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108975

Leupeptin, Hemisulfate, Microbial

Leupeptin hemisulfate, CAS 103476-89-7, is a reversible inhibitor of trypsin-like proteases and cysteine proteases

Synonym(s):

Leupeptin, Hemisulfate, Microbial, Ac-LLR-CHO, ½H2SO4

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$95.10

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$161.00

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About This Item

Empirical Formula (Hill Notation):
C20H38N6O4 · 0.5H2SO4
CAS Number:
103476-89-7
Molecular Weight:
475.59
MDL number:
MFCD00037012
UNSPSC Code:
12352202
NACRES:
NA.77

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Quality Level

200

description

Merck USA index - 14, 5456

assay

≥90% (HPLC)

form

lyophilized solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
desiccated (hygroscopic)

color

white

solubility

water: 50 mg/mL

shipped in

ambient

storage temp.

−20°C

SMILES string

[N+H](=C(N)N)CCC[C@H](NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)C)CC(C)C)CC(C)C)C=O

InChI

1S/C20H38N6O4/c1-12(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/h11-13,15-17H,6-10H2,1-5H3,(H,24,28)(H,25,29)(H,26,30)(H4,21,22,23)/p+1/t15-,16-,17-/m0/s1

InChI key

GDBQQVLCIARPGH-ULQDDVLXSA-O

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This Item
108976L2884L5793
Leupeptin, Hemisulfate, Microbial Leupeptin hemisulfate, CAS 103476-89-7, is a reversible inhibitor of trypsin-like proteases and cysteine proteases

Sigma-Aldrich

108975

Leupeptin, Hemisulfate, Microbial

Leupeptin, Hemisulfate, Synthetic Synthetic version of the microbial-derived inhibitor Leupeptin against trypsin-like and cysteine protease activities.

Sigma-Aldrich

108976

Leupeptin, Hemisulfate, Synthetic

Leupeptin microbial, ≥90% (HPLC)

Sigma-Aldrich

L2884

Leupeptin

Leupeptin BioUltra, microbial, ≥95% (HPLC)

Sigma-Aldrich

L5793

Leupeptin

assay

≥90% (HPLC)

assay

≥95% (sum of isomers, HPLC)

assay

≥90% (HPLC)

assay

≥95% (HPLC)

form

lyophilized solid

form

solid

form

powder

form

powder

Quality Level

200

Quality Level

200

Quality Level

300

Quality Level

200

manufacturer/tradename

Calbiochem®

manufacturer/tradename

Calbiochem®

manufacturer/tradename

-

manufacturer/tradename

-

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

storage condition

OK to freeze, desiccated (hygroscopic)

storage condition

OK to freeze, desiccated (hygroscopic)

storage condition

-

storage condition

-

General description

A reversible inhibitor of trypsin-like proteases and cysteine proteases. Also known to inhibit activation-induced programmed cell death and to restore defective immune response in HIV+ donors. Often used for the inhibition of endoproteinase Lys-C, kallikrein, papain, plasmin, thrombin, cathepsin B, and trypsin. Leupeptin does not inhibit chymotrypsin, elastase, renin, or pepsin. The recommended working range is 10-100 µM for most applications.

Biochem/physiol Actions

Cell permeable: no
Primary Target
trypsin- and cysteine-like proteases
Product does not compete with ATP.
Reversible: yes

Preparation Note

Following reconstitution, aliquot and freeze (-20°C) for long term storage or refrigerate (4°C) for short term storage. Aqueous stock solutions are stable for up to 1 week at 4°C or for up to 1 month at -20°C.

Other Notes

Ac-Leu-Leu-arginal, hemisulfate
Montenez, J.P., et al. 1994. Toxicol. Lett. 73, 201.
Sarin, A., et al. 1994. J. Immunol.153, 862.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Disclaimer

Toxicity: Standard Handling (A)

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Fang Wu et al.
Nature communications, 14(1), 6208-6208 (2023-10-06)
Lysine acetylation has been discovered in thousands of non-histone human proteins, including most metabolic enzymes. Deciphering the functions of acetylation is key to understanding how metabolic cues mediate metabolic enzyme regulation and cellular signaling. Glucose-6-phosphate dehydrogenase (G6PD), the rate-limiting enzyme
John M Barbaro et al.
Journal of leukocyte biology, 112(5), 1317-1328 (2022-10-08)
HIV-associated neurocognitive impairment (HIV-NCI) is a debilitating comorbidity that reduces quality of life in 15-40% of people with HIV (PWH) taking antiretroviral therapy (ART). Opioid use has been shown to increase neurocognitive deficits in PWH. Monocyte-derived macrophages (MDMs) harbor HIV
Joel Vega-Badillo et al.
STAR protocols, 4(2), 102336-102336 (2023-06-04)
Binding affinity quantitatively describes the strength of a molecular interaction and is reported by the equilibrium dissociation constant (KD). Here, we present a protocol to measure KD of mammalian microRNA-loaded Argonaute2 protein by double filter binding. We describe steps for
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The yeast PROPPIN Atg18 folds as a β-propeller with two binding sites for phosphatidylinositol-3-phosphate (PtdIns3P) and PtdIns(3,5)P2 at its circumference. Membrane insertion of an amphipathic loop of Atg18 leads to membrane tubulation and fission. Atg18 has known functions at the
Mohammad Haeri et al.
Methods in molecular biology (Clifton, N.J.), 884, 17-39 (2012-06-13)
Transgenesis, the process of incorporating an exogenous gene (transgene) into an organism's genome, is a widely used tool to develop models of human diseases and to study the function and/or regulation of genes. Generating transgenic Xenopus is rapid and involves
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