Heme oxygenases 1 and 2 (HO-1, HO-2) cleave the heme molecule, resulting in the production of carbon monoxide (CO) and biliverdin.
HO-1 is a 288 amino acid monooxygenase with a molecular weight of 32 kDa. While HO-2 is constitutively expressed in tissues, HO-1 is
rapidly induced by several stimuli such as lutathione depletion, hemin, heat shock, heavy metals, oxidative stress, oxidized LDL, anoxia, and
endotoxic shock. Similar to nitric oxide (NO), CO activates guanylate cyclase and reduces platelet aggregation. Several conditions that
increase NO also induce HO-1 expression and activity. This suggests that NO synthases, Cox-2, and HO-1 are part of a general defense
mechanism against stress and pathogen invasion.
原厂资料:
注意事项:
1.Since applications vary, each investigator should titrate the reagent to obtain optimal results.
2.Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.