Niemann Pick C1/NPC1 Protein, Human (HEK293, His)

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Based on 1 Customer Validation

The Niemann Pick C1/NPC1 protein is an intracellular cholesterol transporter that cooperates with NPC2 to promote cholesterol efflux from the endosomal/lysosomal compartment. NPC2 transfers unesterified cholesterol to the N-terminal domain of NPC1, where the cholesterol is bound in a hydrophobic pocket. Niemann Pick C1/NPC1 Protein, Human (HEK293, His) is the recombinant human-derived Niemann Pick C1/NPC1 protein, expressed by HEK293 , with N-6*His labeled tag.

For research use only. We do not sell to patients.
  • Species: Human
  • Source: HEK293
  • Storage:
    Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.
  • Biological Activity
  • Technical Parameters
  • Product Properties
  • Documentation
  • Help & FAQs

Biological Activity

Description

The Niemann Pick C1/NPC1 protein is an intracellular cholesterol transporter that cooperates with NPC2 to promote cholesterol efflux from the endosomal/lysosomal compartment. NPC2 transfers unesterified cholesterol to the N-terminal domain of NPC1, where the cholesterol is bound in a hydrophobic pocket. Niemann Pick C1/NPC1 Protein, Human (HEK293, His) is the recombinant human-derived Niemann Pick C1/NPC1 protein, expressed by HEK293 , with N-6*His labeled tag.

Background

The Niemann Pick C1 (NPC1) Protein serves as an intracellular cholesterol transporter, working in tandem with NPC2 to facilitate the egress of cholesterol from the endosomal/lysosomal compartment. Unesterified cholesterol released from LDLs in the late endosomes/lysosomes is transferred by NPC2 to the cholesterol-binding pocket in the N-terminal domain of NPC1. Cholesterol binds to NPC1 with its hydroxyl group buried in the binding pocket, and NPC1 exhibits a higher affinity for oxysterol compared to cholesterol. Beyond cholesterol transport, NPC1 may play a role in vesicular trafficking in glia, crucial for maintaining the structural and functional integrity of nerve terminals. Additionally, NPC1 inhibits cholesterol-mediated mTORC1 activation through its interaction with SLC38A9. In the context of microbial infection, NPC1 acts as an endosomal entry receptor for ebolavirus, highlighting its diverse roles in cellular processes and its significance in health and disease.

MCE Validation Data

  • Purity - SDS-PAGE

    Purity - SDS-PAGE

    ≥ 95%, as determined by reducing SDS-PAGE.

Technical Parameters

  • Species Human
  • Source HEK293
  • Tag N-6*His
  • Accession
  • Gene ID
  • Molecular Construction
    • N-term
    • 6*His
    • NPC1 (R372-F622)
      Accession # O15118-1
    • C-term
  • Protein Length

    Lumenal Domain

  • Synonyms

    NPC1; Truncated Niemann-Pick C1; NPC Intracellular Cholesterol Transporter 1; Niemann-Pick C1; Niemann-Pick C1 Protein; POGZ; SLC65A1; NPC; Niemann-Pick Disease, Type C1

  • AA Sequence

    RVTTNPVDLWSAPSSQARLEKEYFDQHFGPFFRTEQLIIRAPLTDKHIYQPYPSGADVPFGPPLDIQILHQVLDLQIAIENITASYDNETVTLQDICLAPLSPYNTNCTILSVLNYFQNSHSVLDHKKGDDFFVYADYHTHFLYCVRAPASLNDTSLLHDPCLGTFGGPVFPWLVLGGYDDQNYNNATALVITFPVNNYYNDTEKLQRAQAWEKEFINFVKNYKNPNLTISFTAERSIEDELNRESDSDVF

  • Molecular Weight

    Approximately 38-55 kDa, based on SDS-PAGE under reducing conditions, due to the glycosylation.

  • Glycosylation

    Yes

  • Purity

    ≥ 95%, as determined by reducing SDS-PAGE.

Product Properties

Appearance

Lyophilized powder.

Formulation

Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.4.

Endotoxin Level

<1 EU/μg, determined by LAL method.

Reconstitution

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Storage & Stability

Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Shipping

Room temperature in continental US; may vary elsewhere.

Calculators

Reconstitution Calculator

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial) Volume (to add to vial)
=
Mass (in vial) Mass (in vial)
÷
Desired Reconstitution Concentration Desired Reconstitution Concentration
Dilution Calculator

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

Concentration (start) Concentration (start)
×
Volume (start) Volume (start)
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The Specific Activity Calculator Equation
  • Specific Activity (Unit/mg)
  • Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) Specific Activity (Unit/mg)
Unit/mg
= 106 ÷
Biological Activity (ED50) Biological Activity (ED50)
106 ÷
ng/mL
MOQ
Minimum order quantity
100 mg

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