View source for 2cmy

==CRYSTAL COMPLEX BETWEEN BOVINE TRYPSIN AND VERONICA HEDERIFOLIA TRYPSIN INHIBITOR==
<StructureSection load='2cmy' size='340' side='right' caption='[[2cmy]], [[Resolution|resolution]] 2.25&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2cmy]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus] and [http://en.wikipedia.org/wiki/Veronica_hederifolia Veronica hederifolia]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2CMY OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2CMY FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1aq7|1aq7]], [[1auj|1auj]], [[1az8|1az8]], [[1bju|1bju]], [[1bjv|1bjv]], [[1btp|1btp]], [[1btw|1btw]], [[1btx|1btx]], [[1bty|1bty]], [[1btz|1btz]], [[1c1n|1c1n]], [[1c1o|1c1o]], [[1c1p|1c1p]], [[1c1q|1c1q]], [[1c1r|1c1r]], [[1c1s|1c1s]], [[1c1t|1c1t]], [[1c2d|1c2d]], [[1c2e|1c2e]], [[1c2f|1c2f]], [[1c2g|1c2g]], [[1c2h|1c2h]], [[1c2i|1c2i]], [[1c2j|1c2j]], [[1c2k|1c2k]], [[1c2l|1c2l]], [[1c2m|1c2m]], [[1c5p|1c5p]], [[1c5q|1c5q]], [[1c5r|1c5r]], [[1c5s|1c5s]], [[1c5t|1c5t]], [[1c5u|1c5u]], [[1c5v|1c5v]], [[1c9t|1c9t]], [[1ce5|1ce5]], [[1cu7|1cu7]], [[1cu8|1cu8]], [[1cu9|1cu9]], [[1d6r|1d6r]], [[1eb2|1eb2]], [[1ejm|1ejm]], [[1ezx|1ezx]], [[1f0t|1f0t]], [[1f0u|1f0u]], [[1f2s|1f2s]], [[1g36|1g36]], [[1g3b|1g3b]], [[1g3c|1g3c]], [[1g3d|1g3d]], [[1g3e|1g3e]], [[1g9i|1g9i]], [[1gbt|1gbt]], [[1ghz|1ghz]], [[1gi0|1gi0]], [[1gi1|1gi1]], [[1gi2|1gi2]], [[1gi3|1gi3]], [[1gi4|1gi4]], [[1gi5|1gi5]], [[1gi6|1gi6]], [[1gj6|1gj6]], [[1hj9|1hj9]], [[1j8a|1j8a]], [[1jir|1jir]], [[1jrs|1jrs]], [[1jrt|1jrt]], [[1k1i|1k1i]], [[1k1j|1k1j]], [[1k1l|1k1l]], [[1k1m|1k1m]], [[1k1n|1k1n]], [[1k1o|1k1o]], [[1k1p|1k1p]], [[1lqe|1lqe]], [[1max|1max]], [[1may|1may]], [[1mts|1mts]], [[1mtu|1mtu]], [[1mtv|1mtv]], [[1mtw|1mtw]], [[1n6x|1n6x]], [[1n6y|1n6y]], [[1nc6|1nc6]], [[1ntp|1ntp]], [[1o2h|1o2h]], [[1o2i|1o2i]], [[1o2j|1o2j]], [[1o2k|1o2k]], [[1o2l|1o2l]], [[1o2m|1o2m]], [[1o2n|1o2n]], [[1o2o|1o2o]], [[1o2p|1o2p]], [[1o2q|1o2q]], [[1o2r|1o2r]], [[1o2s|1o2s]], [[1o2t|1o2t]], [[1o2u|1o2u]], [[1o2v|1o2v]], [[1o2w|1o2w]], [[1o2x|1o2x]], [[1o2y|1o2y]], [[1o2z|1o2z]], [[1o30|1o30]], [[1o31|1o31]], [[1o32|1o32]], [[1o33|1o33]], [[1o34|1o34]], [[1o35|1o35]], [[1o36|1o36]], [[1o37|1o37]], [[1o38|1o38]], [[1o39|1o39]], [[1o3a|1o3a]], [[1o3b|1o3b]], [[1o3c|1o3c]], [[1o3d|1o3d]], [[1o3e|1o3e]], [[1o3f|1o3f]], [[1o3g|1o3g]], [[1o3h|1o3h]], [[1o3i|1o3i]], [[1o3j|1o3j]], [[1o3k|1o3k]], [[1o3l|1o3l]], [[1o3m|1o3m]], [[1o3n|1o3n]], [[1o3o|1o3o]], [[1oph|1oph]], [[1ox1|1ox1]], [[1oyq|1oyq]], [[1p2i|1p2i]], [[1p2j|1p2j]], [[1p2k|1p2k]], [[1ppc|1ppc]], [[1ppe|1ppe]], [[1pph|1pph]], [[1qa0|1qa0]], [[1qb1|1qb1]], [[1qb6|1qb6]], [[1qb9|1qb9]], [[1qbn|1qbn]], [[1qbo|1qbo]], [[1qcp|1qcp]], [[1ql7|1ql7]], [[1ql8|1ql8]], [[1rxp|1rxp]], [[1s0q|1s0q]], [[1s0r|1s0r]], [[1sbw|1sbw]], [[1sfi|1sfi]], [[1smf|1smf]], [[1tab|1tab]], [[1taw|1taw]], [[1tgb|1tgb]], [[1tgc|1tgc]], [[1tgn|1tgn]], [[1tgs|1tgs]], [[1tgt|1tgt]], [[1tio|1tio]], [[1tld|1tld]], [[1tng|1tng]], [[1tnh|1tnh]], [[1tni|1tni]], [[1tnj|1tnj]], [[1tnk|1tnk]], [[1tnl|1tnl]], [[1tpa|1tpa]], [[1tpo|1tpo]], [[1tpp|1tpp]], [[1tps|1tps]], [[1tx7|1tx7]], [[1tx8|1tx8]], [[1tyn|1tyn]], [[1utn|1utn]], [[1uto|1uto]], [[1utp|1utp]], [[1utq|1utq]], [[1v2j|1v2j]], [[1v2k|1v2k]], [[1v2l|1v2l]], [[1v2m|1v2m]], [[1v2n|1v2n]], [[1v2o|1v2o]], [[1v2p|1v2p]], [[1v2q|1v2q]], [[1v2r|1v2r]], [[1v2s|1v2s]], [[1v2t|1v2t]], [[1v2u|1v2u]], [[1v2v|1v2v]], [[1v2w|1v2w]], [[1xuf|1xuf]], [[1xug|1xug]], [[1xuh|1xuh]], [[1xui|1xui]], [[1xuj|1xuj]], [[1xuk|1xuk]], [[1y3u|1y3u]], [[1y3v|1y3v]], [[1y3w|1y3w]], [[1y3x|1y3x]], [[1y3y|1y3y]], [[1y59|1y59]], [[1y5a|1y5a]], [[1y5b|1y5b]], [[1y5u|1y5u]], [[1yp9|1yp9]], [[1yyy|1yyy]], [[1zr0|1zr0]], [[1zzz|1zzz]], [[2a7h|2a7h]], [[2ayw|2ayw]], [[2blv|2blv]], [[2blw|2blw]], [[2btc|2btc]], [[2by5|2by5]], [[2by6|2by6]], [[2by7|2by7]], [[2by8|2by8]], [[2by9|2by9]], [[2bya|2bya]], [[2bza|2bza]], [[2fi3|2fi3]], [[2fi4|2fi4]], [[2fi5|2fi5]], [[2ftl|2ftl]], [[2ftm|2ftm]], [[2fx4|2fx4]], [[2fx6|2fx6]], [[2ptc|2ptc]], [[2ptn|2ptn]], [[2tga|2tga]], [[2tgd|2tgd]], [[2tgp|2tgp]], [[2tgt|2tgt]], [[2tio|2tio]], [[2tld|2tld]], [[2tpi|2tpi]], [[3btd|3btd]], [[3bte|3bte]], [[3btf|3btf]], [[3btg|3btg]], [[3bth|3bth]], [[3btk|3btk]], [[3btm|3btm]], [[3btq|3btq]], [[3btt|3btt]], [[3btw|3btw]], [[3ptb|3ptb]], [[3ptn|3ptn]], [[3tpi|3tpi]], [[4tpi|4tpi]], [[5ptp|5ptp]]</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Trypsin Trypsin], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.21.4 3.4.21.4] </span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2cmy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2cmy OCA], [http://pdbe.org/2cmy PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2cmy RCSB], [http://www.ebi.ac.uk/pdbsum/2cmy PDBsum]</span></td></tr>
</table>
== 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/cm/2cmy_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.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/chain_selection.php?pdb_ID=2ata ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The storage tissues of many plants contain protease inhibitors that are believed to play an important role in defending the plant from invasion by pests and pathogens. These proteinaceous inhibitor molecules belong to a number of structurally distinct families. We describe here the isolation, purification, initial inhibitory properties, and three-dimensional structure of a novel trypsin inhibitor from seeds of Veronica hederifolia (VhTI). The VhTI peptide inhibits trypsin with a submicromolar apparent K(i) and is expected to be specific for trypsin-like serine proteases. VhTI differs dramatically in structure from all previously described families of trypsin inhibitors, consisting of a helix-turn-helix motif, with the two alpha helices tightly associated by two disulfide bonds. Unusually, the crystallized complex is in the form of a stabilized acyl-enzyme intermediate with the scissile bond of the VhTI inhibitor cleaved and the resulting N-terminal portion of the inhibitor remaining attached to the trypsin catalytic serine 195 by an ester bond. A synthetic, truncated version of the VhTI peptide has also been produced and co-crystallized with trypsin but, surprisingly, is seen to be uncleaved and consequently forms a noncovalent complex with trypsin. The VhTI peptide shows that effective enzyme inhibitors can be constructed from simple helical motifs and provides a new scaffold on which to base the design of novel serine protease inhibitors.

An unusual helix-turn-helix protease inhibitory motif in a novel trypsin inhibitor from seeds of Veronica (Veronica hederifolia L.).,Conners R, Konarev AV, Forsyth J, Lovegrove A, Marsh J, Joseph-Horne T, Shewry P, Brady RL J Biol Chem. 2007 Sep 21;282(38):27760-8. Epub 2007 Jul 19. PMID:17640870<ref>PMID:17640870</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2cmy" style="background-color:#fffaf0;"></div>

==See Also==
*[[Trypsin|Trypsin]]
*[[Trypsin inhibitor|Trypsin inhibitor]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Bos taurus]]
[[Category: Trypsin]]
[[Category: Veronica hederifolia]]
[[Category: Brady, R L]]
[[Category: Conners, R]]
[[Category: Konarev, A]]
[[Category: Shewry, P]]
[[Category: Yardley, J L]]
[[Category: Acyl-enzyme intermediate]]
[[Category: Digestion]]
[[Category: Hydrolase]]
[[Category: Metal-binding]]
[[Category: Protease]]
[[Category: Serine protease]]
[[Category: Serine protease inhibitor]]
[[Category: Zymogen]]