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Sandbox 39
From Proteopedia
(Difference between revisions)
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=='''Papain'''== | =='''Papain'''== | ||
| - | ==Introduction== | + | == Introduction == |
Papain (9PAP), also known as papaya proteinase I, is an enzyme found in unripe papaya fruit. A cysteine protease, it has been used to break down tough muscle fibers, and hence is often found in powdered meat tenderizers. It is collected from the fruit by scoring its skin and allowing the "sap" to seem out. The sap is then dried and purified. | Papain (9PAP), also known as papaya proteinase I, is an enzyme found in unripe papaya fruit. A cysteine protease, it has been used to break down tough muscle fibers, and hence is often found in powdered meat tenderizers. It is collected from the fruit by scoring its skin and allowing the "sap" to seem out. The sap is then dried and purified. | ||
| - | ==Function== | + | == Function == |
As a cysteine protease, Papain utilizes a nucleophilic cysteine thiol as part of its catalytic triad. | As a cysteine protease, Papain utilizes a nucleophilic cysteine thiol as part of its catalytic triad. | ||
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<ref>Image from: | <ref>Image from: | ||
http://upload.wikimedia.org/wikipedia/commons/5/5c/Cysteinprotease_Reaktionsmechanismus.svg</ref> | http://upload.wikimedia.org/wikipedia/commons/5/5c/Cysteinprotease_Reaktionsmechanismus.svg</ref> | ||
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| + | <scene name='Sandbox_39/Hydrphobic_residues/1'>hydrophobic residues shown in yellow</scene> | ||
Revision as of 22:55, 8 November 2011
| Please do NOT make changes to this Sandbox. Sandboxes 30-60 are reserved for use by Biochemistry 410 & 412 at Messiah College taught by Dr. Hannah Tims during Fall 2012 and Spring 2013. |
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