1dp5

<table><tr><td colspan='2'>[[1dp5]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Atcc_18824 Atcc 18824] and [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DP5 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1DP5 FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>

<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Saccharopepsin Saccharopepsin], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.23.25 3.4.23.25] </span></td></tr>

[[https://www.uniprot.org/uniprot/CARP_YEAST CARP_YEAST]] Aspartyl protease implicated in the post-translational regulation of S.cerevisiae vacuolar proteinases. Acts on YSCB, on YSCY and on itself. [[https://www.uniprot.org/uniprot/IPA3_YEAST IPA3_YEAST]] Specific and potent inhibitor for yeast aspartic protease A (yscA). The proteinase acts as a folding template stabilizing the helical conformation in the inhibitor, which results in the potent and specific blockage of the proteolytic activity.

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== Publication Abstract from PubMed ==

Aspartic proteinase A from yeast is specifically and potently inhibited by a small protein called IA3 from Saccharomyces cerevisiae. Although this inhibitor consists of 68 residues, we show that the inhibitory activity resides within the N-terminal half of the molecule. Structures solved at 2.2 and 1.8 A, respectively, for complexes of proteinase A with full-length IA3 and with a truncated form consisting only of residues 2-34, reveal an unprecedented mode of inhibitor-enzyme interactions. Neither form of the free inhibitor has detectable intrinsic secondary structure in solution. However, upon contact with the enzyme, residues 2-32 become ordered and adopt a near-perfect alpha-helical conformation. Thus, the proteinase acts as a folding template, stabilizing the helical conformation in the inhibitor, which results in the potent and specific blockage of the proteolytic activity.

The aspartic proteinase from Saccharomyces cerevisiae folds its own inhibitor into a helix.,Li M, Phylip LH, Lees WE, Winther JR, Dunn BM, Wlodawer A, Kay J, Gustchina A Nat Struct Biol. 2000 Feb;7(2):113-7. PMID:10655612<ref>PMID:10655612</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 1dp5" style="background-color:#fffaf0;"></div>

*[[Proteinase|Proteinase]]

== References ==

<references/>

[[Category: Atcc 18824]]

[[Category: Dunn, B M]]

[[Category: Guschina, A]]

[[Category: Kay, J]]

[[Category: Lees, W E]]

[[Category: Li, M]]

[[Category: Phylip, H L]]

[[Category: Winther, J R]]

[[Category: Wlodawer, A]]

[[Category: Proteinase some]]