IPP1 Antibody

Introduction to IPP1 Antibody

IPP1 Antibody refers to immunological tools targeting the Inhibitor of Protein Phosphatase 1 (IPP-1), also known as PPP1R1A. This protein plays a regulatory role in cellular phosphorylation processes, particularly in glycogen metabolism, signal transduction, and neuronal function . IPP-1 antibodies are widely used in research applications such as western blotting (WB), immunoprecipitation (IP), and immunohistochemistry (IHC) .

Applications in Biomedical Research

IPP1 antibodies are utilized across diverse experimental workflows:

• Western Blotting: Detects endogenous IPP-1 at ~27 kDa .

• Immunohistochemistry (IHC): Validates protein localization in paraffin-embedded tissues .

• Functional Studies: Investigates PP-1 regulation in glycogen metabolism and neuronal signaling .

Critical Controls: Preabsorption with immunizing antigen (e.g., peptide) is recommended to confirm specificity, as monotypic antibodies may exhibit low affinity or cross-reactivity .

Key Research Findings

• Glycogen Metabolism: IPP-1 attenuates glycogen phosphorylase activity, highlighting its role in hormonal regulation of glucose storage .

• Neuronal Function: Phosphorylation at Ser67 by MAPK/CDK kinases modulates IPP-1’s interaction with PP-1 in striatal tissues, influencing NMDA receptor signaling .

• Disease Relevance: Dysregulation of PP-1/IPP-1 interactions is implicated in metabolic disorders and neurodegenerative conditions .

Conflicting Nomenclature and Related Proteins

A nomenclature ambiguity exists between:

• IPP-1 (PPP1R1A): The phosphatase inhibitor described above .

• IPP1 (IDI1): An unrelated peroxisomal enzyme (isopentenyl-diphosphate delta isomerase 1) involved in cholesterol metabolism .

Researchers must verify target specificity using UniProt/Gene IDs to avoid experimental errors.