A proteinlike polypeptide formed abiotically from amino acid mixtures in the presence of heat, thought to resemble early evolutionary forms of protein.

• 类蛋白质一种类似蛋白质的多肽，由氨基酸混合物受热后以无生命的形式形成，人们认为它类似于蛋白质进化过程中的早期阶段