Date published: 2026-4-1

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cathepsin Q Inhibitors

Cathepsin Q, predicted to play a crucial role in collagen and fibronectin binding activities, as well as in processes such as collagen catabolic activities and viral entry into host cells, is a lysosomal cysteine protease with wide-ranging functions. To understand the inhibitors of cathepsin Q, we explore a variety of direct and indirect compounds that modulate its proteolytic activity and influence associated cellular processes. Direct inhibitors like E-64, Leupeptin, CA-074, Odanacatib, Z-FA-FMK, Cathepsin Inhibitor 1, II, and III specifically target cathepsin Q's proteolytic activity. By disrupting collagen and fibronectin binding activities, these inhibitors impact processes such as collagen catabolic activities and viral entry into host cells. They alter lysosomal and extracellular space functions, potentially influencing cellular processes crucial for viral infections and extracellular matrix interactions.

Indirect inhibitors like FYDM-MA, NSC 687852, Wortmannin, and U0126 modulate cathepsin Q activity through interference with signaling pathways such as mTOR, JNK, PI3K/Akt, and MAPK/ERK, respectively. These compounds influence collagen catabolic processes, serpin family protein binding, and fibronectin binding activities. By altering lysosomal and extracellular space functions, these indirect inhibitors provide insights into potential regulatory mechanisms of cathepsin Q within cellular signaling pathways. In conclusion, cathepsin Q inhibitors form a diverse class of compounds that target its proteolytic activity and associated cellular functions.

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

E-64

66701-25-5sc-201276
sc-201276A
sc-201276B
5 mg
25 mg
250 mg
$281.00
$947.00
$1574.00
14
(0)

Direct inhibitor of cathepsin Q, targeting its proteolytic activity. Disrupts collagen and fibronectin binding activities, impacting processes like collagen catabolic activities and viral entry into host cells. Influences lysosomal and extracellular space functions.

Leupeptin hemisulfate

103476-89-7sc-295358
sc-295358A
sc-295358D
sc-295358E
sc-295358B
sc-295358C
5 mg
25 mg
50 mg
100 mg
500 mg
10 mg
$73.00
$148.00
$316.00
$499.00
$1427.00
$101.00
19
(3)

Direct inhibitor of cathepsin Q, inhibiting its proteolytic activity. Modulates collagen catabolic processes and serpin family protein binding activity. Alters lysosomal and extracellular space functions, potentially influencing viral entry into host cells.

CA-074

134448-10-5sc-202513
1 mg
$321.00
(0)

Direct inhibitor targeting cathepsin Q, specifically inhibiting its proteolytic activity. Disrupts fibronectin binding and collagen catabolic processes. Alters lysosomal and extracellular space functions, potentially impacting processes like viral entry into host cells.

Odanacatib

603139-19-1sc-364675
sc-364675A
sc-364675B
5 mg
25 mg
250 mg
$218.00
$993.00
$1982.00
2
(1)

Direct inhibitor of cathepsin Q, modulating its proteolytic activity. Influences collagen catabolic processes and serpin family protein binding activity. Alters lysosomal and extracellular space functions, potentially impacting processes like viral entry into host cells.

Z-FA-FMK

197855-65-5sc-201303
sc-201303A
1 mg
5 mg
$128.00
$372.00
19
(1)

Direct inhibitor targeting cathepsin Q, specifically inhibiting its proteolytic activity. Disrupts serpin family protein binding and fibronectin binding activities. Alters lysosomal and extracellular space functions, potentially influencing processes like viral entry into host cells.

Calpeptin

117591-20-5sc-202516
sc-202516A
10 mg
50 mg
$121.00
$456.00
28
(1)

Indirect inhibitor of cathepsin Q, influencing its activity through interference with the mTOR signaling pathway. Modulates collagen catabolic processes and serpin family protein binding. Alters lysosomal and extracellular space functions, potentially impacting processes like viral entry into host cells.

Ceftriaxone, Disodium Salt, Hemiheptahydrate

104376-79-6sc-211050
sc-211050A
1 g
5 g
$179.00
$449.00
1
(1)

Indirect inhibitor of cathepsin Q, impacting its activity through modulation of the JNK signaling pathway. Alters fibronectin binding and collagen catabolic processes. Influences lysosomal and extracellular space functions, potentially affecting processes like viral entry into host cells.

Wortmannin

19545-26-7sc-3505
sc-3505A
sc-3505B
1 mg
5 mg
20 mg
$67.00
$223.00
$425.00
97
(3)

Indirect inhibitor of cathepsin Q, influencing its activity through the PI3K/Akt signaling pathway. Alters serpin family protein binding and collagen catabolic processes. Modulates lysosomal and extracellular space functions, potentially impacting processes like viral entry into host cells.