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Construction of Histidine-Enriched Shark IgNAR Variable Domain Antibody Libraries for the Isolation of pH-Sensitive vNAR Fragments

Methods in Molecular Biology, 2018
The adaptive immune system of sharks comprises a heavy chain-only antibody isotype, referred to as immunoglobulin new antigen receptor (IgNAR). Antigen binding in case of IgNAR antibodies is mediated by a single variable domain (vNAR). Due to their inherent beneficial biophysical properties, such as small size and high thermal stability combined with a
Doreen Könning   +2 more
exaly   +3 more sources

In vitro improvement of a shark IgNAR antibody by Qβ replicase mutation and ribosome display mimics in vivo affinity maturation

Immunology Letters, 2006
We have employed a novel mutagenesis system, which utilizes an error-prone RNA dependent RNA polymerase from Qbeta bacteriophage, to create a diverse library of single domain antibody fragments based on the shark IgNAR antibody isotype. Coupling of these randomly mutated mRNA templates directly to the translating ribosome allowed in vitro selection of ...
VÍCTOR A Streltsov, Stewart D Nuttall
exaly   +3 more sources

Rapid isolation of IgNAR variable single-domain antibody fragments from a shark synthetic library

Molecular Immunology, 2007
The immunoglobulin isotype IgNAR (Novel Antigen Receptor) was discovered in the serum of the nurse shark (Ginglymostoma cirratum) and wobbegong shark (Orectolobus maculates) as a homodimer of two protein chains, each composed of a single variable domain (V) domain and five constant domains.
Cui-Ying, Shao   +2 more
openaire   +2 more sources

Variable domain antibodies specific for viral hemorrhagic septicemia virus (VHSV) selected from a randomized IgNAR phage display library

Fish and Shellfish Immunology, 2013
Phage display libraries are used to screen for nucleotide sequences that encode immunoglobulin variable (V) regions that are specific for a target antigen. We previously constructed an immunoglobulin new antigen receptor (IgNAR) phage display library.
Maki Ohtani   +2 more
exaly   +4 more sources

Isolation of a pH-Sensitive IgNAR Variable Domain from a Yeast-Displayed, Histidine-Doped Master Library

Marine Biotechnology, 2016
In recent years, engineering of pH-sensitivity into antibodies as well as antibody-derived fragments has become more and more attractive for biomedical and biotechnological applications. Herein, we report the isolation of the first pH-sensitive IgNAR variable domain (vNAR), which was isolated from a yeast-displayed, semi-synthetic master library.
Doreen, Könning   +6 more
openaire   +2 more sources

Construction of an Artificially Randomized IgNAR Phage Display Library: Screening of Variable Regions that Bind to Hen Egg White Lysozyme

Marine Biotechnology, 2012
To develop a multi-antigen-specific immunoglobulin new antigen receptor (IgNAR) variable (V) region phage display library, CDR3 in the V region of IgNAR from banded houndshark (Triakis scyllium) was artificially randomized, and clones specific for hen egg white lysozyme (HEL) were obtained by the biopanning method.
Maki Ohtani   +2 more
exaly   +3 more sources

Monoclonal Antibodies for the Identification and Purification of vNAR Domains and IgNAR Immunoglobulins from the Horn Shark Heterodontus francisci

Hybridoma, 2011
In addition to conventional antibodies, cartilaginous fish have evolved a distinctive type of immunoglobulin, designated as IgNAR, which lacks the light polypeptide chains and is composed entirely by heavy chains. IgNAR molecules can be manipulated by molecular engineering to produce the variable domain of a single heavy chain polypeptide (vNARs ...
Karla, Juarez   +6 more
openaire   +2 more sources

Selection and characterization of naturally occurring single-domain (IgNAR) antibody fragments from immunized sharks by phage display

Molecular Immunology, 2003
The novel immunoglobulin isotype novel antigen receptor (IgNAR) is found in cartilaginous fish and is composed of a heavy-chain homodimer that does not associate with light chains. The variable regions of IgNAR function as independent domains similar to those found in the heavy-chain immunoglobulins of Camelids. Here, we describe the successful cloning
Helen, Dooley   +2 more
openaire   +2 more sources

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

Immunogenetics, 2002
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, found in both transmembrane and secretory forms, is a dimer of heavy chains with no associated light chains, with each chain of the dimer having a single free and flexible V ...
Marilyn Diaz   +2 more
exaly   +3 more sources

IgNAR

2008
openaire   +1 more source

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