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Cellular Analysis

Studies of protein properties, expression, transport, degradation and their interactions with other cellular systems are integral to biomedical research, drug discovery and developmental biology. Eukaryotic proteins function in signaling pathways, metabolism, structure, adhesion, cell movement, active and passive transport, DNA repair, viral disease mechanisms, the immune system, fertilization, differentiation, epigenetics, cancer and the cell division cycle.

For efficient analysis of cellular protein interactions and expression, target genes are often engineered into reporter systems, and then expressed in cells as recombinant fusion proteins. Reporter gene characteristics are chosen to enable downstream in vitroor in vivo method applications. This commonly used and widely successful strategy can facilitate applications such as flow cytometry, cell sorting, in vitro or in vivo imaging, proteomic microarray, cell-based microarray, SDS-PAGE gel electrophoresis, Western blot, quantitative affinity purification followed by mass spectrometry (q-AP-MS), pulse-chase and receptor internalization assays. In particular, improved reporter systems in conjunction with optical imaging technical advances are pushing the frontiers of fluorescence imaging applications.

New England Biolabs offers an innovative technology for studying the function and localization of proteins in living and fixed cells. Covalent protein labeling offers simplicity and versatility to the imaging of mammalian proteins in live cells, as well as the ability to capture proteins in vitro. A single genetic construct generates a fusion protein which, when covalently attached to a variety of fluorophores, biotin or beads, provides a powerful tool for studying protein dynamics. In the first system, the protein is labeled by a self-labeling fusion protein; SNAP-tag® or CLIP-tag™.

SNAP-tag® is a registered trademark of New England Biolabs, Inc.

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Cellular Analysis includes these areas of focus:
Cell Imaging
SNAP Surface
CLIP Surface
SNAP Companion
CLIP Cell
SNAP Cell
In vivo Imaging
Protein Localization
Pulse Chase
Receptor Internalization
FAQs for Cellular Analysis
Protocols for Cellular Analysis
Application Notes for Cellular Analysis
    Publications related to Cellular Analysis
  1. Reuter, W.H., Masuch, T., Ke, N., Lenon, M., Radzinski, M., Van Loi, V., Ren, G., Riggs, P., Antelmann, H., Reichmann, D., Leichert, L.I., Berkmen, M 2019. Utilizing redox-sensitive GFP fusions to detect in vivo redox changes in a genetically engineered prokaryote Redox Biol. 26, PubMedID: 31450103, DOI: 10.1016/j.redox.2019.101280
  2. Maffei, M., Morelli, C., Graham, E., Patriarca, S., Donzelli, L., Doleschall, B., de Castro, Reis, F., Nocchi, L., Chadick, C.H., Reymond, L., Correa, I.R., Jr., Johnsson, K., Hackett, J.A., Heppenstall, P.A 2019. A ligand based system for receptor specific delivery of proteins Sci Rep. 9(1), PubMedID: 31844114, DOI: 10.1038/s41598-019-55797-1
  3. Carpinone, E.M., Li, Z., Mills, M.K., Foltz, C., Brannon, E.R., Carlow, C.K.S., Starai, V.J. 2018. Identification of putative effectors of the Type IV secretion system from the Wolbachia endosymbiont of Brugia malayi PLoS One. 13 (9), PubMedID: 30261054, DOI: 10.1371/journal.pone.0204736
  4. Ke, N., Landgraf, D., Paulsson, J. and Berkmen, M. 2016. Visualization of Periplasmic and Cytoplasmic Proteins with a Self-Labeling Protein Tag. J Bacteriol. Jan 19;198(7), PubMedID: 26787765, DOI:
  5. Domoszlai T, Martincuks A, Fahrenkamp D, Schmitz-Van de Leur H, Küster A, Müller-Newen G 2014. Consequences of the disease-related L78R mutation for dimerization and activity of STAT3 J Cell Sci. 127(Pt 9), PubMedID: 24569879, DOI: 10.1242/jcs.137422
  6. Johnson K. 2008. SNAP-tag Technologies: Novel tools to study protein function NEB Expressions . 3.3 , PubMedID: , DOI:
Legal Information

This product is covered by one or more patents, trademarks and/or copyrights owned or controlled by New England Biolabs, Inc (NEB).

While NEB develops and validates its products for various applications, the use of this product may require the buyer to obtain additional third party intellectual property rights for certain applications.

For more information about commercial rights, please contact NEB's Global Business Development team at gbd@neb.com.

This product is intended for research purposes only. This product is not intended to be used for therapeutic or diagnostic purposes in humans or animals.


Videos

  1. fluorescent_COS7_thumb

    Fluorescent Labeling of COS-7 Expressing SNAP-tag Fusion Proteins for Live Cell Imaging

    Watch as Chris Provost, of New England Biolabs, performs fluorescent imaging of live COS-7 cells expressing SNAP-tag® fusion proteins.

  2. SNAPtag_Tutorial_thumb

    SNAP-tag Overview Tutorial

    View an interactive tutorial explaining the mechanism of our SNAP-tag® technologies and reagents available for researchers wishing to study the function and localization of proteins in live or fixed cells.