L8511

Leupeptin

powder, ≥85% (HPLC)

• Synonim(y): Leupeptin hemisulfate salt, Acetyl-Leu-Leu-Arg-al, N-Acetyl-L-leucyl-L-leucyl-L-argininal hemisulfate salt
• Wzór liniowy: C₂₀H₃₈N₆O₄ · 1/2H₂SO₄
• Numer CAS: 103476-89-7
• Masa cząsteczkowa: 475.59
• Numer MDL: MFCD00037012
• Kod UNSPSC: 12352202
• Identyfikator substancji w PubChem: 24896498
• NACRES: NA.77

Właściwości

• product name: Leupeptin, synthetic, ≥85% (HPLC)
• pochodzenie biologiczne: synthetic
• Poziom jakości: 200
• Próba: ≥85% (HPLC)
• Postać: powder
• rozpuszczalność: H₂O: 50 mg/mL
• temp. przechowywania: −20°C
• ciąg SMILES: 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
• Klucz InChI: CIPMKIHUGVGQTG-VFFZMTJFSA-N

Opis

Zastosowanie

Leupeptin has been used as a protease inhibitor: in ice-cold lysis buffer to harvest cells for western immunoblotting and immunoprecipitation,in chromatin immunoprecipitation (ChIP) lysis buffer for the isolation of fragmented chromatin samples in lysis buffer I to lyse the cells for tandem affinity purification (TAP)

Działania biochem./fizjol.

Inhibitor of serine and cysteine proteases. Inhibits plasmin, trypsin, papain, calpain, and cathepsin B. Does not inhibit pepsin, cathepsins A and D, thrombin, or α-chymotrypsin. Effective concentration 10-100 μM. There have been numerous studies using leupeptin to protect against hearing loss caused by acoustic overstimulation or the ototoxic antibiotic gentamicin. (Loss of cochlear hair cells is believed to be mediated by calpain.)

Leupeptin helps to protect motoneurons from apoptosis. It also helps to enhance muscle function following nerve injury. It possesses neurotrophic action and has a growth-stimulating effect.

Komentarz do analizy

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.

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Informacja o środkach bezpieczeństwa

• Kod klasy składowania: 11 - Combustible Solids
• Klasa zagrożenia wodnego (WGK): WGK 3
• Temperatura zapłonu (°F): Not applicable
• Temperatura zapłonu (°C): Not applicable
• Środki ochrony indywidualnej: Eyeshields, Gloves, type N95 (US)