Construction, characterization and crystal structure of a fluorescent single-chain Fv chimera
Abstract
In vitro display technologies based on phage and yeast have a successful history of selecting single-chain variable fragment (scFv) antibodies against various targets. However, single-chain antibodies are often unstable and poorly expressed in Escherichia coli. Here, we explore the feasibility of converting scFv antibodies to an intrinsically fluorescent format by inserting the monomeric, stable fluorescent protein named thermal green, between the light- and heavy-chain variable regions. Our results show that the scTGP format maintains the affinity and specificity of the antibodies, improves expression levels, allows one-step fluorescent assay for detection of binding and is a suitable reagent for epitope binning. We also report the crystal structure of an scTGP construct that recognizes phosphorylated tyrosine on FcεR1 receptor of the allergy pathway.
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Tennessee, Knoxville, TN (United States)
- ARUP Labs., Salt Lake City, UT (United States); Univ. of Tennessee, Knoxville, TN (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Specifica Inc., Santa Fe, NM (United States)
- Harvard Univ., Cambridge, MA (United States)
- Univ. of Tennessee, Knoxville, TN (United States)
- Missouri State Univ., Springfield, MO (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Specifica Inc., Santa Fe, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1768545
- Report Number(s):
- LA-UR-20-22202
Journal ID: ISSN 1741-0126
- Grant/Contract Number:
- 89233218CNA000001; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Protein Engineering, Design and Selection
- Additional Journal Information:
- Journal Volume: 34; Journal ID: ISSN 1741-0126
- Publisher:
- Oxford University Press
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 59 BASIC BIOLOGICAL SCIENCES; biological science; intrinsically fluorescent scFv antibodies; crystal structure; soluble scFv antibodies; improved expression and functionality
Citation Formats
Velappan, Nileena, Close, Devin, Hung, Li-Wei, Naranjo, Leslie, Hemez, Colin, McCullough, Donna K., DeVore, Natasha, Lillo, Antonietta Maria, and Bradbury, Andrew R. M. Construction, characterization and crystal structure of a fluorescent single-chain Fv chimera. United States: N. p., 2021.
Web. doi:10.1093/protein/gzaa029.
Velappan, Nileena, Close, Devin, Hung, Li-Wei, Naranjo, Leslie, Hemez, Colin, McCullough, Donna K., DeVore, Natasha, Lillo, Antonietta Maria, & Bradbury, Andrew R. M. Construction, characterization and crystal structure of a fluorescent single-chain Fv chimera. United States. https://doi.org/10.1093/protein/gzaa029
Velappan, Nileena, Close, Devin, Hung, Li-Wei, Naranjo, Leslie, Hemez, Colin, McCullough, Donna K., DeVore, Natasha, Lillo, Antonietta Maria, and Bradbury, Andrew R. M. Mon .
"Construction, characterization and crystal structure of a fluorescent single-chain Fv chimera". United States. https://doi.org/10.1093/protein/gzaa029. https://www.osti.gov/servlets/purl/1768545.
@article{osti_1768545,
title = {Construction, characterization and crystal structure of a fluorescent single-chain Fv chimera},
author = {Velappan, Nileena and Close, Devin and Hung, Li-Wei and Naranjo, Leslie and Hemez, Colin and McCullough, Donna K. and DeVore, Natasha and Lillo, Antonietta Maria and Bradbury, Andrew R. M.},
abstractNote = {In vitro display technologies based on phage and yeast have a successful history of selecting single-chain variable fragment (scFv) antibodies against various targets. However, single-chain antibodies are often unstable and poorly expressed in Escherichia coli. Here, we explore the feasibility of converting scFv antibodies to an intrinsically fluorescent format by inserting the monomeric, stable fluorescent protein named thermal green, between the light- and heavy-chain variable regions. Our results show that the scTGP format maintains the affinity and specificity of the antibodies, improves expression levels, allows one-step fluorescent assay for detection of binding and is a suitable reagent for epitope binning. We also report the crystal structure of an scTGP construct that recognizes phosphorylated tyrosine on FcεR1 receptor of the allergy pathway.},
doi = {10.1093/protein/gzaa029},
journal = {Protein Engineering, Design and Selection},
number = ,
volume = 34,
place = {United States},
year = {Mon Feb 15 00:00:00 EST 2021},
month = {Mon Feb 15 00:00:00 EST 2021}
}
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