū'pĕr-oks'īd),
An oxygen free radical, O2-, which is toxic to cells.

superoxide

/su·per·ox·ide/ (-ok´sīd) any compound containing the highly reactive and extremely toxic oxygen radical O2−, a common intermediate in numerous biological oxidations.

superoxide

[-ok′sīd]
a common reactive form of oxygen that is formed when molecular oxygen gains a single electron. Superoxide radicals can attack susceptible biological targets, including lipids, proteins, and nucleic acids.

su·per·ox·ide

(sū'pĕr-oks'īd)
An oxygen free radical, O2-. which is toxic to cells.

superoxide

any compound containing the highly reactive superoxide ion O2, a common intermediate in numerous biological oxidations and an important killing mechanism generated in lysosomes of phagocytes after they have phagocytosed microorganisms.

superoxide dismutase
an enzyme that converts peroxides to two kinds of molecules in different states of oxidation. Present in aerobic bacteria.
References in periodicals archive ?
They theorized that a chemical agent, superoxide radical ions, could arise and destroy organics on Mars.
observed that superoxide radicals form on the mineral surfaces under these conditions, they report in the Sept.
They started their work with fruit flies that lack mitochondrial superoxide dismutase enzyme (SOD), which provides the primary line of defence against ROS by capturing the superoxides and converting them to water.
In all four patients the phagocytes' ability to produce superoxides and to kill bacteria increased, reaching normal levels in two patients, and remained raised for more than two weeks.
CGD patients cannot produce superoxide anions, molecular fragments responsible for killing bacteria, fungi and other intruders.