Spermidine Synthase: Difference between revisions

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<StructureSection load='3c6k' size='350' side='right' caption='Structure of human spermidine synthase complex with spermidine and deoxymethyladenosine (PDB entry [[3c6k]])' scene='49/497058/Cv/2'>


<StructureSection load='3c6k' size='350' side='right' caption='Structure of human spermidine synthase complex with spermidine and deoxymethyladenosine (PDB entry [[3c6k]])' scene=''>
<font color='red'><b>Under construction!</b></font><br />
== Function ==
== Function ==
Polyamines are essential in all branches of life. '''Spermidine synthase''' (putrescine aminopropyltransferase, PAPT) (SPS) catalyzes the biosynthesis of spermidine, a ubiquitous polyamine<ref>PMID:17585781</ref>. SPS catalyzes the transfer of aminopropyl group from decarboxylated S-adenosylmethionine (SAM) to the amine acceptor spermidine.
Polyamines are essential in all branches of life. '''Spermidine synthase''' (putrescine aminopropyltransferase, PAPT) (SPS) catalyzes the biosynthesis of spermidine, a ubiquitous polyamine.
 
[[1inl]] - The crystal structure of the PAPT from ''Thermotoga maritima'' (TmPAPT) has been solved to 1.5 A resolution.
== Disease ==
The structure of TmPAPT in a complex with adoDATO ([[1jq3]]) can also be found on this site.
SPS deficiency causes the intellectual disability Snyder-Robinson syndrome<ref>PMID:21318891</ref>.


==Structural highlights ==
==Structural highlights ==
<scene name='49/497058/Cv/5'>SPS active sited contains the substrate spermidine</scene><ref>PMID:18367445</ref>. Water molecules shown as red spheres.
SPS active sited contains the substrate spemidine<ref>PMID:18367445</ref>.
</StructureSection>
</StructureSection>
==3D structures of spermidine synthase==
==3D structures of spermidine synthase==
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*Ternary complexes of spermidine synthase
*Ternary complexes of spermidine synthase


**[[3c6k]], [[4cxm]], [[4uoe]] - hSPS + methylthioadenosine + spermidine<br />
**[[3c6k]] - hSPS + methylthioadenosine + spermidine<br />
**[[3c6m]] - hSPS + methylthioadenosine + spermine<br />
**[[3c6m]] - hSPS + methylthioadenosine + spermine<br />
**[[2pt6]], [[3rie]], [[4bp3]], [[4bp1]] - PfSPS + inhibitor + methylthioadenosine<br />
**[[2pt6]], [[3rie]] - PfSPS + inhibitor + methylthioadenosine<br />
**[[2pt9]] - PfSPS + inhibitor + SAM derivative<br />
**[[2pt9]] - PfSPS + inhibitor + SAM derivative<br />
**[[4cwa]] - PfSPS + inhibitor + ethanol derivative<br />
**[[4yv0]], [[4yv1]], [[4yv2]], [[4yuv]], [[4yuw]], [[4yux]], [[4yuy]], [[4yuz]] - TcSPS + inhibitor + SAM derivative<br />
}}
}}
== References ==
== References ==

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

Alexander Berchansky, Michal Harel, Joel L. Sussman