Homocysteine-responsive endoplasmic reticulum-resident ubiquitin-like domain member 1 protein is a protein that in humans is encoded by the HERPUD1gene.[5][6][7]
The accumulation of unfolded proteins in the endoplasmic reticulum (ER) triggers the ER stress response. This response includes the inhibition of translation to prevent further accumulation of unfolded proteins, the increased expression of proteins involved in polypeptide folding, known as the unfolded protein response (UPR), and the destruction of misfolded proteins by the ER-associated protein degradation (ERAD) system. This gene may play a role in both UPR and ERAD. Its expression is induced by UPR and it has an ER stress response element in its promoter region while the encoded protein has an N-terminal ubiquitin-like domain which may interact with the ERAD system. This protein has been shown to interact with presenilin proteins and to increase the level of amyloid-beta protein following its overexpression. Alternative splicing of this gene produces multiple transcript variants, some encoding different isoforms. The full-length nature of all transcript variants has not been determined.[7]
^ abKim TY, Kim E, Yoon SK, Yoon JB (May 2008). "Herp enhances ER-associated protein degradation by recruiting ubiquilins". Biochemical and Biophysical Research Communications. 369 (2): 741–6. doi:10.1016/j.bbrc.2008.02.086. PMID18307982.
Further reading
van Laar T, van der Eb AJ, Terleth C (June 2001). "Mif1: a missing link between the unfolded protein response pathway and ER-associated protein degradation?". Current Protein & Peptide Science. 2 (2): 169–90. doi:10.2174/1389203013381189. PMID12370023.
Maruyama K, Sugano S (January 1994). "Oligo-capping: a simple method to replace the cap structure of eukaryotic mRNAs with oligoribonucleotides". Gene. 138 (1–2): 171–4. doi:10.1016/0378-1119(94)90802-8. PMID8125298.
Andersson B, Wentland MA, Ricafrente JY, Liu W, Gibbs RA (April 1996). "A "double adaptor" method for improved shotgun library construction". Analytical Biochemistry. 236 (1): 107–13. doi:10.1006/abio.1996.0138. PMID8619474.
Suzuki Y, Yoshitomo-Nakagawa K, Maruyama K, Suyama A, Sugano S (October 1997). "Construction and characterization of a full length-enriched and a 5'-end-enriched cDNA library". Gene. 200 (1–2): 149–56. doi:10.1016/S0378-1119(97)00411-3. PMID9373149.
Schulze A, Standera S, Buerger E, Kikkert M, van Voorden S, Wiertz E, et al. (December 2005). "The ubiquitin-domain protein HERP forms a complex with components of the endoplasmic reticulum associated degradation pathway". Journal of Molecular Biology. 354 (5): 1021–7. doi:10.1016/j.jmb.2005.10.020. PMID16289116.
Lenz B, Bleich S, Beutler S, Schlierf B, Schwager K, Reulbach U, et al. (December 2006). "Homocysteine regulates expression of Herp by DNA methylation involving the AARE and CREB binding sites". Experimental Cell Research. 312 (20): 4049–55. doi:10.1016/j.yexcr.2006.09.004. PMID17020760.