1mhw

<table><tr><td colspan='2'>[[1mhw]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MHW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1MHW FirstGlance]. <br>

</td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=BP4:BIPHENYL-4-YLACETIC+ACID'>BP4</scene>, <scene name='pdbligand=CSD:3-SULFINOALANINE'>CSD</scene>, <scene name='pdbligand=DAR:D-ARGININE'>DAR</scene>, <scene name='pdbligand=PEA:2-PHENYLETHYLAMINE'>PEA</scene></td></tr>

<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Cathepsin_L Cathepsin L], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.22.15 3.4.22.15] </span></td></tr>

[[https://www.uniprot.org/uniprot/CATL1_HUMAN CATL1_HUMAN]] Important for the overall degradation of proteins in lysosomes.

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== Publication Abstract from PubMed ==

A novel series of noncovalent inhibitors of cathepsin L have been designed to mimic the mode of autoinhibition of procathepsin L. Just like the propeptide, these peptide-based inhibitors have a reverse-binding mode relative to a substrate and span both the S' and S subsites of the enzyme active site. In contrast to previous studies in which even moderate truncation of the full-length propeptide led to rapid reduction in potency, these blocked tripeptide-sized inhibitors maintain nanomolar potency. Moreover, these short peptides show higher selectivity (up to 310-fold) for inhibiting cathepsin L over K versus only 2-fold selectivity of the 96-residue propeptide of cathepsin L. A 1.9 A X-ray crystallographic structure of the complex of cathepsin L with one of the inhibitors confirms the designed reverse-binding mode of the inhibitor as well as its noncovalent nature. Enzymatic analysis also shows the inhibitors to be resistant to hydrolysis at elevated concentrations of the enzyme. The mode of inhibition of these molecules provides a general strategy for inhibiting other cathepsins as well as other proteases.

Design of noncovalent inhibitors of human cathepsin L. From the 96-residue proregion to optimized tripeptides.,Chowdhury SF, Sivaraman J, Wang J, Devanathan G, Lachance P, Qi H, Menard R, Lefebvre J, Konishi Y, Cygler M, Sulea T, Purisima EO J Med Chem. 2002 Nov 21;45(24):5321-9. PMID:12431059<ref>PMID:12431059</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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<div class="pdbe-citations 1mhw" style="background-color:#fffaf0;"></div>

== References ==

<references/>

[[Category: Cathepsin L]]

[[Category: Human]]

[[Category: Chowdhury, S]]

[[Category: Cygler, M]]

[[Category: Devanathan, G]]

[[Category: Konishi, Y]]

[[Category: Lachance, P]]

[[Category: Lefebvre, J]]

[[Category: Menard, R]]

[[Category: Purisima, E O]]

[[Category: Qi, H]]

[[Category: Sivaraman, J]]

[[Category: Sulea, T]]

[[Category: Wang, J]]

[[Category: Hydrolase-hydrolase inhibitor complex]]