Photoactive yellow protein and its chemical probes: An approach to protein labelling in living cells

Naresh Kumar, Yuichiro Hori, Kazuya Kikuchi

Research output: Contribution to journalReview articlepeer-review

6 Citations (Scopus)


Labelling technologies developed over the past few years have changed the way of looking at biomolecules and have made a considerable contribution to our understanding of the functions and regulation of dynamic biological processes. One of the robust technologies employed to image proteins in a cellular environment is based on the use of chemical tags and their fluorescent probes, which provides flexibility in developing probes with a wide range of synthetic fluorophores. A variety of chemical tags, ranging from short amino acid sequences to small proteins, have been employed to generate protein-labelling systems. One such chemical tag is the photoactive yellow protein (PYP)-tag, which is a small bacterial protein, developed for the selective labelling and imaging of proteins. Herein, we briefly discuss the protein-labelling system developed based on PYP-tag technology, with a focus on the design strategy for PYP-tag labelling probes and their applications in protein imaging.

Original languageEnglish
Pages (from-to)121-127
Number of pages7
JournalJournal of biochemistry
Issue number1
Publication statusPublished - Jan 1 2020
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Molecular Biology


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