2i26

From Proteopedia

(Difference between revisions)

Revision as of 08:33, 4 July 2018

Crystal structure analysis of the nurse shark new antigen receptor ancestral variable domain in complex with lysozyme

Structural highlights

2i26 is a 6 chain structure with sequence from Ginci and Gallus gallus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Related:	2i24, 2i25, 2i27
Activity:	Lysozyme, with EC number 3.2.1.17
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[LYSC_CHICK] Lysozymes have primarily a bacteriolytic function; those in tissues and body fluids are associated with the monocyte-macrophage system and enhance the activity of immunoagents. Has bacteriolytic activity against M.luteus.^[1]

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

Sharks express an unusual heavy-chain isotype called IgNAR, whose variable regions bind antigen as independent soluble domains. To further probe affinity maturation of the IgNAR response, we structurally characterized the germline and somatically matured versions of a type II variable (V) region, both in the presence and absence of its antigen, hen egg-white lysozyme. Despite a disulfide bond linking complementarity determining regions (CDRs) 1 and 3, both germline and somatically matured V regions displayed significant structural changes in these CDRs upon complex formation with antigen. Somatic mutations in the IgNAR V region serve to increase the number of contacts with antigen, as reflected by a tenfold increase in affinity, and one of these mutations appears to stabilize the CDR3 region. In addition, a residue in the HV4 loop plays an important role in antibody-antigen interaction, consistent with the high rate of somatic mutations in this non-CDR loop.

Maturation of shark single-domain (IgNAR) antibodies: evidence for induced-fit binding.,Stanfield RL, Dooley H, Verdino P, Flajnik MF, Wilson IA J Mol Biol. 2007 Mar 23;367(2):358-72. Epub 2006 Dec 22. PMID:17258766^[2]

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

References

↑ Maehashi K, Matano M, Irisawa T, Uchino M, Kashiwagi Y, Watanabe T. Molecular characterization of goose- and chicken-type lysozymes in emu (Dromaius novaehollandiae): evidence for extremely low lysozyme levels in emu egg white. Gene. 2012 Jan 15;492(1):244-9. doi: 10.1016/j.gene.2011.10.021. Epub 2011 Oct, 25. PMID:22044478 doi:10.1016/j.gene.2011.10.021
↑ Stanfield RL, Dooley H, Verdino P, Flajnik MF, Wilson IA. Maturation of shark single-domain (IgNAR) antibodies: evidence for induced-fit binding. J Mol Biol. 2007 Mar 23;367(2):358-72. Epub 2006 Dec 22. PMID:17258766 doi:10.1016/j.jmb.2006.12.045

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2i26"

@@ Line 1: / Line 1: @@
 ==Crystal structure analysis of the nurse shark new antigen receptor ancestral variable domain in complex with lysozyme==
 <StructureSection load='2i26' size='340' side='right' caption='[[2i26]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2i26]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Chick Chick] and [http://en.wikipedia.org/wiki/Ginci Ginci]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2I26 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2I26 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2i26]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Ginci Ginci] and [http://en.wikipedia.org/wiki/Gallus_gallus Gallus gallus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2I26 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2I26 FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2i24|2i24]], [[2i25|2i25]], [[2i27|2i27]]</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Lysozyme Lysozyme], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.17 3.2.1.17] </span></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=2i26 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2i26 OCA], [http://pdbe.org/2i26 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2i26 RCSB], [http://www.ebi.ac.uk/pdbsum/2i26 PDBsum]</span></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=2i26 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2i26 OCA], [http://pdbe.org/2i26 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2i26 RCSB], [http://www.ebi.ac.uk/pdbsum/2i26 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2i26 ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 14: / Line 15: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/i2/2i26_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/i2/2i26_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
   </jmolCheckbox>
-</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
+</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2i26 ConSurf].
 <div style="clear:both"></div>
 <div style="background-color:#fffaf0;">
@@ Line 36: / Line 37: @@
 __TOC__
 </StructureSection>
-[[Category: Chick]]
+[[Category: Gallus gallus]]
 [[Category: Ginci]]
 [[Category: Lysozyme]]

2i26

From Proteopedia

Revision as of 08:33, 4 July 2018

Crystal structure analysis of the nurse shark new antigen receptor ancestral variable domain in complex with lysozyme

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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