5fec: Difference between revisions
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==Crystal structure of 3BNC60 Fab germline precursor in complex with 426c.TM4deltaV1-3 gp120== | ==Crystal structure of 3BNC60 Fab germline precursor in complex with 426c.TM4deltaV1-3 gp120== | ||
<StructureSection load='5fec' size='340' side='right' caption='[[5fec]], [[Resolution|resolution]] 3.17Å' scene=''> | <StructureSection load='5fec' size='340' side='right'caption='[[5fec]], [[Resolution|resolution]] 3.17Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[5fec]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/9hiv1 9hiv1] and [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5FEC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5FEC FirstGlance]. <br> | <table><tr><td colspan='2'>[[5fec]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/9hiv1 9hiv1] and [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5FEC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5FEC FirstGlance]. <br> | ||
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</div> | </div> | ||
<div class="pdbe-citations 5fec" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 5fec" style="background-color:#fffaf0;"></div> | ||
==See Also== | |||
*[[Gp120 3D structures|Gp120 3D structures]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
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</StructureSection> | </StructureSection> | ||
[[Category: Human]] | [[Category: Human]] | ||
[[Category: Large Structures]] | |||
[[Category: Bjorkman, P J]] | [[Category: Bjorkman, P J]] | ||
[[Category: Scharf, L]] | [[Category: Scharf, L]] | ||
Revision as of 19:10, 11 December 2019
Crystal structure of 3BNC60 Fab germline precursor in complex with 426c.TM4deltaV1-3 gp120Crystal structure of 3BNC60 Fab germline precursor in complex with 426c.TM4deltaV1-3 gp120
Structural highlights
Publication Abstract from PubMedEfforts to elicit broadly neutralizing antibodies (bNAbs) against HIV-1 require understanding germline bNAb recognition of HIV-1 envelope glycoprotein (Env). The VRC01-class bNAb family derived from the VH1-2*02 germline allele arose in multiple HIV-1-infected donors, yet targets the CD4-binding site on Env with common interactions. Modified forms of the 426c Env that activate germline-reverted B cell receptors are candidate immunogens for eliciting VRC01-class bNAbs. We present structures of germline-reverted VRC01-class bNAbs alone and complexed with 426c-based gp120 immunogens. Germline bNAb-426c gp120 complexes showed preservation of VRC01-class signature residues and gp120 contacts, but detectably different binding modes compared to mature bNAb-gp120 complexes. Unlike typical antibody-antigen interactions, VRC01-class germline antibodies exhibited preformed antigen-binding conformations for recognizing immunogens. Affinity maturation introduced substitutions increasing induced-fit recognition and electropositivity, potentially to accommodate negatively-charged complex-type N-glycans on gp120. These results provide general principles relevant to the unusual evolution of VRC01-class bNAbs and guidelines for structure-based immunogen design. Structural basis for germline antibody recognition of HIV-1 immunogens.,Scharf L, West AP, Sievers SA, Chen C, Jiang S, Gao H, Gray MD, McGuire AT, Scheid JF, Nussenzweig MC, Stamatatos L, Bjorkman PJ Elife. 2016 Mar 21;5. pii: e13783. doi: 10.7554/eLife.13783. PMID:26997349[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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