5H2B image
Entry Detail
PDB ID:
5H2B
Keywords:
Title:
Structure of a novel antibody G196
Biological Source:
Source Organism:
PDB Version:
Deposition Date:
2016-10-14
Release Date:
2017-03-22
Method Details:
Experimental Method:
Resolution:
2.00 Å
R-Value Free:
0.28
R-Value Work:
0.21
R-Value Observed:
0.21
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:G196 antibody Heavy chain
Chain IDs:A
Chain Length:218
Number of Molecules:1
Biological Source:Mus musculus
Polymer Type:polypeptide(L)
Description:G196 antibody Light chain
Chain IDs:B
Chain Length:214
Number of Molecules:1
Biological Source:Mus musculus
Primary Citation
G196 epitope tag system: a novel monoclonal antibody, G196, recognizes the small, soluble peptide DLVPR with high affinity.
Sci Rep 7 43480 43480 (2017)
PMID: 28266535 DOI: 10.1038/srep43480

Abstact

The recognition specificity of monoclonal antibodies (mAbs) has made mAbs among the most frequently used tools in both basic science research and in clinical diagnosis and therapies. Precise determination of the epitope allows the development of epitope tag systems to be used with recombinant proteins for various purposes. Here we describe a new family of tag derived from the epitope recognized by a highly specific mAb G196. The minimal epitope was identified as the five amino acid sequence Asp-Leu-Val-Pro-Arg. Permutation analysis was used to characterize the binding requirements of mAb G196, and the variable regions of the mAb G196 were identified and structurally analyzed by X-ray crystallography. Isothermal titration calorimetry revealed the high affinity (Kd = 1.25 nM) of the mAb G196/G196-epitope peptide interaction, and G196-tag was used to detect several recombinant cytosolic and nuclear proteins in human and yeast cells. mAb G196 is valuable for developing a new peptide tagging system for cell biology and biochemistry research.

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