LEU-RO

Leupeptina

powder, from synthetic, =96.5%

• Sinonimo/i: Acetil-Leu-Leu-Arg-al, N-acetil-L-leucilL-leucil-L-arginina
• Formula condensata: C₂₀H₃₈N₆O₄ · 1/2H₂SO₄
• Numero CAS: 103476-89-7
• Peso molecolare: 475.59
• UNSPSC Code: 12352202
• PubChem Substance ID: 329817679
• MDL number: MFCD00037012
• NACRES: NA.54

Proprietà

• biological source: synthetic
• description: Ac-Leu-Leu-argininal x 1/2 H₂SO₄, synthetic
• assay: 96.5%
• form: powder
• mol wt: M_r 475.6
• packaging: pkg of 100 mg (11529048001), pkg of 25 mg (11017128001), pkg of 5 mg (11017101001), pkg of 50 mg (11034626001)
• manufacturer/tradename: Roche
• solubility: H₂O: 50 mg/mL
• shipped in: wet ice
• storage temp.: 2-8°C
• SMILES string: OS(O)(=O)=O.CC(C)C[C@H](NC(C)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C=O.CC(C)C[C@H](NC(C)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C=O
• InChI: 1S/2C20H38N6O4.H2O4S/c2*1-12(2)9-16(24-14(5)28)19(30)26-17(10-13(3)4)18(29)25-15(11-27)7-6-8-23-20(21)22;1-5(2,3)4/h2*11-13,15-17H,6-10H2,1-5H3,(H,24,28)(H,25,29)(H,26,30)(H4,21,22,23);(H2,1,2,3,4)/t2*15-,16-,17-;/m00./s1
• InChI key: CIPMKIHUGVGQTG-VFFZMTJFSA-N

Descrizione

Application

Leupeptin as well as other protease inhibitors like antipain, chymostatin, pepstatin, and phosphoramidon are useful for the protection of proteins during their isolation from tissues or membranes. Leupeptin can be removed from the reaction by dialysis.
Note: To check other protease inhibitors, try our Protease Inhibitor Set including Antipain Dihydrochloride, Aprotinin, Bestatin, Chymostatin, E-64, EDTA-Na₂, Leupeptin, Pefabloc SC, Pepstatin, and Phosphoramidon.

Biochem/physiol Actions

Inibitore delle serina e cisteina proteasi. Inibisce plasmina, tripsina, papaina, calpaina e catepsina B. Non inibisce pepsina, catepsina A e D, trombina o α-chimotripsina. Concentrazione efficace 10-100 μM.

Inibitore delle serina e cisteina proteasi. Inibisce plasmina, tripsina, papaina, calpaina e catepsina B. Non inibisce pepsina, catepsina A e D, trombina o α-chimotripsina. Concentrazione efficace 10-100 μM. Sono stati effettuati numerosi studi con la leupeptina per proteggere dalla perdita dell′udito causata dalla iperstimolazione acustica o dall′antibiotico ototossico gentamicina. (Si ritiene che la perdita delle cellule ciliate della coclea sia mediata dalla calpaina.)

Leupeptin inhibits serine and thiol proteases such as trypsin, plasmin, proteinase K, kallikrein, papain, thrombin, and cathepsin A and B.
Not affected are α-, β-, γ- and δ- chymotrypsin, pepsin, cathepsin D, elastase, renin, and thermolysin.

Features and Benefits

Contents
Synthetic, white powder

Preparation Note

Working concentration: 0.5 to 5 μg/ml (1 to 20 μM)

Comparison of working concentrations of pefabloc with leupeptin and PMSF is in files.

Working solution: Solvent is recommended in distilled water.
Highly soluble in water (1 mg/ml), methanol, ethanol, acetic acid, dimethyl formamide and dimethyl sulfoxide.
Poorly soluble in acetone, chloroform, ethyl ether and n-hexane.

Storage conditions (working solution): -15 to -25 °C
In aqueous solution leupeptin is stable for 1 month at 2 to 8 °C or for at least 6 months at - 15 to -25 °C, stored under nitrogen. For best results, freeze the dissolved inhibitor in aliquots and avoid repeated thawing.

Highly soluble in water (1 mg/ml). Stable for at least one week at 2 to 8 °C and 6 months frozen in aliquots at -15 to -25 °C.

Analysis Note

Function test: Performance controlled with trypsin.

Leupeptin gives multiple peaks on HPLC due to equilibria among three forms in solution. Purity determined using three main peaks. Majority of contaminating peptide is racemized leupeptin.

Other Notes

For life science research only. Not for use in diagnostic procedures.

Informazioni sulla sicurezza

• pictograms: GHS07
• signalword: Warning
• hcodes: H302 + H312 + H332
• pcodes: P261 - P264 - P280 - P302 + P352 + P312 - P304 + P340 + P312 - P501
• Hazard Classifications: Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral
• Classe di stoccaggio: 11 - Combustible Solids
• wgk: WGK 2
• flash_point_f: Not applicable
• flash_point_c: Not applicable