UniProt number O42275 is for Protein Acetylcholinesterase, Organism Electrophorus electricus (Electric eel) (Gymnotus electricus).
C3389
Acetylcholinesterase from Electrophorus electricus (electric eel)
Type VI-S, lyophilized powder, 200-1,000 units/mg protein
Synonym(s):
AChE, Acetylcholine acetylhydrolase, Cholinesterase, Acetyl
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500 UNITS
$97.90
2000 UNITS
$260.00
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500 UNITS
$97.90
2000 UNITS
$260.00
10000 UNITS
$844.55
About This Item
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type
Type VI-S
Quality Level
form
lyophilized powder
specific activity
200-1,000 units/mg protein
mol wt
280 kDa
composition
Protein, ≥45% biuret
solubility
20 mM Tris HCl buffer, pH 7.5: soluble 1.0 mg/mL, clear(lit.)
application(s)
diagnostic assay manufacturing
storage temp.
−20°C
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General description
Molecular Weight: 280 kDa
Isoelectric Point: 5.5
Extinction Coefficient: E1% = 18.0 (280 nm)
Acetylcholinesterase from Electrophorus electricus is a tetramer composed of 4 equal subunits of 70 kDa each. Each subunit contains one active site. The enzyme is a glycoprotein containing hexosamines.
Isoelectric Point: 5.5
Extinction Coefficient: E1% = 18.0 (280 nm)
Acetylcholinesterase from Electrophorus electricus is a tetramer composed of 4 equal subunits of 70 kDa each. Each subunit contains one active site. The enzyme is a glycoprotein containing hexosamines.
Application
Biochem/physiol Actions
Major degradative enzyme for acetylcholine in vivo. Converts acetylcholine + H2O to choline + acetic acid.
Unit Definition
One unit will hydrolyze 1.0 μmole of acetylcholine to choline and acetate per min at pH 8.0 at 37 °C.
Physical form
Lyophilized powder containing Tris buffer salts
Preparation Note
This enzyme dissolves in 20 mM Tris-HCl buffer, pH 7.5 at 1 mg/mL concentration, yielding a clear solution.
Analysis Note
The activity obtained using acetylcholine as substrate is 30-100 times that obtained with butyrylcholine, using acetylcholinesterase from electric eel.
Storage Class
11 - Combustible Solids
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Could you please provide the Uniprot accession number for this product? Also, in general, it would be very helpful if this information were included for any items in your catalog that are proteins. Thanks!
1 answer-
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The bottle mentions the concentration as 200-1000 U/mg. What exact concentration should we consider for calculation purposes?
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The exact concentration is listed on the lot specific Certificate of Analysis. Please see the sample certificate of analysis: https://www.sigmaaldrich.com/certificates/COFA/C3/C3389/C3389-BULK________SLCJ8803__.pdf
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