<prompt> The major function of Major Intrinsic Protein 26 MIP26 isGlucose transport in lensTransport of water in lensDiffusion barrierCapsule of lens  <response>: Major intrinsic protein of the lens belongs to the super .family of aquaporins and is classified as aquaporin 0. MIP 26 or aquaporin 0 is permeable to water water channels and glycerol glycerol channels. It serves two major functions to maintain the transparency of the lensTransport of water across the lensTransport of glycerol across the lensAquaporin 0 or MIP mutations have been postulated to result in the formation of cataracts loss of transparency of lens. 