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We report the discovery of a third white dwarf hosting a gaseous debris disc, SDSS J084539.17+225728.0. The typical double-peaked Ca II 8498,8542,8662Å emission lines can be modelled in terms of a Keplerian gas disc with a radial extent from ∼ 0.5R⊙ to ∼ 1.0R⊙. The effective temperature of SDSS 0845+2257, Teff ≃ 18600 ± 500K, is comparable to the two other white dwarfs with gaseous discs, SDSS ...
Complement protein C3 is a 187-kDa (1641-aa) protein that plays a key role in complement activation and immune responses. Its hydrolyzed form, C3(H2O), is responsible for the initiation of the activation of alternative complement pathway. Previous analyses using mAbs, anilinonaphthalenesulfonate dyes, and functional studies have suggested that C3 is conformationally different from C3(H2O). We h...
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