Green-fluorescent protein from the bioluminescent jellyfish Clytia gregaria: cDNA cloning, expression, and characterization of novel recombinant protein

Тип публикации: статья из журнала

Год издания: 2010

Идентификатор DOI: 10.1039/c0pp00023j

Ключевые слова: fish protein, green fluorescent protein, phialidin, photoprotein, recombinant protein, amino acid sequence, animal, article, chemistry, CHO cell, Cricetulus, fluorescence resonance energy transfer, genetics, hamster, metabolism, molecular genetics, Scyphozoa, sequence alignment, spectrofluorometry, Amino Acid Sequence, Animals, CHO Cells, Cricetinae, Cricetulus, Fish Proteins, Fluorescence Resonance Energy Transfer, Green Fluorescent Proteins, Luminescent Proteins, Molecular Sequence Data, Recombinant Proteins, Scyphozoa, Sequence Alignment, Spectrometry, Fluorescence, Aequorea victoria, Clytia gregaria, Hydrozoa, Mammalia, Scyphozoa

Аннотация: The bioluminescent systems of many marine organisms are comprised of two proteins - the Ca2+-regulated photoprotein and green-fluorescent protein (GFP). This work reports the cloning of the full-size cDNA encoding GFP (cgreGFP) from jellyfish Clytia gregaria, its expression and properties of the recombinant protein. The overall degree of identity between the amino acid sequence of the novel cgreGFP and the sequence of GFP (avGFP) from Aequorea victoria is 42% (similarity - 64%) despite these GFPs originating from jellyfish that both belong to the same class, Hydrozoa. However although the degree of identity is low, three residues, Ser-Tyr-Gly, which form the chromophore are identical in both GFPs. The cgreGFP displayed two absorption peaks at 278 and 485 nm, and the fluorescence maximum at 500 nm. The fluorescence quantum yield was determined to be 0.86, the brightness to be 54 mM(-1) cm(-1). For the first time we have also demonstrated an efficient radiationless energy transfer in vitro between clytin and cgreGFP in solution at micromolar concentrations. The cgreGFP may be a useful intracellular fluorescent marker, as it was able to be expressed in mammalian cells.

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Издание

Журнал: PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES

Выпуск журнала: Vol. 9, Is. 6

Номера страниц: 757-765

ISSN журнала: 1474905X

Место издания: CAMBRIDGE

Издатель: ROYAL SOC CHEMISTRY

Авторы

  • Markova S.V. (Siberian Federal University)
  • Burakova L.P. (Photobiology Lab,Institute of Biophysics,Russian Academy of Sciences Siberian Branch)
  • Frank L.A. (Siberian Federal University)
  • Korostileva K.A. (Siberian Federal University)
  • Vysotski E.S. (Photobiology Lab,Institute of Biophysics,Russian Academy of Sciences Siberian Branch)
  • Golz S. (Bayer Schering Pharma AG,BSP-GDD-GTR-TD-GT)

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