Date published: 2026-4-1

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PRSS33 Inhibitors

PRSS33, or serine protease 33, also known by its alternative name EOS, is a protein that plays an integral role in facilitating serine-type endopeptidase activity. This enzymatic function is crucial for a variety of biological processes, including protein metabolism and cellular signaling. As its name suggests, serine proteases are enzymes that cleave peptide bonds in proteins, where a serine residue at their active site plays a pivotal role in the catalytic mechanism. Found in the cytoplasm, PRSS33 is also implicated in protein kinase C signaling pathways and is a key player in proteolysis, which refers to the breakdown of proteins into smaller polypeptides or amino acids.

The class of PRSS33 inhibitors encompasses a range of chemical compounds specifically designed to target and inhibit the enzymatic activity of PRSS33. These inhibitors function by interacting with the active site of the enzyme or its associated structures, thereby impeding its ability to bind with substrates and carry out its proteolytic functions. Generally, the mode of action for such inhibitors can be either reversible or irreversible. Reversible inhibitors typically bind temporarily to the enzyme, often competing with the substrate for the active site. On the other hand, irreversible inhibitors form covalent bonds with the enzyme, leading to permanent inactivation. The design of these inhibitors often involves mimicking certain aspects of the enzyme's natural substrates, thereby deceiving the enzyme into binding with the inhibitor instead of its intended target. Through such interactions, these inhibitors can effectively modulate the activity of PRSS33, influencing protein metabolism and associated signaling pathways. It's crucial to understand that the specificity and efficacy of these inhibitors can vary, and the breadth of their impact may extend beyond just PRSS33, affecting other enzymes in the serine protease family.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

AEBSF hydrochloride

30827-99-7sc-202041
sc-202041A
sc-202041B
sc-202041C
sc-202041D
sc-202041E
50 mg
100 mg
5 g
10 g
25 g
100 g
$65.00
$122.00
$428.00
$851.00
$1873.00
$4994.00
33
(1)

AEBSF is an irreversible serine protease inhibitor. It covalently binds to the active site of the enzyme, blocking substrate access and inhibiting proteolytic activity. Theoretically, it could inhibit PRSS33 in a similar manner.

Phenylmethylsulfonyl Fluoride

329-98-6sc-3597
sc-3597A
1 g
100 g
$50.00
$697.00
92
(1)

Phenylmethylsulfonyl fluoride (PMSF) is a serine protease inhibitor that acts by covalently modifying the active site serine residue, thereby preventing substrate binding. It might potentially inhibit PRSS33 based on its broad serine protease targeting.

Aprotinin

9087-70-1sc-3595
sc-3595A
sc-3595B
10 mg
100 mg
1 g
$112.00
$408.00
$3000.00
51
(2)

Aprotinin is a polypeptide that acts as a competitive inhibitor by binding to the active sites of serine proteases. Its action suggests it might interact with PRSS33, preventing substrate interaction.

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)

Leupeptin is a reversible inhibitor of serine and cysteine proteases. It binds to the active site, hindering substrate interaction. This mechanism suggests potential inhibition of PRSS33.

Bestatin

58970-76-6sc-202975
10 mg
$131.00
19
(3)

Bestatin is an aminopeptidase inhibitor but can show broader specificity. It inhibits by binding to the enzyme's active site, potentially preventing PRSS33 substrate interaction.

Chymostatin

9076-44-2sc-202541
sc-202541A
sc-202541B
sc-202541C
sc-202541D
5 mg
10 mg
25 mg
50 mg
100 mg
$156.00
$260.00
$640.00
$1186.00
$2270.00
3
(1)

Chymostatin is a broad-spectrum protease inhibitor. By binding to the active site of serine proteases, it can prevent substrate access. This mechanism implies a potential inhibitory effect on PRSS33.

E-64

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

E-64 primarily inhibits cysteine proteases but may affect serine proteases. It irreversibly binds to the active site, potentially affecting PRSS33 function.

Benzamidine

618-39-3sc-233933
10 g
$292.00
1
(0)

Benzamidine is a reversible inhibitor of serine proteases, acting by competing with the substrate. Its mechanism suggests it could inhibit PRSS33 by binding to its active site.

L-Lysine

56-87-1sc-207804
sc-207804A
sc-207804B
25 g
100 g
1 kg
$95.00
$263.00
$529.00
(1)

TLCK is a specific inhibitor of trypsin-like serine proteases. It irreversibly binds to the active site histidine, preventing enzymatic activity. Theoretically, it could affect PRSS33 based on its serine protease targeting.