biostudies-literatureUnknown31Gholami SBackground: Betatrophin, a novel secretory protein from liver and fatty tissues, is believed to be involved in lipid and glucose metabolism. However, its precise physiological role remains unclear. Here, we report the cloning, expression, and purification steps of mouse betatrophin in a prokaryotic system, followed by its structural analysis. Methods: Specific cloning primers were used to amplify the coding sequence of mouse liver betatrophin. The product was cloned into pET28 and expressed in E.coli BL21 (DE3) cells. The suitability of the refolding procedure was assessed by determining secondary structures of the initial and refolded proteins using circular dichroism spectroscopy. Results: The polymerase chain reaction resulted in a 549 bp nucleotide sequence, encodiMedical journal of the Islamic Republic of Iran102https://www.ebi.ac.uk/biostudies/studies/S-EPMC6014755biostudies-literatureCloning, expression, and spectral analysis of mouse betatrophin.PMC6014755Gheibi NMokhtarian KGoodarzvand Chegini KFalak RGholami SMohamadi MfalseCloning, expression, and spectral analysis of mouse betatrophin.Background: Betatrophin, a novel secretory protein from liver and fatty tissues, is believed to be involved in lipid and glucose metabolism. However, its precise physiological role remains unclear. Here, we report the cloning, expression, and purification steps of mouse betatrophin in a prokaryotic system, followed by its structural analysis. Methods: Specific cloning primers were used to amplify the coding sequence of mouse liver betatrophin. The product was cloned into pET28 and expressed in E.coli BL21 (DE3) cells. The suitability of the refolding procedure was assessed by determining secondary structures of the initial and refolded proteins using circular dichroism spectroscopy. Results: The polymerase chain reaction resulted in a 549 bp nucleotide sequence, encodi2017-01-01T00:00:00Z20172025-04-19T00:26:29.676Z2019-03-26T23:44:25ZS-EPMC60147552995140310.14196/mjiri.31.102