PRNP

PRNP (prion protein) is the human gene encoding for the major prion protein PrP (for prion protein), also known as CD230 (cluster of differentiation 230). Expression of the protein is most predominant in the nervous system but occurs in many other tissues throughout the body.1E1G, 1E1J, 1E1P, 1E1S, 1E1U, 1E1W, 1FKC, 1FO7, 1H0L, 1HJM, 1HJN, 1I4M, 1OEH, 1OEI, 1QLX, 1QLZ, 1QM0, 1QM1, 1QM2, 1QM3, 2IV4, 2IV5, 2IV6, 2K1D, 2KUN, 2LBG, 2LEJ, 2LFT, 2LSB, 2LV1, 2OL9, 2W9E, 3HAF, 3HAK, 3HEQ, 3HER, 3HES, 3HJ5, 3HJX, 3MD4, 3MD5, 3NHC, 3NHD, 3NVF, 4DGI, 4E1H, 4E1I,%%s1E1G, 1E1J, 1E1P, 1E1S, 1E1U, 1E1W, 1FKC, 1FO7, 1H0L, 1HJM, 1HJN, 1I4M, 1OEH, 1OEI, 1QLX, 1QLZ, 1QM0, 1QM1, 1QM2, 1QM3, 2IV4, 2IV5, 2IV6, 2K1D, 2KUN, 2LBG, 2LEJ, 2LFT, 2LSB, 2LV1, 2M8T, 2W9E, 3HAF, 3HAK, 3HEQ, 3HER, 3HES, 3HJ5, 3HJX, 3MD4, 3MD5, 3NHC, 3NVF, 4DGI, 4E1H, 4E1I, 4KML, 4N9O562119122ENSG00000171867ENSMUSG00000079037P04156P04925NM_001271561NM_001278256NM_011170NP_898902NP_000302.1NP_001073590.1NP_001073591.1NP_001073592.1NP_898902.1NP_001265185NP_035300The human PRNP gene is located on the short (p) arm of chromosome 20 between the end (terminus) of the arm and position 12, from base pair 4,615,068 to base pair 4,630,233.PrP is highly conserved through mammals, lending credence to application of conclusions from test animals such as mice. Comparison between primates is especially similar, ranging from 92.9-99.6% similarity in amino acid sequences. The human protein structure consists of a globular domain with three α-helices and a two-strand antiparallel β-sheet, an NH2-terminal tail, and a short COOH-terminal tail. A glycophosphatidylinositol (GPI) membrane anchor at the COOH-terminal tethers PrP to cell membranes, and this proves to be integral to the transmission of conformational change; secreted PrP lacking the anchor component is unaffected by the infectious isoform.The strong association to neurodegenerative diseases raises many questions of the function of PrP in the brain. A common approach is using PrP-knockout and transgenic mice to investigate deficiencies and differences. Initial attempts produced two strains of PrP-null mice that shows no physiological or developmental differences when subjected to an array of tests. However, more recent strains have shown significant cognitive abnormalities.More than 20 mutations in the PRNP gene have been identified in people with inherited prion diseases, which include the following:A strong interaction exists between PrP and cochaperone Hsp70/Hsp90 organizing protein/Stress-induced protein 1 (hop (protein)/STI1).