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MRC2

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All listed services and products are For Research Use Only. Do Not use in any diagnostic or therapeutic applications.

Background

Mannose receptor C type 2 (MRC2, also known as uPARAP/Endo180) is a type I transmembrane C-type lectin encoded by the MRC2 gene. It is predominantly expressed in fibroblasts and stromal cells. Its extracellular segment contains a fibronectin type II (FNII) domain responsible for direct collagen binding, plus tandem C-type lectin domains where CTLD2 mediates calcium-dependent recognition of glycosylated collagen fragments. MRC2 mediates endocytic uptake of degraded collagen for lysosomal breakdown, acting as the core scavenger receptor maintaining balanced extracellular matrix turnover after tissue injury. Impaired MRC2-dependent collagen clearance may lead to accumulation of interstitial collagen peptides and progressive fibrotic lesions.

MRC2 separates two independent functional modules to sustain ECM homeostasis: the FNII domain directly interacts with collagen backbones, while calcium-stabilized CTLD2 pockets recognize glycan modifications on cleaved collagen fragments to facilitate intracellular degradation. Unlike macrophage-restricted MRC1, MRC2 dominates stromal collagen clearance. Loss of MRC2 ligand-binding capacity disrupts the balance between matrix synthesis and degradation, decoupling wound repair from excessive fibrous tissue deposition. Reduced MRC2 transcription is detected in multiple organ fibrotic tissues, making MRC2 a valuable research target for wound healing, interstitial collagen metabolism and ECM biological studies.

Fig. 1 Schematic structure of mannose receptor family, including MRC2 (uPARAP/Endo180). The fibronectin type II (FNII) domain binds collagen; CTLD2 performs calcium-dependent glycan recognition, supporting collagen endocytosis and ECM remodeling research. (OA Literature)Fig. 1 Domain architecture of mannose receptor family proteins including uPARAP/Endo180 (MRC2). The FNII domain mediates collagen binding, whereas CTLD2 enables calcium-dependent recognition of glycosylated collagen, triggering ligand internalization for lysosomal degradation.1

MRC2 Protein Function: Core Roles in Collagen Clearance and Extracellular Matrix Homeostasis

The biological functions of MRC2 are focused on calcium-dependent glycan recognition and degraded collagen endocytosis:

  • FNII Domain Collagen Binding: The fibronectin type II domain directly interacts with collagen fragments, serving as the core mechanism for substrate capture.
  • C-Type Lectin Glycan Recognition: Calcium-stabilized C-type lectin pockets recognize glycosylated modifications on collagen substrates.
  • Collagen Clearance Control: Mediates endocytic uptake of matrix breakdown peptides, fine-tuning tissue collagen turnover rates during wound repair.
  • Wound Remodeling Balance: Coordinates matrix synthesis and degradation to prevent excessive fibrous tissue accumulation.
  • Organ Fibrosis Regulation: Limits interstitial collagen aggregate formation under persistent tissue injury.
  • Disease Relevance: Downregulated MRC2 expression contributes to progressive organ fibrotic lesions, making it a core research target for ECM biology.

MRC2 Protein Product

Creative Biolabs offers high-quality MRC2 proteins through optimized heterologous expression systems, including full-length receptor and isolated domain variants covering collagen-binding FNII region and carbohydrate-recognition modules. These products retain native FNII-collagen binding affinity and calcium-dependent glycan recognition activity, suitable for ECM remodeling and fibrotic mechanism research. All MRC2 batches undergo strict quality control to ensure consistent performance and reliable application across diverse stromal cell research platforms.

MRC2 Protein Product

Not finding the membrane protein product you need? Contact us to start your one-stop custom service!

MRC2 Stable Cell Line Product

Creative Biolabs provides custom-engineered MRC2 stable cell lines, including overexpressing and knockdown stromal cell research models. These cell lines are optimized for investigating collagen clearance mechanisms and fibrotic pathway functional research.

MRC2 Stable Cell Line Product

Not finding the stable cell line product you need? Contact us to start your one-stop custom service!

MRC2 Recombinant Antibody Product

High-specificity recombinant antibodies targeting MRC2 are developed via advanced antibody engineering technologies, with no cross-reactivity with MRC1 paralogs. These antibodies are validated for multiple applications, including stromal cell membrane immunofluorescence localization detection, Western blot expression quantification and co-immunoprecipitation analysis of MRC2-collagen complexes, enabling precise characterization of MRC2 expression levels and cell surface distribution under physiological and fibrotic pathological conditions.

MRC2 Recombinant Antibody Product

Not finding the recombinant antibody product you need? Contact us to start your one-stop custom service!

Product Features

  • Native Collagen Glycan Binding Activity: Preserves intact calcium-dependent lectin pockets to faithfully recapitulate interstitial collagen clearance and ECM remodeling cascades.
  • Mannose Receptor Specificity: Validated for selective binding to MRC2 epitopes without cross-reaction to MRC1, supporting high-specificity fibrotic research.
  • ECM Research Compatibility: Optimized for primary fibroblast experimental systems, providing reliable tools for fibrotic mechanism research.
  • Comprehensive Customization Support: Enables end-to-end development of tailored MRC2 proteins, antibodies, and collagen turnover reporter cell lines to meet diversified matrix biology research demands.

Custom MRC2 Research Services

Beyond catalog products, Creative Biolabs offers specialized custom services for MRC2 research:

  • Custom MRC2 Protein Production: Tailored expression of calcium pocket mutant receptors, epitope-tagged constructs and collagen fusion variants.
  • Custom Antibody Development: Generation of MRC2-specific antibodies for stromal cell localization assays and collagen complex detection, as well as endocytosis blocking antibody preparation.
  • Stable Cell Line Engineering: Custom construction of MRC2-modified ECM turnover reporter cell lines with complete collagen clearance functional validation.
  • Functional Assay Development: Design of collagen endocytosis activity assays and fibrosis-related functional screening workflows.

Frequently Asked Questions (FAQ)

  1. What is the primary function of MRC2?

    MRC2 uses its FNII domain to bind collagen fragments, while CTLD2 mediates calcium-dependent recognition of collagen glycans; it mediates lysosomal endocytic degradation to maintain balanced extracellular matrix turnover.

  2. Why is MRC2 a significant research target?

    MRC2 is the primary stromal collagen clearance receptor, and its downregulation triggers progressive organ fibrosis. It is a critical core research target for ECM and fibrotic disease biology.

  3. Are Creative Biolabs' MRC2 products suitable for clinical use?

    No, all MRC2 products and services are strictly for research use only, not intended for clinical diagnosis or treatment.

  4. What types of MRC2 products does Creative Biolabs offer?

    Offerings include full-length MRC2 receptor proteins, high-specificity recombinant antibodies, and custom stable ECM turnover reporter cell lines, supporting comprehensive fibrotic research projects.

  5. How are MRC2 proteins validated for activity?

    MRC2 proteins are validated via separate FNII-collagen binding and CTLD glycan recognition functional assays.

Reference
  1. Gucciardo, Fabrice, et al. "uPARAP/Endo180: a multifaceted protein of mesenchymal cells." Cellular and Molecular Life Sciences 79.5 (2022): 255. Under Open Access license CC BY 4.0, without modification. https://doi.org/10.1007/s00018-022-04249-7
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