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Access protomer

Two (at least two) states are reversibly accessible to allosteric ohgomers. These states differ by the distribution and/or energy of inter-protomer bonds, and therefore also by the conformational constraints impeded upon... [Pg.257]

Similar results were obtained in Yon s laboratory with aspartate amino transferase from pig heart cytosol, which is a dimer with one PLP bound per subunit. A strong anticooperativity for binding of pyridoxamine phosphate (PMP) was reported (Arrio-Dupont, 1972). In the haloenzyme-apoenzyme hybrid an important decrease of reactivity of Cys 190 (which is entirely accessible in apoenzyme and buried in holoenzyme) also indicated strong coupling between protomers in the enzyme molecule (Cournil, 1975 Cournil and Arrio-Dupont, 1975). Dissociation of the apoenzyme by dilution was... [Pg.491]

See other pages where Access protomer is mentioned: [Pg.367]    [Pg.133]    [Pg.133]    [Pg.367]    [Pg.133]    [Pg.133]    [Pg.53]    [Pg.199]    [Pg.146]    [Pg.54]    [Pg.456]    [Pg.87]    [Pg.367]    [Pg.189]    [Pg.293]    [Pg.133]    [Pg.146]    [Pg.305]    [Pg.525]    [Pg.111]    [Pg.491]   
See also in sourсe #XX -- [ Pg.133 ]



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