Close
Loading...
CONTACT US
:
:
:
Call us at:
:
:
:
Fax:
Email:

PTPN1

Products

Loading...

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

Background

Protein tyrosine phosphatase non-receptor type 1 (PTPN1, PTP1B) is a cytoplasmic phosphatase encoded by the PTPN1 gene, highly expressed in hepatic and adipocyte populations, localized to cytoplasmic and ER-adjacent compartments. Distinct from receptor-linked phosphatase paralogs, PTPN1 dephosphorylates tyrosine residues on insulin receptor and downstream signaling intermediates to terminate insulin-dependent metabolic cascades. Under basal metabolic status, moderate PTPN1 activity maintains balanced insulin sensitivity without severe glucose dysregulation. Upon nutrient overload, elevated PTPN1 expression enhances receptor dephosphorylation to blunt glucose uptake and glycogen synthesis signals. Unlike ubiquitous housekeeping phosphatases, PTPN1 bears insulin pathway-specific inhibitory functions that cannot be fully compensated by other cytoplasmic PTP family members, linking tyrosine dephosphorylation directly to glucose metabolic pathways. Loss of functional PTPN1 amplifies insulin responsiveness and improves systemic glucose clearance, while sustained phosphatase activity drives insulin resistance, establishing PTPN1 as a core research target for metabolic phosphatase biology and anti-diabetic compound screening.

PTPN1 executes cytoplasmic tyrosine dephosphorylation function, utilizing conserved catalytic phosphatase pockets to remove phosphate groups from insulin receptor substrates. Conserved substrate recognition sequences exclusively target insulin signaling intermediates, separating its substrate spectrum from growth factor unrelated phosphatase targets. PTPN1-mediated signal termination bridges insulin receptor activation and metabolic effector suppression, balancing peripheral glucose uptake according to circulating insulin concentration. PTPN1 participates in hepatic gluconeogenesis control, adipocyte glucose handling and systemic insulin sensitivity regulation. Deficient PTPN1 expression preserves sustained insulin signal transduction and improves metabolic homeostasis. Therefore, PTPN represents a pivotal research target for metabolic phosphatase study and insulin-sensitizing compound screening.

Fig. 1 CeRNA regulatory network controlling PTPN1 expression in insulin resistant cell model with corresponding molecular validation data. (OA Literature)Fig. 1 CircMAP3K4/miR-6795-5p axis upregulates PTPN1 to suppress IRS1/PI3K/Akt glucose uptake signaling and drive insulin resistance, accompanied by qPCR and western blot quantification of PTPN1 expression.1

PTPN1 Protein Function: Core Roles in Insulin Substrate Dephosphorylation and Metabolic Tuning

The biological functions of PTPN1 are focused on tyrosine phosphate removal, insulin signal attenuation and glucose balance control:

  • Tyrosine Dephosphorylation: Catalyzes phosphate cleavage from activated insulin receptor and IRS substrates.
  • Insulin Signal Termination: Suppresses downstream glucose uptake and glycogen synthesis transcriptional programs.
  • Metabolic Homeostasis Maintenance: Preserves mild insulin resistance under resting nutrient conditions.
  • Glucose Handling Modulation: Governs peripheral insulin responsiveness upon nutritional stimulation.
  • Disease Relevance: PTPN1 overexpression induces insulin resistance, while phosphatase inhibition restores metabolic sensitivity.

PTPN1 Protein Product

Creative Biolabs offers high-quality PTPN1 proteins through optimized expression systems, including full-length cytoplasmic phosphatase and isolated catalytic domain variants. These products retain native tyrosine dephosphorylation biological activity, suitable for insulin substrate interaction assays and insulin-sensitizing modulator screening. All PTPN1 proteins undergo strict quality control to ensure consistent performance and reliable application across diverse research platforms.

PTPN1 Protein Product

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

PTPN1 Stable Cell Line Product

Creative Biolabs provides custom-engineered PTPN1 stable cell lines, including overexpression and blank control models. These cell lines are optimized for cytoplasmic phosphatase profiling and insulin signal functional analysis. Each cell line undergoes stringent validation to ensure stable expression profiles and consistent functional performance in diverse experimental contexts.

PTPN1 Stable Cell Line Product

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

PTPN1 Recombinant Antibody Product

High-specificity recombinant antibodies targeting PTPN1 are developed via advanced antibody engineering technologies. These antibodies are validated for cytoplasmic compartment localization detection and hepatic/adipose tissue expression profiling, and can be combined with insulin receptor detection reagents to analyze complete PTPN1-substrate complexes in metabolic cell models.

PTPN1 Recombinant Antibody Product

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

Product Features

  • Native Tyrosine Dephosphatase Activity: Preserves intact insulin substrate catalytic capacity for metabolic signaling research.
  • PTPN1 Specificity: Eliminates non-specific cross-recognition of unrelated cytoplasmic phosphatases.
  • Metabolic Biology Compatibility: Optimized reagent series for insulin resistance and anti-diabetic therapeutic screening workflows.
  • Comprehensive Customization Support: Facilitates end-to-end development of customized proteins, antibodies and stable cell lines to address phosphatase metabolic research demands.

Custom PTPN1 Research Services

Beyond catalog products, Creative Biolabs offers specialized custom services for PTPN1 research:

  • Custom PTPN1 Protein Production: Tailored expression of mutant and tagged PTPN1 constructs for insulin substrate binding analysis.
  • Custom Antibody Development: Generation of PTPN1-specific antibodies for cytoplasmic immunostaining in metabolic cell populations.
  • Stable Cell Line Engineering: Construction of PTPN1-modified cell models for insulin signaling research.
  • Functional Assay Development: Custom design of tyrosine dephosphorylation and glucose uptake detection workflows.

Frequently Asked Questions (FAQ)

  1. What is the primary function of PTPN1?

    PTPN1 is a cytoplasmic tyrosine phosphatase that dephosphorylates insulin receptor substrates to terminate insulin metabolic signaling.

  2. Why is PTPN1 a significant research target?

    PTPN1 acts as a major negative regulator of insulin response, governing peripheral glucose homeostasis and insulin resistance development.

  3. Are Creative Biolabs' PTPN1 products suitable for clinical use?

    No, all PTPN1 products and services are strictly for research use only, not intended for clinical diagnosis or treatment.

  4. What types of PTPN1 products does Creative Biolabs offer?

    Offerings include full-length PTPN1 phosphatase proteins, isoform-specific detection antibodies and custom stable cell lines for metabolic research.

  5. How are PTPN1 proteins validated for activity?

    PTPN1 proteins are validated via insulin substrate dephosphorylation functional testing.

Reference
  1. Du, Runyu, et al. "circMAP3K4 regulates insulin resistance in trophoblast cells during gestational diabetes mellitus by modulating the miR-6795-5p/PTPN1 axis." Journal of Translational Medicine 20.1 (2022): 180. Under Open Access license CC BY 4.0, without modification. https://doi.org/10.1186/s12967-022-03386-8
Our customer service representatives are available 24 hours a day, 7 days a week. Contact Us
© 2026 Creative Biolabs. | Contact Us
;