Peroxiredoxin: Difference between revisions

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{{STRUCTURE_1qq2|  PDB=1qq2 | SIZE=400| SCENE= |right|CAPTION=Peroxiredoxin dimer complex with Cl- ions [[1qq2]]}}
<StructureSection load='1qq2' size='350' side='right' scene='43/433646/Cv/2' caption='Typical 2-cys peroxiredoxin dimer complex with Cl- ions [[1qq2]]'>
== Function ==
== Function ==
[[Peroxiredoxin]] (Prx) is an antioxidant enzyme.  In the Prxs the active-site Cys is oxidized to sulfenic acid hyper oxide forming a Cys-SOH intermediate.  A second Cys residue resolves the intermediate to a protein disulfide bond.  The Prxs are divided into 3 types according to their intermediate resolving mechanism: '''typical 2-Cysteine Prx''' in which the Cys-Cys bond is formed between two subunits, '''atypical 2-Cys Prx''' in which the bond is formed within one subunit and '''1-Cysteine Prx''' which uses a single Cys residue for the catalysis.  
[[Peroxiredoxin]] (Prx) is an antioxidant enzyme.  In the Prxs the active-site Cys is oxidized to sulfenic acid hyper oxide forming a Cys-SOH intermediate.  A second Cys residue resolves the intermediate to a protein disulfide bond.  The Prxs are divided into 3 types according to their intermediate resolving mechanism: '''typical 2-Cysteine Prx''' in which the Cys-Cys bond is formed between two subunits, '''atypical 2-Cys Prx''' in which the bond is formed within one subunit and '''1-Cysteine Prx''' which uses a single Cys residue for the catalysis. '''Prx Q''' is the plant homolog of [[Bacterioferritin comigratory protein]].


'''Typical 2-Cys Prx'''<br />
'''Typical 2-Cys Prx'''<br />
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== Relevance ==
== Relevance ==
Prx are over expressed in cancer tissue<ref>PMID:11497302</ref>.  Prx 4 mediates osteoclast activation in cancer cells<ref>PMID:25779674</ref>.
Prx are over expressed in cancer tissue<ref>PMID:11497302</ref>.  Prx 4 mediates osteoclast activation in cancer cells<ref>PMID:25779674</ref>.
== Structural highlights ==
In the typical 2-cysteine Prx the <scene name='43/433646/Cv/5'>Cys-Cys bond is formed between two subunits</scene><ref>PMID:10535922</ref>. <scene name='43/433646/Cv/6'>Cl coordination site</scene>. Water molecules is shown as red sphere.


== 3D Structures of Peroxiredoxin ==  
== 3D Structures of Peroxiredoxin ==  
[[Peroxiredoxin 3D structures]]


Updated on {{REVISIONDAY2}}-{{MONTHNAME|{{REVISIONMONTH}}}}-{{REVISIONYEAR}}
</StructureSection>
{{#tree:id=OrganizedByTopic|openlevels=0|
 
*Peroxiredoxin
 
**[[1qq2]] – r2Cys-Prx – rat<br />
**[[2c0d]] – Pf2Cys-Prx – ''Plasmodium falciparum''<br />
**[[1xiy]] – Pf1Cys-Prx<br />
**[[1xcc]], [[2h01]], [[3tb2]] - 1Cys-Prx – ''Plasmodium yoelii''<br />
**[[2i81]] - 2Cys-Prx – ''Plasmodium vivax''<br />
**[[1qmv]] - h2Cys-Prx – human<br />
**[[2a4v]] – yPrx dot5 C-terminal (mutant) – yeast<br />
**[[3cmi]] – yPrx hyr1 - yeast<br />
**[[4g2e]] – Prx – ''Sulfolobus tokodaii''<br />
**[[3sbc]] – yPrx Tsa1 (mutant)<br />
**[[1uul]] - 2Cys-Prx – ''Trypanosoma cruzi''<br />
**[[1we0]] – Prx – ''Amphibacillus xylanus''<br />
**[[2cv4]], [[2cx3]], [[2cx4]] – Prx – ''Aeropyrum pernix''<br />
**[[3drn]] – SsPrx – ''Sulfolobus solfataricus''<br />
**[[3hjp]] – SsPrx (mutant)<br />
**[[3ixr]] – Prx PRXQ (mutant) – ''Xylella fastidiosa''<br />
 
*Peroxiredoxin 1
 
**[[2rii]], [[3hy2]] – hPrx 1 (mutant)+sulfiredoxin 1<br />
**[[2z9s]] – rPrx 1 (mutant) <br />
**[[4kw6]], [[4fh8]] – Prx 1 – ''Ancylostoma ceylanicum''<br />
**[[3zl5]] - mPrx 1 (mutant) – mouse<br />
 
*Peroxiredoxin 2
 
**[[1tp9]] – Prx  II – ''Populus trichocarpa''<br />
**[[2pwj]] – Prx II – garden pea<br />
**[[4dsq]], [[4dsr]], [[4h86]], [[4owy]] – yPrx II<br />
**[[4dss]] – yPrx II (mutant) + thioredoxin II<br />
 
*Peroxiredoxin 3
 
**[[1zye]] – Prx III (mutant) – bovine<br />
 
*Peroxiredoxin 4
 
**[[3tjf]], [[3tjg]], [[3tjj]], [[3tjk]], [[3tkr]] - hPrx 4 (mutant)<br />
**[[4rqx]] – hPrx 4 + thioethanesulfonic acid<br />
**[[3qpm]] – Prx 4 – ''Larimichtys crocea''<br />
**[[2pn8]], [[3tjb]], [[3tkp]], [[3tkq]], [[3tks]]  – hPrx 4<br />
**[[3vwu]], [[3vwv]] - mPrx 4 (mutant) <br />
 
*Peroxiredoxin 5
 
**[[1urm]] – hPrx 5 (mutant) – human<br />
**[[2vl2]], [[2vl3]], [[2vl9]], [[1h4o]], [[1hd2]], [[1oc3]]  – hPrx 5<br />
**[[3mng]] – hPrx 5+DTT<br />
**[[4k7i]], [[4k7n]], [[4k7o]], [[4mmm]] – hPrx 5 catalytic domain + fragment<br />
**[[2wfc]] – lPrx 5 - lugworm<br />
**[[2xhf]] – Prx 5 – ''Alvinella pompejana''<br />
 
*Peroxiredoxin 6
 
**[[2v2g]] – lPrx 6 <br />
**[[2v32]], [[2v41]] – lPrx 6 (mutant)<br />


}}
== References ==
== References ==
<references/>
<references/>
[[Category:Topic Page]]
[[Category:Topic Page]]
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