Peptide Formation in the Presence of Linear or Cyclic Polyphosphates

  title={Peptide Formation in the Presence of Linear or Cyclic Polyphosphates},
  author={Joseph I. Rabinowitz and Jos{\'e} Braulio Everardo Otero Flores and RITA KREBSBACH and George Ernest Rogers},
SEVERAL authors have reported the condensation of amino-acids in aqueous solutions using various “prebiotic” condensing agents, such as cyanamide1–3, cyanoguanidine4 and dicyanamide5. The yields are generally very low (up to 1 or 2 per cent), or are only higher in a pH range which is not believed to be that of primitive oceans (neutral to slightly alkaline)6. 

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