Structural analysis, selection, and ontogeny of the shark new antigen receptor (IgNAR): identification of a new locus preferentially expressed in early development

M Diaz, RL Stanfield, AS Greenberg, MF Flajnik - Immunogenetics, 2002 - Springer
The new antigen receptor (IgNAR) family has been detected in all elasmobranch species so
far studied and has several intriguing structural and functional features. IgNAR protein …

Structure of a shark IgNAR antibody variable domain and modeling of an early‐developmental isotype

VA Streltsov, JA Carmichael, SD Nuttall - Protein science, 2005 - Wiley Online Library
The new antigen receptor (IgNAR) antibodies from sharks are disulphide bonded dimers of
two protein chains, each containing one variable and five constant domains. Three types of …

Maturation of shark single-domain (IgNAR) antibodies: evidence for induced-fit binding

RL Stanfield, H Dooley, P Verdino, MF Flajnik… - Journal of molecular …, 2007 - Elsevier
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 …

Somatic hypermutation of the new antigen receptor gene (NAR) in the nurse shark does not generate the repertoire: Possible role in antigen-driven reactions in the …

M Diaz, AS Greenberg… - Proceedings of the …, 1998 - National Acad Sciences
The new antigen receptor (NAR) gene in the nurse shark diversifies extensively by somatic
hypermutation. It is not known, however, whether NAR somatic hypermutation generates the …

Structural evidence for evolution of shark Ig new antigen receptor variable domain antibodies from a cell-surface receptor

VA Streltsov, JN Varghese… - Proceedings of the …, 2004 - National Acad Sciences
The Ig new antigen receptors (IgNARs) are single-domain antibodies found in the serum of
sharks. Here, we report 2.2-and 2.8-Å structures of the type 2 IgNAR variable domains 12Y-1 …

[HTML][HTML] Atypical antigen recognition mode of a shark immunoglobulin new antigen receptor (IgNAR) variable domain characterized by humanization and structural …

OV Kovalenko, A Olland, N Piché-Nicholas… - Journal of Biological …, 2013 - ASBMB
The immunoglobulin new antigen receptors (IgNARs) are a class of Ig-like molecules of the
shark immune system that exist as heavy chain-only homodimers and bind antigens by their …

Structural analysis of the nurse shark (new) antigen receptor (NAR): molecular convergence of NAR and unusual mammalian immunoglobulins

KH Roux, AS Greenberg, L Greene… - Proceedings of the …, 1998 - National Acad Sciences
We recently have identified an antigen receptor in sharks called NAR (n ew or n urse shark a
ntigen r eceptor) that is secreted by splenocytes but does not associate with Ig light (L) …

A novel “chimeric” antibody class in cartilaginous fish: IgM may not be the primordial immunoglobulin

AS Greenberg, AL Hughes, J Guo… - European journal of …, 1996 - Wiley Online Library
Using a degenerate oligonucleotide primer specific for immunoglobulin (Ig) constant type 1
(C‐1 set) domain genes, products were amplified by the reverse transcriptase‐polymerase …

First molecular and biochemical analysis of in vivo affinity maturation in an ectothermic vertebrate

H Dooley, RL Stanfield, RA Brady… - Proceedings of the …, 2006 - National Acad Sciences
The cartilaginous fish are the oldest phylogenetic group in which Igs have been found.
Sharks produce a unique Ig isotype, IgNAR, a heavy-chain homodimer that does not …

[HTML][HTML] Shark new antigen receptor (IgNAR): structure, characteristics and potential biomedical applications

SN Juma, X Gong, S Hu, Z Lv, J Shao, L Liu, G Chen - Cells, 2021 - mdpi.com
Shark is a cartilaginous fish that produces new antigen receptor (IgNAR) antibodies. This
antibody is identified with a similar human heavy chain but dissimilar sequences. The …