Human Desmin

Updated: 2026-09-12

Overview

Human Desmin is a muscle-specific intermediate filament protein that is crucial for maintaining the structural integrity of muscle cells. It is predominantly found in skeletal, cardiac, and smooth muscle tissues, where it forms a network around the Z-discs and connects them to the plasma membrane. Desmin plays a vital role in stabilizing muscle fibers during contraction and relaxation cycles. Mutations in the desmin gene (DES) are associated with a group of disorders known as desminopathies, which include myopathies and cardiomyopathies. Research on Human Desmin is essential for understanding these conditions and developing potential therapeutic interventions. The protein is also used in diagnostic assays to identify muscle-related diseases.

Physical and Chemical Properties

Human Desmin has a molecular weight of approximately 53-55 kDa and is typically supplied as a lyophilized powder. It is soluble in aqueous buffers, making it suitable for various laboratory applications. The protein forms part of the intermediate filament family, which provides mechanical support to cells and tissues. Desmin exhibits high stability under physiological conditions but can degrade if exposed to repeated freeze-thaw cycles or improper storage. Its structural properties enable it to interact with other cytoskeletal proteins, such as actin and tubulin, to maintain cellular architecture. Researchers often use techniques like SDS-PAGE and Western blotting to analyze desmin's purity and integrity.

Main Applications

Human Desmin is primarily used in biomedical research to study muscle cell biology and related pathologies. It serves as a biomarker for diagnosing desmin-related myopathies and cardiomyopathies. Researchers also investigate its role in muscle regeneration and repair processes. In addition to research, desmin is utilized in the development of diagnostic kits and assays. Its presence or absence in tissue samples can indicate muscle damage or disease progression. Pharmaceutical companies may explore desmin as a target for drug development, particularly for treating muscle-wasting disorders.

Safety and Storage

Human Desmin should be handled with care in laboratory settings. Personal protective equipment, such as gloves and lab coats, is recommended to prevent exposure. The protein is not known to be toxic, but standard laboratory safety protocols should be followed. For long-term storage, desmin should be kept at -20°C in a lyophilized form. Reconstituted solutions should be aliquoted to avoid repeated freeze-thaw cycles, which can degrade the protein. Proper labeling and documentation are essential to ensure traceability and prevent cross-contamination.

B2B Procurement Guide

When procuring Human Desmin for research or diagnostic purposes, buyers should prioritize suppliers with a proven track record of quality and reliability. Key factors to consider include purity levels (typically >90% for research-grade), batch-specific data, and compliance with regulatory standards. It is advisable to request certificates of analysis (CoA) and material safety data sheets (MSDS) from vendors. Bulk purchases may qualify for discounts, but buyers should ensure proper storage conditions are maintained during transit. Comparing prices and lead times across multiple suppliers can help optimize procurement efficiency.