RBP4 Protein

RBP4 Protein

  • Name
  • Description
  • Cat#
  • Pricings
  • Quantity
  • RBP4 Protein

  • Retinol Binding Protein-4 Human
  • CYT-1218
  • Shipped at Room temp.

Catalogue number



Retinol Binding Protein 4, RBP-4, RBP4, Plasma retinol-binding protein, PRBP, RBP.


RBP4 Human produced in Pooled human plasma can be used as a calibrator in immunoassays. Immunoreactivity was checked using monoclonal antibodies specific to RBP4.


Human Plasma.

Physical Appearance

Sterile Filtered White lyophilized (freeze-dried) powder.


RBP4 was lyophilized from PBS, 150mM NaCl, and 10mM K-phosphate, pH 7.4.


Lyophilized Retinol Binding Protein-4 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution RBP4 should be stored at 4°C between 2-7 days and for future use below -18°C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).

Please prevent freeze-thaw cycles.


It is recommended to reconstitute the lyophilized RBP4 in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

Safety Data Sheet


Greater than 95.0% as determined by SDS-PAGE.


Prospec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.


Retinol Binding Protein 4 (RBP4) is a multifunctional protein that plays a crucial role in the transport of retinol (vitamin A) in the bloodstream. Beyond its traditional role in vitamin A metabolism, RBP4 has emerged as a key player in various physiological processes and pathological conditions. This research endeavors to explore the diverse facets of RBP4 in human biology, shedding light on its physiological functions, regulatory mechanisms, and implications in health and disease.

Physiological Functions:

At its core, RBP4 acts as a carrier protein, shuttling retinol from the liver, where it is stored, to peripheral tissues where it is utilized. Retinol is vital for vision, immune function, growth, and development, making RBP4 an essential component in these processes. By regulating the availability of retinol, RBP4 contributes significantly to maintaining normal vision, immune responses, and cellular differentiation, particularly in epithelial tissues.

Metabolic Significance:

Research has unveiled RBP4’s role in metabolic regulation. It has been associated with insulin resistance, a hallmark of type 2 diabetes mellitus. Elevated RBP4 levels are observed in individuals with obesity and insulin resistance, implicating its involvement in metabolic disorders. Understanding the interplay between RBP4, insulin signaling, and glucose metabolism is crucial for deciphering the complexities of diabetes and metabolic syndrome.

Immunological Implications:

Beyond its metabolic functions, RBP4 has been implicated in immune responses. Studies have suggested its involvement in modulating inflammatory processes and immune cell functions. By influencing immune cell differentiation and cytokine production, RBP4 may play a role in both immune defense and autoimmune disorders. Investigating these immunological implications provides insights into the crosstalk between metabolic and immune pathways.

Genetic and Environmental Influences:

Genetic variations and environmental factors, such as diet and lifestyle, can impact RBP4 levels and functions. Research into these influences is essential for understanding individual susceptibility to metabolic disorders and inflammatory conditions. Genetic studies shed light on the hereditary aspects of RBP4 regulation, providing valuable information for personalized medicine approaches.

Clinical Relevance:

RBP4’s involvement in various diseases, including diabetes, cardiovascular diseases, and certain cancers, underscores its clinical relevance. It serves as a potential biomarker for metabolic dysregulation and a target for therapeutic interventions. Moreover, RBP4-targeted therapies are being explored for their potential in managing metabolic disorders and related complications.


RBP4, once primarily recognized for its role in vitamin A transport, has evolved into a multifaceted protein with intricate roles in metabolism, immunity, and disease. Its functions extend far beyond being a mere carrier of retinol, influencing diverse physiological processes and serving as a nexus between metabolic health and immunological responses. Unraveling the complexities of RBP4 opens avenues for understanding diseases like diabetes and offers promising prospects for innovative therapies, emphasizing its significance in human biology and medicine.


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