Agitation stabilizer in solid-phase peptide synthesizer

In an automated solid-phase peptide synthesizing apparatus comprising at least one reaction vessel containing an insoluble support matrix for anchoring elongating peptide chains yielded through coupling-assembly formation of peptide bonds, and means for effecting mixing agitation of reagents and circulation agitation of washing solvents introduced in peptide chain coupling-assembly process steps into said reaction vessel through a mouth thereof, wherein an agitating material is forcibly passed through said reagents and washing solvents, via a drainage port provided in said reaction vessel, in order to promote both deprotecting reactions and peptide bond formation in said coupling assembly process, an improvement which comprises:

• a stabilizer removable from said reaction chamber positioned within said reaction vessel such that said stabilizer acts as a barrier for inhibiting extra-vessel escape, due to action of said agitating material, of said reagents and said washing solvents, and of said insoluble support matrix anchoring said peptide chains elongating through said coupling assembly;
• and further for breaking clumping and coagulative skinning of peptide-bound support matrix, due to flocculation effects abetted by action of said agitating material therein and compelled thereby toward the mouth of said reaction vessel during said peptide chain coupling-assembly process;
• and wherein
• said stabilizer is so configured as to avoid interference with the introduction into said reaction vessel of said reagent and said washing solvent through said mouth thereof, and further so as to promote dispersive mixing, of said insoluble support matrix anchoring said elongating peptide chains with said reagents and washing solvents, during said peptide chain coupling-assembly process;
• said reaction vessel defining said reaction chamber being substantially cylindrical;
• said stabilizer being partially formed as an annulus of diameter so corresponding to said reaction chamber as to allow said stabilizer to be concentrically accommodated within said reaction chamber;
• said annulus of said stabilizer being supported by a leg in extension therefrom;
• and
• said annulus also having a baffle leg in extension likewise as but shorter than said support leg, and bent radially inward relative to said annulus, for breaking clumping and coagulative skinning of said peptide-bound support matrix, due to said flocculation effects;
• wherein said baffle leg further promotes dispersive mixing, of said insoluble support matrix anchoring forming peptide chains with said reagents and washing solvents, during said peptide chain coupling assembly.