1viw: Difference between revisions

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== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1viw]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Phaseolus_vulgaris Phaseolus vulgaris] and [http://en.wikipedia.org/wiki/Tenebrio_molitor Tenebrio molitor]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1VIW OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1VIW FirstGlance]. <br>
<table><tr><td colspan='2'>[[1viw]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Phaseolus_vulgaris Phaseolus vulgaris] and [http://en.wikipedia.org/wiki/Tenebrio_molitor Tenebrio molitor]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1VIW OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1VIW FirstGlance]. <br>
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene><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=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
<tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=PCA:PYROGLUTAMIC+ACID'>PCA</scene></td></tr>
<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=PCA:PYROGLUTAMIC+ACID'>PCA</scene></td></tr>
<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Alpha-amylase Alpha-amylase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.1 3.2.1.1] </span></td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Alpha-amylase Alpha-amylase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.1 3.2.1.1] </span></td></tr>
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1viw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1viw OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1viw RCSB], [http://www.ebi.ac.uk/pdbsum/1viw PDBsum]</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=1viw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1viw OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1viw RCSB], [http://www.ebi.ac.uk/pdbsum/1viw PDBsum]</span></td></tr>
<table>
</table>
== Function ==
[[http://www.uniprot.org/uniprot/LEA1_PHAVU LEA1_PHAVU]] Lectin and alpha-amylase inhibitor. Acts as a defensive protein against insects.[:]
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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==See Also==
==See Also==
*[[Amylase|Amylase]]
*[[Amylase|Amylase]]
*[[User:Gabriel Pons/Sandbox 2|User:Gabriel Pons/Sandbox 2]]
== References ==
== References ==
<references/>
<references/>
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[[Category: Phaseolus vulgaris]]
[[Category: Phaseolus vulgaris]]
[[Category: Tenebrio molitor]]
[[Category: Tenebrio molitor]]
[[Category: Egloff, M P.]]
[[Category: Egloff, M P]]
[[Category: Nahoum, V.]]
[[Category: Nahoum, V]]
[[Category: Payan, F.]]
[[Category: Payan, F]]
[[Category: Hydrolase]]
[[Category: Hydrolase]]
[[Category: Inhibitor]]
[[Category: Inhibitor]]
[[Category: Insect alpha-amylase]]
[[Category: Insect alpha-amylase]]
[[Category: Lectin]]
[[Category: Lectin]]

Revision as of 21:39, 25 December 2014

TENEBRIO MOLITOR ALPHA-AMYLASE-INHIBITOR COMPLEXTENEBRIO MOLITOR ALPHA-AMYLASE-INHIBITOR COMPLEX

Structural highlights

1viw is a 2 chain structure with sequence from Phaseolus vulgaris and Tenebrio molitor. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:, ,
NonStd Res:
Activity:Alpha-amylase, with EC number 3.2.1.1
Resources:FirstGlance, OCA, RCSB, PDBsum

Function

[LEA1_PHAVU] Lectin and alpha-amylase inhibitor. Acts as a defensive protein against insects.[:]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The alpha-amylase from Tenebrio molitor larvae (TMA) has been crystallized in complex with the alpha-amylase inhibitor (alpha-AI) from the bean Phaseolus vulgaris. A molecular-replacement solution of the structure was obtained using the refined pig pancreatic alpha-amylase (PPA) and alpha-AI atomic coordinates as starting models. The structural analysis showed that although TMA has the typical structure common to alpha-amylases, large deviations from the mammalian alpha-amylase models occur in the loops. Despite these differences in the interacting loops, the bean inhibitor is still able to inhibit both the insect and mammalian alpha-amylase.

A plant-seed inhibitor of two classes of alpha-amylases: X-ray analysis of Tenebrio molitor larvae alpha-amylase in complex with the bean Phaseolus vulgaris inhibitor.,Nahoum V, Farisei F, Le-Berre-Anton V, Egloff MP, Rouge P, Poerio E, Payan F Acta Crystallogr D Biol Crystallogr. 1999 Jan;55(Pt 1):360-2. Epub 1999, Jan 1. PMID:10089450[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

See Also

References

  1. Nahoum V, Farisei F, Le-Berre-Anton V, Egloff MP, Rouge P, Poerio E, Payan F. A plant-seed inhibitor of two classes of alpha-amylases: X-ray analysis of Tenebrio molitor larvae alpha-amylase in complex with the bean Phaseolus vulgaris inhibitor. Acta Crystallogr D Biol Crystallogr. 1999 Jan;55(Pt 1):360-2. Epub 1999, Jan 1. PMID:10089450 doi:10.1107/S0907444998010701

1viw, resolution 3.00Å

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