40S ribosomal protein S5 （RPS5） is a ribosomal protein， which is a member of the ribosomal protein S7P family.Ribosomes， which are the organelles that catalyze protein synthesis， composed of a small subunit and a large subunit that comprise of over 80 distinct ribosomal proteins. RPS5 is a 204 amino acid component of the 40S complex. RPS5 proteins exist as multiple processed pseudogenes which are scattered throughout the genome. RPS5 is expressed at varying amounts in colorectal cancer cells， proposing a possible role in carconigenesis.
