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5iml

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Nanobody targeting human Vsig4 in Spacegroup P212121

Structural highlights

5iml is a 2 chain structure with sequence from Camelidae and Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.8Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

VSIG4_HUMAN Phagocytic receptor, strong negative regulator of T-cell proliferation and IL2 production. Potent inhibitor of the alternative complement pathway convertases.^[1] ^[2]

Publication Abstract from PubMed

Vsig4 is a recently identified immune regulatory protein related to the B7 family with dual functionality: a negative regulator of T cell activation and a receptor for the complement components C3b and C3c. Here we present a structural evaluation of a nanobody, Nb119, against the extracellular IgV domain protein of both mouse and human recombinant Vsig4, which have a high degree of sequence identity. Although mouse and human Vsig4 bind to Nb119 with a 250 times difference in dissociation constants, the interaction results in a highly identical assembly with a RMSD of 0.4A. The molecular determinants for Vsig4 recognition and cross reactivity unveiled by the atomic structure of Nb119 in complex with mVsig4 and hVsig4 afford new insights useful for the further optimization of the nanobody for potential use in humans. Additionally, structural analysis of the Vsig4-Nb119 complexes indicates that Nb119 occupies the interface on Vsig4 recognized by the macroglobulin-like domains MG4 and MG5 of C3b. Thus an affinity-improved Nb119 may have the potential to influence the activation of both T cells and complement.

Structural evaluation of a nanobody targeting complement receptor Vsig4 and its cross reactivity.,Wen Y, Ouyang Z, Schoonooghe S, Luo S, De Baetselier P, Lu W, Muyldermans S, Raes G, Zheng F Immunobiology. 2016 Nov 18. pii: S0171-2985(16)30436-3. doi:, 10.1016/j.imbio.2016.11.008. PMID:27889311^[3]

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

References

↑ Vogt L, Schmitz N, Kurrer MO, Bauer M, Hinton HI, Behnke S, Gatto D, Sebbel P, Beerli RR, Sonderegger I, Kopf M, Saudan P, Bachmann MF. VSIG4, a B7 family-related protein, is a negative regulator of T cell activation. J Clin Invest. 2006 Oct;116(10):2817-26. PMID:17016562 doi:10.1172/JCI25673
↑ Wiesmann C, Katschke KJ, Yin J, Helmy KY, Steffek M, Fairbrother WJ, McCallum SA, Embuscado L, DeForge L, Hass PE, van Lookeren Campagne M. Structure of C3b in complex with CRIg gives insights into regulation of complement activation. Nature. 2006 Nov 9;444(7116):217-20. Epub 2006 Oct 15. PMID:17051150 doi:10.1038/nature05263
↑ Wen Y, Ouyang Z, Schoonooghe S, Luo S, De Baetselier P, Lu W, Muyldermans S, Raes G, Zheng F. Structural evaluation of a nanobody targeting complement receptor Vsig4 and its cross reactivity. Immunobiology. 2016 Nov 18. pii: S0171-2985(16)30436-3. doi:, 10.1016/j.imbio.2016.11.008. PMID:27889311 doi:http://dx.doi.org/10.1016/j.imbio.2016.11.008

1 Structural highlights
2 Function
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/5iml"

Categories: Camelidae | Homo sapiens | Large Structures | Wen Y

@@ Line 1: / Line 1: @@
 ==Nanobody targeting human Vsig4 in Spacegroup P212121==
-<StructureSection load='5iml' size='340' side='right' caption='[[5iml]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
+<StructureSection load='5iml' size='340' side='right'caption='[[5iml]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[5iml]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5IML OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5IML FirstGlance]. <br>
+<table><tr><td colspan='2'>[[5iml]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Camelidae Camelidae] and [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5IML OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5IML FirstGlance]. <br>
-</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5imk|5imk]], [[5imm|5imm]], [[5imo|5imo]]</td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.8&#8491;</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=5iml FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5iml OCA], [http://pdbe.org/5iml PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5iml RCSB], [http://www.ebi.ac.uk/pdbsum/5iml PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5iml ProSAT]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5iml FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5iml OCA], [https://pdbe.org/5iml PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5iml RCSB], [https://www.ebi.ac.uk/pdbsum/5iml PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5iml ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/VSIG4_HUMAN VSIG4_HUMAN]] Phagocytic receptor, strong negative regulator of T-cell proliferation and IL2 production. Potent inhibitor of the alternative complement pathway convertases.<ref>PMID:17016562</ref> <ref>PMID:17051150</ref>
+[https://www.uniprot.org/uniprot/VSIG4_HUMAN VSIG4_HUMAN] Phagocytic receptor, strong negative regulator of T-cell proliferation and IL2 production. Potent inhibitor of the alternative complement pathway convertases.<ref>PMID:17016562</ref> <ref>PMID:17051150</ref>
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 22: / Line 22: @@
 __TOC__
 </StructureSection>
-[[Category: Wen, Y]]
+[[Category: Camelidae]]
-[[Category: Complement receptor]]
+[[Category: Homo sapiens]]
-[[Category: Immune system]]
+[[Category: Large Structures]]
-[[Category: Nanobody]]
+[[Category: Wen Y]]
-[[Category: Vsig4 crig]]

5iml

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Current revision

Nanobody targeting human Vsig4 in Spacegroup P212121

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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