High‑quality, highly specific recombinant allergens and biological markers are indispensable tools for understanding the molecular mechanisms of allergic diseases, developing accurate diagnostic assays, and advancing novel immunotherapies. Among the many allergenic proteins and immunological markers available today, Aca f 1 , Art si 4 , Art fr 5 , and Argopecten irradians stand out as critical reagents that enable precise identification of IgE‑mediated sensitisation, epitope mapping, and structure‑function studies of allergenic molecules. Produced in E. coli expression systems with >95% purity by SDS‑PAGE, these recombinant proteins offer defined molecular composition, batch‑to‑batch consistency, and His‑tagged formats for convenient purification and detection. Aca f 1 , Art si 4 , Art fr 5 , and Argopecten irradians are now being applied across multiple cutting‑edge research and diagnostic areas, driving breakthroughs from component‑resolved diagnostics to allergen immunotherapy development.
Aca f 1: A Key Marker in Acacia Pollen Allergy Research
Aca f 1 is a major allergenic protein derived from Acacia farnesiana (Needle bush) pollen. Identified as a member of the Ole e 1‑like protein family, Aca f 1 plays important roles in pollen‑induced allergic responses through inhalation exposure. The Ole e 1‑like protein family includes several clinically relevant allergens across diverse plant species, and Aca f 1 exhibits a high degree of amino acid sequence homology with other allergenic members of this family. This structural conservation has significant implications for cross‑reactivity studies, as sensitisation to one member of the family may confer reactivity to others. Recombinant Aca f 1 enables researchers to develop component‑resolved diagnostic assays for acacia pollen allergy, map IgE epitopes, evaluate cross‑reactivity patterns with related pollen allergens, and investigate the efficacy of allergen‑specific immunotherapy candidates targeting acacia pollen sensitisation.
Art si 4: A Versatile Biological Marker for Immunological Research
Art si 4 is a biological marker used extensively in immunological research and diagnostics. It plays important roles in various cellular processes including cell signalling, adhesion, and activation. As a recombinant protein produced in E. coli with a His tag and >95% purity, Art si 4 provides researchers with a well‑characterised, high‑purity reagent for investigating the molecular basis of immune responses. Its utility extends across multiple applications—from ELISA development and Western blotting to antibody screening and functional studies of immune cell behaviour. The His‑tagged format of Art si 4 facilitates convenient purification via immobilised metal affinity chromatography (IMAC) and sensitive detection using anti‑His antibodies, making it an ideal choice for laboratories seeking reproducible and reliable results in immunological research.
Art fr 5: A Biological Marker for Pollen Allergy and Immunological Studies
Art fr 5 is a biological marker used in immunological research and diagnostics. It plays important roles in various cellular processes including cell signalling, adhesion, and activation. Pollen allergens from the Artemisia genus—commonly known as mugwort or wormwood—are among the most important triggers of respiratory allergic diseases worldwide. A cross‑sectional study indicates that approximately 11.3% of patients with respiratory allergic diseases in China are allergic to Artemisia pollen, with this figure significantly higher in northern regions (>50%). Component‑resolved diagnosis (CRD) techniques have been employed to simultaneously measure specific IgE levels against Artemisia allergens and their components. Recombinant Art fr 5 enables researchers to develop component‑resolved diagnostic assays for mugwort pollen allergy, investigate cross‑reactivity patterns with related allergens, and evaluate novel immunotherapeutic strategies.
Argopecten irradians: A Valuable Tool in Shellfish Allergy and Immunological Studies
Argopecten irradians is a biological marker derived from the bay scallop. It plays important roles in various cellular processes including cell signalling, adhesion, and activation. Shellfish allergy is one of the most common and severe food allergies worldwide, affecting both children and adults. Tropomyosin, the major allergenic protein in shellfish, is highly conserved across crustacean and mollusc species, leading to extensive cross‑reactivity. The bay scallop Argopecten irradians has also been the subject of multi‑omics studies to identify key biomarkers of growth‑related traits, further underscoring its value as a research organism. Recombinant Argopecten irradians enables researchers to investigate the molecular basis of shellfish sensitisation, develop component‑resolved diagnostic assays capable of distinguishing genuine from cross‑reactive sensitisation, and evaluate novel immunotherapeutic strategies for shellfish allergy.
Applications in Research and Diagnostics
Recombinant allergens and biological markers such as Aca f 1 , Art si 4 , Art fr 5 , and Argopecten irradians are being applied across a broad spectrum of research and diagnostic applications:
· Component‑resolved diagnostics (CRD) : These recombinant proteins enable the precise identification of sensitisation profiles at the molecular level, distinguishing genuine from cross‑reactive sensitisation and guiding personalised treatment decisions.
· Allergen immunotherapy development: Recombinant allergens provide defined, standardised materials for developing subcutaneous, sublingual, and epicutaneous immunotherapies, as well as for monitoring treatment efficacy.
· Epitope mapping and structural studies: Recombinant allergens enable detailed mapping of B‑cell and T‑cell epitopes, providing insights into allergenicity and cross‑reactivity.
· Immunoassay development: These proteins support the development of sensitive ELISA, chemiluminescent, and lateral flow immunoassays for allergen quantification and IgE detection.
· Basic immunological research: Art si 4 and Art fr 5 serve as tools for studying cell signalling, adhesion, activation, and other fundamental immune processes.
· Food allergy research: Argopecten irradians enables investigation of shellfish allergy mechanisms, cross‑reactivity patterns, and potential therapeutic interventions.
· Pollen allergy research: Aca f 1 supports studies of acacia pollen allergy, while Art fr 5 enables research on mugwort pollen allergy and cross‑reactivity with related allergens.
How to Choose and Buy?
At BOT Bioscience , we are committed to providing premium‑quality recombinant allergens and biological markers to support your cutting‑edge research in allergy, immunology, and diagnostics.
For researchers interested in exploring our allergen product portfolio, BOT Bioscience offers custom protein expression, antibody production, and conjugation services to meet your specific application requirements. Visit our Allergen page to explore the full range of products—from Aca f 1 and Art si 4 to Art fr 5 , Argopecten irradians , and beyond—and request a quote today.