Metalloreductase STEAP1
Metalloreductase STEAP1 (102-116) is a synthetic peptide fragment corresponding to amino acids 102 through 116 of the human STEAP1 protein, a member of the six-transmembrane epithelial antigen of the prostate (STEAP) family. This peptide segment is derived from a region implicated in the redox activity of STEAP1, which is known to function as a metalloreductase involved in iron and copper metabolism at the cellular membrane. Researchers utilize this defined peptide to investigate the structural and functional domains of STEAP1, particularly in the context of its role in metal ion homeostasis, intercellular communication, and redox biology. As a research tool, Metalloreductase STEAP1 (102-116) supports detailed studies into peptide-protein interactions, domain mapping, and the biochemical pathways regulated by STEAP family proteins.
Peptide mapping: Metalloreductase STEAP1 (102-116) serves as a valuable standard for peptide mapping and epitope identification studies. By synthesizing and employing this specific sequence, researchers can delineate antibody recognition sites or interaction motifs within the STEAP1 protein. This application is particularly relevant for mapping functional domains involved in metal ion reduction and for generating monoclonal antibodies targeting defined regions of STEAP1, which is essential for both basic research and the development of analytical assays.
Protein interaction studies: The peptide is commonly used in binding assays to elucidate protein-protein or protein-peptide interactions involving STEAP1. By providing a discrete, biochemically relevant fragment, it enables the characterization of molecular partners that associate with the 102-116 region, facilitating the identification of binding motifs and structural determinants critical for STEAP1's metalloreductase activity. Such studies help clarify the mechanisms underlying cellular metal transport and redox regulation.
Structure-function analysis: Metalloreductase STEAP1 (102-116) is instrumental in dissecting the relationship between primary sequence and functional activity within the STEAP1 protein. Through mutagenesis, substitution, or truncation of this peptide segment, researchers can systematically analyze the contribution of individual residues to the overall redox function and membrane localization of STEAP1. This approach aids in pinpointing amino acids essential for enzymatic activity, supporting the rational design of functional studies and peptide-based probes.
Biochemical assay development: The defined sequence of STEAP1 (102-116) allows for the creation of synthetic substrates or competitive inhibitors in in vitro assays designed to measure metalloreductase activity. By incorporating this peptide into assay platforms, scientists can quantify enzyme kinetics, evaluate substrate specificity, and screen for small molecules that modulate STEAP1 function. This contributes to the development of robust analytical tools for studying metal ion metabolism and redox processes in cellular systems.
Antigen design for immunological applications: The STEAP1 (102-116) peptide is frequently employed as an immunogen or antigenic probe in the production and validation of antibodies specific to the STEAP1 protein. Its use enables the generation of highly specific polyclonal or monoclonal antibodies for research applications such as Western blotting, immunoprecipitation, and immunofluorescence. This enhances the ability to detect, localize, and quantify STEAP1 expression in various biological samples, thereby supporting studies into the molecular physiology and pathology associated with STEAP family proteins.
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