title: Hexahistidine (6xHis) fusion-based assays for protein-protein interactions.
abstract: Fusion-protein tags provide a useful method to study protein-protein interactions. One widely used fusion tag is hexahistidine (6xHis). This tag has unique advantages over others due to its small size and the relatively low abundance of naturally occurring consecutive histidine repeats. 6xHis tags can interact with immobilized metal cations to provide for the capture of proteins and protein complexes of interest. In this chapter, a description of the benefits and uses of 6xHis-fusion proteins as well as a detailed method for performing a 6xHis-pulldown assay are described.
authors: Department of Pharmacology, Emory University School of Medicine, 1510 Clifton Road, Atlanta, GA, 30322, USA, marycpuckett@gmail.com.
authors: Mary C
authors: MC
authors: Puckett
mesh_terms: D001665:Binding Sites; D002352:Carrier Proteins / Q000737:chemistry; D002846:Chromatography, Affinity; D006639:Histidine / Q000737:chemistry* / Q000235:genetics; D008670:Metals / Q000737:chemistry; D009842:Oligopeptides / Q000737:chemistry* / Q000235:genetics; D011485:Protein Binding; D025941:Protein Interaction Mapping / Q000379:methods*; D060066:Protein Interaction Maps; D011506:Proteins / Q000737:chemistry*
chemical_list: D002352:Carrier Proteins; C471213:His-His-His-His-His-His; D008670:Metals; D009842:Oligopeptides; D011506:Proteins; D006639:Histidine