Sandbox GGC1

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==Crystal structure of the tandem SAM domains from human SARM1==
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==Kinesin Motor Domain==
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<StructureSection load='6O0S' size='340' side='right' caption='RNAse P Protein=''>
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<StructureSection load='1bg2' size='340' side='right' caption='Kinesin Protein' scene=''>
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This is a default text for your page '''Sandbox GGC1'''. Click above on '''edit this page''' to modify. Be careful with the &lt; and &gt; signs.
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Kinesin is an ATP-dependent motor protein responsible for the transportation of cargo. It is a heterotetramer composed of light and heavy chains.
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You may include any references to papers as in: the use of JSmol in Proteopedia <ref>DOI 10.1002/ijch.201300024</ref> or to the article describing Jmol <ref>PMID:21638687</ref> to the rescue.
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== Function ==
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== '''Function''' ==
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SARM1 is a protein that contains SAM and TIR domains. SARM1 is involved in the cleavage of NAD+. The SAM domains form an octamer and play a part in axon degeneration by contributing to the enzymatic activity of TIR.
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* Moving cargo usually from the center of the cell to the margins <br/>
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== Disease ==
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* Involved in cell replication and axonal signaling
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The SAM domains are involved in Wallerian degeneration. In Wallerian degeneration, axons are degenerated following damage. This nerve damage can lead to neuropathic diseases. SARM1 causes cell death in plants also by cleaving NAD+.
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== Structural highlights ==
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== '''Disease''' ==
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The SAM domains need to form an octamer for SARM1 to be able to cleave NAD+. Five amino acids were found to be important for this to occur: Leu 442, Ile 461, Leu 514, Leu 531, and Val 533. If these amino acids were changed to arginine or aspartate, then NAD+ would no longer be able to be cleaved. <scene name='75/752263/Important_hydrophobic_residues/2'>ImportantAminoAcids</scene> <scene name='75/752263/Area_of_interest/1'>AreaOfInterest</scene> <scene name='75/752263/Close_up_hydrophobic_residues/2'>CloseUpOfAminoAcids</scene>
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*Charcot Marie Tooth (CMT): Charcot Marie Tooth is one of many diseases that affect the peripheral nervous system. Individuals may suffer physical disabilities due to weakness in transmission of signals firing from the central nervous system
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== '''Structural highlights''' ==
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;Scene #1: Kinesin structure is composed of eight anti-parallel Beta sheets and three alpha helices on opposite sides <scene name='75/752263/Alpha_beta_sheets/5'> Alpha-beta structure </scene>
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;Scene #2: This is the ATP binding site. Upon the binding of phosphate to ADP, ATP is formed giving Kinesin the energy needed to move the cargo one step a head to its destination <scene name='75/752263/Atp_binding_site/5'> ATP-binding site </scene>
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;Scene #3: This is the Microtubule-binding site, where Kinesin binds to microtubules for stability <scene name='75/752263/Mt-binding_site/1'> MT-binding site </scene>
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;Scene #4: some patients with CMT show mutation in the p-loop. A missense mutation results in a leucine in place of glutamine affecting signal transmission <scene name='75/752263/Cmt/1'> CMT </scene>
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This is a sample scene created with SAT to <scene name="/12/3456/Sample/1">color</scene> by Group, and another to make <scene name="/12/3456/Sample/2">a transparent representation</scene> of the protein. You can make your own scenes on SAT starting from scratch or loading and editing one of these sample scenes.
</StructureSection>
</StructureSection>
== References ==
== References ==
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1. Horsefield, S., Burdett, H., Zhang, X., Manik, M. K., Shi, Y., Chen, J., … Kobe, B. (2019). NAD cleavage activity by animal and plant TIR domains in cell death pathways. Science, 365(6455), 793–799. doi: 10.1126/science.aax1911
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#file:///C:/Users/Muna/Desktop/Spring%202021/Advanced%20Biochem/pcbi.1003329.pdf
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#https://www.ncbi.nlm.nih.gov/books/NBK22572/#:~:text=Kinesins%20moving%20along%20microtubules%20usually,surfaces%20of%20some%20eukaryotic%20cells.
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#https://www.ninds.nih.gov/Disorders/Patient-Caregiver-Education/Fact-Sheets/Charcot-Marie-Tooth-Disease-Fact-Sheet
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<references/>

Current revision

Kinesin Motor Domain

Kinesin Protein

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References

  1. file:///C:/Users/Muna/Desktop/Spring%202021/Advanced%20Biochem/pcbi.1003329.pdf
  2. https://www.ncbi.nlm.nih.gov/books/NBK22572/#:~:text=Kinesins%20moving%20along%20microtubules%20usually,surfaces%20of%20some%20eukaryotic%20cells.
  3. https://www.ninds.nih.gov/Disorders/Patient-Caregiver-Education/Fact-Sheets/Charcot-Marie-Tooth-Disease-Fact-Sheet
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