Lotem haleva/test page

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== Function ==
== Function ==
In the duodenum, trypsin catalyzes the hydrolysis of peptide bonds, breaking down proteins into smaller peptides.
In the duodenum, trypsin catalyzes the hydrolysis of peptide bonds, breaking down proteins into smaller peptides.
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Trypsin contains <scene name='60/607865/Helix/1'>alpha helix</scene> and beta sheets.
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== Mechanism ==
The enzymatic mechanism is similar to that of other serine proteases. These enzymes contain a catalytic triad consisting of <scene name='60/607865/Active_site/2'>histidine-57, aspartate-102, and serine-195</scene>. These three residues form a charge relay that serves to make the active site serine nucleophilic.
The enzymatic mechanism is similar to that of other serine proteases. These enzymes contain a catalytic triad consisting of <scene name='60/607865/Active_site/2'>histidine-57, aspartate-102, and serine-195</scene>. These three residues form a charge relay that serves to make the active site serine nucleophilic.
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Trypsin contains an "oxyanion hole" formed by the backbone amide hydrogen atoms of <scene name='60/607865/Oxyanion_hole/1'>Gly-193 and Ser-195</scene> , which serves to stabilize the developing negative charge on the carbonyl oxygen atom of the cleaved amides.
Trypsin contains an "oxyanion hole" formed by the backbone amide hydrogen atoms of <scene name='60/607865/Oxyanion_hole/1'>Gly-193 and Ser-195</scene> , which serves to stabilize the developing negative charge on the carbonyl oxygen atom of the cleaved amides.
The <scene name='60/607865/Asp_189/1'>aspartate residue</scene> located in the catalytic pocket (S1) of trypsin is responsible for attracting and stabilizing positively charged lysine and/or arginine, and is, thus, responsible for the specificity of the enzyme.
The <scene name='60/607865/Asp_189/1'>aspartate residue</scene> located in the catalytic pocket (S1) of trypsin is responsible for attracting and stabilizing positively charged lysine and/or arginine, and is, thus, responsible for the specificity of the enzyme.
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== Mechanism ==
 
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== Relevance ==
== Relevance ==

Revision as of 10:20, 23 November 2014

Your Heading Here (maybe something like 'Structure')

Trysine

Drag the structure with the mouse to rotate

References

  1. Rawlings ND, Barrett AJ. Families of serine peptidases. Methods Enzymol. 1994;244:19-61. doi: 10.1016/0076-6879(94)44004-2. PMID:7845208 doi:http://dx.doi.org/10.1016/0076-6879(94)44004-2

Proteopedia Page Contributors and Editors (what is this?)

Lotem Haleva, Michal Harel

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