stefin A1L1 Inhibitors
Stefin A1L1 inhibitors are a class of chemical compounds that specifically target and inhibit the activity of Stefin A1L1, a member of the cystatin family of cysteine protease inhibitors. Stefin A1L1, like other proteins in the cystatin family, plays a key role in regulating the activity of cysteine proteases, particularly cathepsins, which are involved in protein degradation, intracellular signaling, apoptosis, and immune responses. By binding to cysteine proteases, Stefin A1L1 acts as a natural inhibitor, controlling the proteolytic activity within cells to maintain cellular homeostasis. Inhibitors of Stefin A1L1 interfere with this regulation by blocking the ability of the protein to bind to and inhibit cysteine proteases, leading to an increase in proteolytic activity and changes in the breakdown of cellular proteins.
The mechanism of action for Stefin A1L1 inhibitors generally involves direct interaction with the protein's active sites or the regions responsible for binding to cysteine proteases. These inhibitors can function by preventing the formation of a complex between Stefin A1L1 and the proteases, leaving the enzymes free to perform their proteolytic functions unchecked. Some inhibitors may induce conformational changes in Stefin A1L1, reducing its affinity for proteases or destabilizing the protein structure, thereby hindering its function. By inhibiting Stefin A1L1, these compounds can disrupt the regulation of protein degradation, potentially affecting various cellular processes dependent on controlled protease activity, such as tissue remodeling, cell death, and immune responses. Research into Stefin A1L1 inhibitors provides valuable insights into the role of protease inhibitors in maintaining cellular balance and controlling protein turnover, highlighting the significance of these regulatory proteins in broader biological systems.
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| Product Name | CAS # | Catalog # | QUANTITY | Price | Citations | RATING |
|---|---|---|---|---|---|---|
E-64 | 66701-25-5 | sc-201276 sc-201276A sc-201276B | 5 mg 25 mg 250 mg | $281.00 $947.00 $1574.00 | 14 | |
E-64 is a potent, irreversible cysteine protease inhibitor that binds covalently to the active site of cysteine proteases, inhibiting their activity. As stefin A1 is a cysteine protease inhibitor itself, E-64 would reduce the proteolytic degradation that stefin A1 normally prevents, thereby indirectly inhibiting its function by overwhelming its inhibitory capacity. | ||||||
Leupeptin hemisulfate | 103476-89-7 | sc-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 | |
Leupeptin is a reversible inhibitor of serine and cysteine proteases. It inhibits the activity of these proteases by forming a stable complex. Although stefin A1 inhibits cysteine proteases, the presence of leupeptin would decrease the demand for stefin A1's activity by inhibiting the proteases stefin A1 targets. | ||||||
Chymostatin | 9076-44-2 | sc-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 | |
Chymostatin is a reversible inhibitor of chymotrypsin-like serine proteases and certain cysteine proteases. It acts by binding to the active site of these enzymes. This inhibitory activity can decrease the workload on stefin A1 by limiting the protease activity that stefin A1 is meant to regulate. | ||||||
Alloxan monohydrate | 2244-11-3 | sc-254940 | 10 g | $54.00 | ||
Alloxan is known to selectively destroy insulin-producing cells in the pancreas. Since insulin degradation is partly mediated by cysteine proteases, which stefin A1 inhibits, alloxan-induced depletion of insulin may reduce the need for stefin A1's inhibitory function. | ||||||
K777 | 233277-99-1 | sc-507382 | 10 mg | $566.00 | ||
K11777 is a potent and selective inhibitor of cysteine proteases. By inhibiting the proteases that stefin A1 is known to regulate, K11777 can indirectly inhibit the functional necessity of stefin A1. | ||||||
Z-FA-FMK | 197855-65-5 | sc-201303 sc-201303A | 1 mg 5 mg | $128.00 $372.00 | 19 | |
Z-FA-FMK is a fluoromethyl ketone-based inhibitor that irreversibly inhibits cysteine proteases by covalently modifying the active site cysteine. This binding reduces the activity of proteases that stefin A1 inhibits, thus reducing the functional necessity for stefin A1. | ||||||
MDL-28170 | 88191-84-8 | sc-201301 sc-201301A sc-201301B sc-201301C | 10 mg 50 mg 100 mg 500 mg | $69.00 $241.00 $447.00 $2195.00 | 20 | |
MDL-28170 is a calpain inhibitor with high potency and selectivity. While calpain is not the direct target of stefin A1, inhibition of calpain can alter the proteolytic balance within the cell, potentially diminishing the role of stefin A1 in regulating cysteine protease activity. | ||||||