Everything you could think on bone structure, kinesiology -- pepsin breaks down proteins into smaller protein.

你能想到的所有关于骨骼结构、运动学——胃蛋白酶把蛋白质分解成更小的蛋白质。

The complement system is a family of small proteins that work in an enzymatic cascade to fight off bacterial infections.

补体系统是一群小的蛋白质，以酶促级联的方式抵抗细菌感染。

Red blood cells are too big to fit through capillary pores, but small proteins like albumin and fluid can make it through.

红细胞太大以至于不能通过毛细血管孔，但是，白蛋白这样的小蛋白质和液体能够透过。

And depending on the source of carbon they start with and environmental factors like temperature and light intensity, they can make a wide variety of products, including small proteins and even a type of biodegradable polyester!

根据它们最初的碳来源和环境因素，如温度和光照强度，它们可以制造各种各样的产品，包括小蛋白质，甚至是一种可生物降解的聚酯！