SPEA Protein, E.coli (His)

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SPEA is a key enzyme in cellular metabolism responsible for the biosynthesis of agmatine from arginine. This catalytic process involves the conversion of arginine to agmatine, thereby forming a complex network of biochemical pathways within the cell. SPEA Protein, E.coli (His) is the recombinant E. coli-derived SPEA protein, expressed by E. coli , with N-His labeled tag.

For research use only. We do not sell to patients.
  • Species: E.coli
  • Source: E. coli
  • 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

SPEA is a key enzyme in cellular metabolism responsible for the biosynthesis of agmatine from arginine. This catalytic process involves the conversion of arginine to agmatine, thereby forming a complex network of biochemical pathways within the cell. SPEA Protein, E.coli (His) is the recombinant E. coli-derived SPEA protein, expressed by E. coli , with N-His labeled tag.

Background

SPEA, also known as agmatine ureohydrolase, is an enzyme that plays a central role in the biosynthesis of agmatine from arginine. Specifically, SPEA catalyzes the conversion of arginine into agmatine, a process crucial in the metabolism of nitrogen-containing compounds. This enzymatic activity is a key step in the arginine catabolic pathway, contributing to the generation of agmatine, a biogenic amine with diverse physiological functions. It has to underscore SPEA's role in the synthesis of agmatine, shedding light on its importance in cellular nitrogen metabolism and the broader implications of agmatine in various biological processes.

Technical Parameters

  • Species E.coli
  • Source E. coli
  • Tag N-His
  • Accession
  • Gene ID
  • Molecular Construction
    • N-term
    • His
    • SPEA (D3-E656)
      Accession # P21170
    • C-term
  • Protein Length

    Partial

  • Synonyms

    Biosynthetic arginine decarboxylase; EC:4.1.1.19; ADC ; speA; Sputcn32_1647

  • AA Sequence

    DDMSMGLPSSAGEHGVLRSMQEVAMSSQEASKMLRTYNIAWWGNNYYDVNELGHISVCPDPDVPEARVDLAQLVKTREAQGQRLPALFCFPQILQHRLRSINAAFKRARESYGYNGDYFLVYPIKVNQHRRVIESLIHSGEPLGLEAGSKAELMAVLAHAGMTRSVIVCNGYKDREYIRLALIGEKMGHKVYLVIEKMSEIAIVLDEAERLNVVPRLGVRARLASQGSGKWQSSGGEKSKFGLAATQVLQLVETLREAGRLDSLQLLHFHLGSQMANIRDIATGVRESARFYVELHKLGVNIQCFDVGGGLGVDYEGTRSQSDCSVNYGLNEYANNIIWAIGDACEENGLPHPTVITESGRAVTAHHTVLVSNIIGVERNEYTVPTAPAEDAPRALQSMWETWQEMHEPGTRRSLREWLHDSQMDLHDIHIGYSSGIFSLQERAWAEQLYLSMCHEVQKQLDPQNRAHRPIIDELQERMADKMYVNFSLFQSMPDAWGIDQLFPVLPLEGLDQVPERRAVLLDITCDSDGAIDHYIDGDGIATTMPMPEYDPENPPMLGFFMVGAYQEILGNMHNLFGDTEAVDVFVFPDGSVEVELSDEGDTVADMLQYVQLDPKTLLTQFRDQVKKTDLDAELQQQFLEEFEAGLYGYTYLE

  • Predicted Molecular Mass

    77.4 kDa

  • Molecular Weight

    Approximately 77 kDa, based on SDS-PAGE under reducing conditions.

  • Purity

    ≥ 90%, as determined by reducing SDS-PAGE.

Product Properties

Appearance

Lyophilized powder.

Formulation

Lyophilized from a 0.22 μm filtered solution of 20 mM Tris-HCl, 0.5 M NaCl, 6% trehalose, pH 8.0.
Note: For SPR assay, please replace the buffer. Primary amine components (e.g., Tris, imidazole) can affect protein-coupled chips.

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.

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