ROS1 Protein, Human (Active, sf9, His)

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ROS1 Protein, Human (sf9, His) is the recombinant human-derived ROS1, expressed by Sf9 insect cells , with His labeled tag. ,

For research use only. We do not sell to patients.
  • Species: Human
  • Source: Sf9 insect cells
  • Storage:
    Stored at -80°C for 1 year from date of receipt. It is stable at -20°C for 3 months after opening. It is recommended to freeze aliquots at -80°C for extended storage. Avoid repeated freeze-thaw cycles.
  • Biological Activity
  • Technical Parameters
  • Product Properties
  • Documentation
  • Help & FAQs

Biological Activity

Description

ROS1 Protein, Human (sf9, His) is the recombinant human-derived ROS1, expressed by Sf9 insect cells , with His labeled tag. ,

Background

ROS1 is a receptor tyrosine kinase (RTK) involved in epithelial cell differentiation and regionalization of the proximal epididymal epithelium. NELL2 serves as an endogenous ligand for ROS1. Upon stimulation by NELL2, ROS1 activates intracellular signaling pathways, triggering epididymal epithelial differentiation and subsequent sperm maturation (By similarity). It may activate several downstream signaling pathways related to cell differentiation, proliferation, growth, and survival, including the PI3 kinase-mTOR pathway. ROS1 mediates the phosphorylation of PTPN11, an activator of this pathway. Additionally, it may phosphorylate and activate the transcription factor STAT3 to regulate anchorage-independent cell growth. ROS1 also mediates the phosphorylation and activation of VAV3, a guanine nucleotide exchange factor involved in cell morphology regulation. Other downstream signaling proteins potentially activated by ROS1 include AKT1, MAPK1, MAPK3, IRS1, and PLCG2.

Verified Bioactivity

The activity was measured by off-chip mobility shift assay(MSA). The enzyme was incubated with fluorecence-labeled substrate and Mg(or Mn)/ATP. The phosphorylated and unphosphorylated substrates were separated and detected by MSA device. When the protein concentration is 3.125 nM, the conversion rate is about 23%.

Technical Parameters

  • Species Human
  • Source Sf9 insect cells
  • Tag His
  • Accession
  • Gene ID
  • Protein Length

    Partial

  • Synonyms

    ROS1; Proto-Oncogene C-Ros-1; ROS Proto-Oncogene 1, Receptor Tyrosine Kinase; V-Ros UR2 Sarcoma Virus Oncogene Homolog 1 (Avian); MCF3; ROS Proto-Oncogene 1 , Receptor Tyrosine Kinase; ROS; Transmembrane Tyrosine-Specific Protein Kinase; C-Ros-1; Receptor

  • AA Sequence

    IENLPAFPREKLTLRLLLGSGAFGEVYEGTAVDILGVGSGEIKVAVKTLKKGSTDQEKIEFLKEAHLMSKFNHPNILKQLGVCLLNEPQYIILELMEGGDLLTYLRKARMATFYGPLLTLVDLVDLCVDISKGCVYLERMHFIHRDLAARNCLVSVKDYTSPRIVKIGDFGLARDIYKNDYYRKRGEGLLPVRWMAPESLMDGIFTTQSDVWSFGILIWEILTLGHQPYPAHSNLDVLNYVQTGGRLEPPRNCPDDLWNLMTQCWAQEPDQRPTFHRIQDQLQLFRNFFLNSIYKSRDE

  • Predicted Molecular Mass

    36.3 kDa

  • Molecular Weight

    Approximately 33 kDa, based on SDS-PAGE under reducing conditions.

  • Purity

    ≥ 80%, as determined by reducing SDS-PAGE.

Product Properties

Appearance

Solution

Formulation

Supplied as a 0.22 μm filtered solution of 50 mM HEPES, pH 7.4, 150 mM NaCl, 5% glycerol, 2 mM TCEP.

Endotoxin Level

<1 EU/μg, determined by LAL method.

Reconstitution

Please use rapid thawing with running water to thaw the protein.

Storage & Stability

Stored at -80°C for 1 year from date of receipt. It is stable at -20°C for 3 months after opening. It is recommended to freeze aliquots at -80°C for extended storage. Avoid repeated freeze-thaw cycles.

Shipping

Shipping with dry ice.

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)

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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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