Dual specificity phosphatase: Difference between revisions

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{{STRUCTURE_1ohe| PDB=1ohe | SIZE=400 | SCENE= |right|CAPTION=Human Cdc14B2 core domain (grey) complex with tripeptide (green) and acetyl (PDB code [[1ohe]]). }}
<StructureSection load='' size='350' side='right' scene='44/444621/Cv/1' caption='Human Cdc14B2 core domain (cyan) complex with tripeptide (green) and acetyl (PDB code [[1ohe]]).'>


'''Dual specificity phosphatase''' (DUSP) is a phosphatase which acts on tyrosine, serine or threonine residues.  There are several DUSP enzymes in mammals sharing a common catalytic mechanism.  The DUSP include:<br />
== Function ==
• Slingshot phosphatase<br />
• Phosphatase of regenerating liver<br />
• Cdc14<br />
• Cdc25<br />
• PTEN<br />
• Myotubularin<br />
• MAPK phosphatase see [[MAP kinase phosphatase]]<br />


==3D structures of dual specificity phosphatase==
'''Dual specificity phosphatase''' or '''Dual specificity protein phosphatase''' (DUSP) is a phosphatase which dephosphorylates phosphotyrosine, phosphoserine or phosphothreonine residues<ref>PMID:19228121</ref>.  There are several DUSP enzymes in mammals sharing a common catalytic mechanism.  The DUSP include:<br />
• '''Slingshot phosphatase'''<ref>PMID:17848544</ref><br />
• '''Phosphatase of regenerating liver''' (PRL)<ref>PMID:24030100</ref><br />
• '''Cdc14''' leads to mitotic exit by dephosphorylation of targets of the protein kinase Cdk1.<ref>PMID:15568976</ref><br />
• '''Cdc25''' activates Cdk1 by its dephosphorylation.<ref>PMID:15324805</ref><br />
• '''PTEN''' (Phosphatase and TEnsin homolog) dephosphorylates phosphasitide substrates.<ref>PMID:10555148</ref>  For details see [[PTEN]].<br />
• '''Myotubularin''' dephosphorylates phosphadinylinositol 3-phosphate and phosphadinylinositol (3,5)-bi-phosphate<ref>PMID:12847286</ref><br />
• '''MAPK phosphatase''' see [[MAP kinase phosphatase]]<br />


Updated on {{REVISIONDAY2}}-{{MONTHNAME|{{REVISIONMONTH}}}}-{{REVISIONYEAR}}
== Relevance ==


===slingshot phosphatase (SSH)===
'''Cdc25A''' and '''Cdc25B''' are overexpressed in several types of cancers and their inhibitors are being tested as chemotherapeutic agents.<br />
'''PTEN''' gene is mutated with high frequency in a variety of human cancers.<ref>PMID:18298792</ref><br />
'''Phosphatase of regenerating liver''' is overexpressed in several types of cancers.


[[2nt2]]  – hSSH-2L catalytic domain - human<br />
== Disease ==


===Phosphatase of regenerating liver (RPL)===
Myotubularin mutations are responsible for the hereditary motor disease Charcot-Marie-Tooth disease.<ref>PMID:12045210</ref>


[[1xm2]]  – hPRL-1 (mutant)<br />
== Structural highlights ==
[[1zck]], [[1x24]]  – rPRL-1 - rat<br />
[[1zcl]]  – rPRL-1 (mutant)<br />
[[1r6h]], [[1v3a]], [[2mbc]]  – hPRL-3 - NMR<br />


===Cdc14===
<scene name='44/444621/Cv/6'>Tripeptide binding site</scene> in human Cdc14B2 (PDB code [[1ohe]]).<ref>PMID:12853468</ref>


[[1ohc]], [[1ohd]]  – hCdc14B2 core domain <br />
==3D structures of dual specificity phosphatase==
[[1ohe]]  – hCdc14B2 core domain + peptide<br />
[[Dual specificity phosphatase 3D structures]]
 
===Cdc25===
 
[[1qb0]], [[1cwr]], [[1cws]], [[1cwt]], [[1ym9]], [[1ymd]], [[1ymk]], [[1yml]], [[1ys0]], [[2uzq]]  – hCdc25B catalytic domain <br />
[[2a2k]], [[2ifd]], [[2ifv]]  – hCdc25B catalytic domain (mutant)<br />
 
===Phosphoinositide phosphatase PTEN===
 
[[1d5r]]  – hPTEN (mutant)<br />
 
===Myotubularin-related protein (MTMR)===
 
[[1zvr]] – hMTMR2 PH-gram and phosphatase domains (mutant)<br />
[[1zsq]] - hMTMR2 PH-gram and phosphatase domains (mutant) + phosphatidylinositol 3-phosphate<br />
[[1m7r]], [[1lw3]] - hMTMR2 PH-gram and phosphatase domains (mutant) + phosphate<br />
[[2yf0]] – hMTMR6<br />
 
===MAPK phosphatase===


[[MAP kinase phosphatase]]
</StructureSection>


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

Latest revision as of 07:17, 11 July 2021

Human Cdc14B2 core domain (cyan) complex with tripeptide (green) and acetyl (PDB code 1ohe).

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References

Proteopedia Page Contributors and Editors (what is this?)

Michal Harel, Alexander Berchansky, Jaime Prilusky, Joel L. Sussman