View source for 1apt


==CRYSTALLOGRAPHIC ANALYSIS OF A PEPSTATIN ANALOGUE BINDING TO THE ASPARTYL PROTEINASE PENICILLOPEPSIN AT 1.8 ANGSTROMS RESOLUTION==
<StructureSection load='1apt' size='340' side='right'caption='[[1apt]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1apt]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Penicillium_janthinellum Penicillium janthinellum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1APT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1APT FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.8&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=IVA:ISOVALERIC+ACID'>IVA</scene>, <scene name='pdbligand=LTA:4,8-DIAMINO-3-HYDROXY-OCTANOIC+ACID+ETHYL+ESTER'>LTA</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1apt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1apt OCA], [https://pdbe.org/1apt PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1apt RCSB], [https://www.ebi.ac.uk/pdbsum/1apt PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1apt ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/PEPA1_PENJA PEPA1_PENJA] Secreted aspartic endopeptidase that allows assimilation of proteinaceous substrates. The scissile peptide bond is attacked by a nucleophilic water molecule activated by two aspartic residues in the active site. Shows a broad primary substrate specificity. Favors hydrophobic residues at the P1 and P1' positions, but can also activate trypsinogen and hydrolyze the B chain of insulin between positions 'Gly-20' and 'Glu-21'.<ref>PMID:4946839</ref> 
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ap/1apt_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1apt ConSurf].
<div style="clear:both"></div>

==See Also==
*[[Penicillopepsin|Penicillopepsin]]
*[[Pepsin|Pepsin]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Penicillium janthinellum]]
[[Category: James MNG]]
[[Category: Sielecki AR]]