Путинцева Екатерина Викторовна


Аспирант (Лаборатория геномики адаптивного иммунитета)

Тел.: +7 (499) 742-81-22

Эл. почта: e.putintseva@yandex.ru

Избранные публикации

  1. Sarkisyan K.S., Bolotin D.A., Meer M.V., Usmanova D.R., Mishin A.S., Sharonov G.V., Ivankov D.N., Bozhanova N.G., Baranov M.S., Soylemez O., Bogatyreva N.S., Vlasov P.K., Egorov E.S., Logacheva M.D., Kondrashov A.S., Chudakov D.M., Putintseva E.V., Mamedov I.Z., Tawfik D.S., Lukyanov K.A., Kondrashov F.A. (2016). Local fitness landscape of the green fluorescent protein. Nature 533 (7603), 397–401 [+]

    Fitness landscapes depict how genotypes manifest at the phenotypic level and form the basis of our understanding of many areas of biology, yet their properties remain elusive. Previous studies have analysed specific genes, often using their function as a proxy for fitness, experimentally assessing the effect on function of single mutations and their combinations in a specific sequence or in different sequences. However, systematic high-throughput studies of the local fitness landscape of an entire protein have not yet been reported. Here we visualize an extensive region of the local fitness landscape of the green fluorescent protein from Aequorea victoria (avGFP) by measuring the native function (fluorescence) of tens of thousands of derivative genotypes of avGFP. We show that the fitness landscape of avGFP is narrow, with 3/4 of the derivatives with a single mutation showing reduced fluorescence and half of the derivatives with four mutations being completely non-fluorescent. The narrowness is enhanced by epistasis, which was detected in up to 30% of genotypes with multiple mutations and mostly occurred through the cumulative effect of slightly deleterious mutations causing a threshold-like decrease in protein stability and a concomitant loss of fluorescence. A model of orthologous sequence divergence spanning hundreds of millions of years predicted the extent of epistasis in our data, indicating congruence between the fitness landscape properties at the local and global scales. The characterization of the local fitness landscape of avGFP has important implications for several fields including molecular evolution, population genetics and protein design.

    ID:1529
  2. Britanova O.V., Bochkova A.G., Staroverov D.B., Fedorenko D.A., Bolotin D.A., Mamedov I.Z., Turchaninova M.A., Putintseva E.V., Kotlobay A.A., Lukyanov S., Novik A.A., Lebedev Y.B., Chudakov D.M. (2012). First autologous hematopoietic SCT for ankylosing spondylitis: a case report and clues to understanding the therapy. Bone marrow transplantation , ID:732
  3. Shemiakina I.I., Ermakova G.V., Cranfill P.J., Baird M.A., Evans R.A., Souslova E.A., Staroverov D.B., Gorokhovatsky A.Y., Putintseva E.V., Gorodnicheva T.V., Chepurnykh T.V., Strukova L., Lukyanov S., Zaraisky A.G., Davidson M.W., Chudakov D.M., Shcherbo D. (2012). A monomeric red fluorescent protein with low cytotoxicity. Nat Commun 3, 1204 [+]

    Multicolour labelling with fluorescent proteins is frequently used to differentially highlight specific structures in living systems. Labelling with fusion proteins is particularly demanding and is still problematic with the currently available palette of fluorescent proteins that emit in the red range due to unsuitable subcellular localization, protein-induced toxicity and low levels of labelling efficiency. Here we report a new monomeric red fluorescent protein, called FusionRed, which demonstrates both high efficiency in fusions and low toxicity in living cells and tissues.

    ID:832