MKKS also known as BBS6 is a probable chaperone given to the amino acid similarity to the chaperonin family of proteins and may play a role in protein processing in limb, cardiac and reproductive system development. The mutations in BBS6 have been linked to Bardet-Biedl syndrome (BBS) which is a genetically heterogeneous, autosomal recessive disorder characterized by usually severe pigmentary retinopathy, early onset obesity, polydactyly, hypogenitalism, renal malformation and mental retardation. It may also get involved in cellular organization processes, in particular relating to ciliary/flagellar and centrosomal activities.