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2j9i

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Revision as of 21:34, 15 November 2017

Lengsin is a survivor of an ancient family of class I glutamine synthetases in eukaryotes that has undergone evolutionary re- engineering for a tissue-specific role in the vertebrate eye lens.

Structural highlights

2j9i is a 12 chain structure with sequence from Lk3 transgenic mice. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Lengsin is a major protein of the vertebrate eye lens. It belongs to the hitherto purely prokaryotic GS I branch of the glutamine synthetase (GS) superfamily, but has no enzyme activity. Like the taxon-specific crystallins, Lengsin is the result of the recruitment of an ancient enzyme to a noncatalytic role in the vertebrate lens. Cryo-EM and modeling studies of Lengsin show a dodecamer structure with important similarities and differences with prokaryotic GS I structures. GS homology regions of Lengsin are well conserved, but the N-terminal domain shows evidence of dynamic evolutionary changes. Compared with birds and fish, most mammals have an additional exon corresponding to part of the N-terminal domain; however, in human, this is a nonfunctional pseudoexon. Genes related to Lengsin are also present in the sea urchin, suggesting that this branch of the GS I family, supplanted by GS II enzymes in vertebrates, has an ancient role in metazoans.

Lengsin is a survivor of an ancient family of class I glutamine synthetases re-engineered by evolution for a role in the vertebrate lens.,Wyatt K, White HE, Wang L, Bateman OA, Slingsby C, Orlova EV, Wistow G Structure. 2006 Dec;14(12):1823-34. PMID:17161372^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Wyatt K, White HE, Wang L, Bateman OA, Slingsby C, Orlova EV, Wistow G. Lengsin is a survivor of an ancient family of class I glutamine synthetases re-engineered by evolution for a role in the vertebrate lens. Structure. 2006 Dec;14(12):1823-34. PMID:17161372 doi:http://dx.doi.org/10.1016/j.str.2006.10.008

1 Structural highlights
2 Evolutionary Conservation
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2j9i"

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 ==Lengsin is a survivor of an ancient family of class I glutamine synthetases in eukaryotes that has undergone evolutionary re- engineering for a tissue-specific role in the vertebrate eye lens.==
 <StructureSection load='2j9i' size='340' side='right' caption='[[2j9i]], [[Resolution|resolution]] 17.00&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[2j9i]] is a 12 chain structure with sequence from [http://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2J9I OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2J9I FirstGlance]. <br>
-</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2j9i FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2j9i OCA], [http://pdbe.org/2j9i PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2j9i RCSB], [http://www.ebi.ac.uk/pdbsum/2j9i PDBsum]</span></td></tr>
+</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2j9i FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2j9i OCA], [http://pdbe.org/2j9i PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2j9i RCSB], [http://www.ebi.ac.uk/pdbsum/2j9i PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2j9i ProSAT]</span></td></tr>
 </table>
 == Evolutionary Conservation ==

2j9i

From Proteopedia

Revision as of 21:34, 15 November 2017

Lengsin is a survivor of an ancient family of class I glutamine synthetases in eukaryotes that has undergone evolutionary re- engineering for a tissue-specific role in the vertebrate eye lens.

Structural highlights

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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