It is estimated that 20-30% of all genes in most genomes encode for membrane proteins. Lots of the proteins that can be detailed in later chapters will fall into this class of proteins. If mixed with other protein sources, your physique will concentrate on digesting these proteins earlier than muscle restore. Over 90% of the collagen in the human physique is sort I. However, as of 2011, 28 varieties of collagen have been recognized, described, and divided into several teams based on the construction they form. If you want to read more information on accobio.com check out the web site. They’re given this name because, compared to other varieties of amino acids, they have a unique chemical structure that resembles tree branches. The identify collagen comes from the Greek (kólla), which means "glue", and suffix -gen, denoting "producing". N-acetyl cysteine (NAC) comes from the amino acid L-cysteine.