Contents

Moscow University Biological Sciences Bulletin

Vol. 76, No. 4, 2021

Review

The Molecular and Cellular Mechanisms of Heart Pacemaker Development in Vertebrates

V. S. Kuzmin and A. A. Kamensky p. 147  abstract

Nanoparticles in the Aquatic Environment: The Risks Associated with Them and the Possibilities of Their Mitigation with Microalgae

A. A. Gusev, O. V. Zakharova, I. A. Vasyukova, N. A. Evtushenko, S. G. Vasilieva, A. A. Lukyanov, E. S. Lobakova, E. V. Skripnikova and A. E. Solovchenko p. 165  abstract

Structure-Sweetness Relationship of Sweet Proteins: A Systematic Review on “Sweet Protein” Studies as a Sub-Group of “Sweetener” Investigations

E. Kashani-Amin, H. Faraji, S. Nouriyengejeh and A. Ebrahim-Habibi p. 175  abstract

Research Article

Role of the Nhp6 Protein in Nucleosome Unfolding by the FACT Factor

A. L. Sivkina, A. V. Feofanov, M. P. Kirpichnikov, M. S. Akhtar and V. M. Studitsky p. 191  abstract

The Effects of Indole on Intracellular Polyamine Content and Antibiotic Susceptibility of Escherichia coli

L. Y. Nesterova, A. V. Akhova and A. G. Tkachenko p. 196  abstract

Toxic Effects of Microplastics on Culture Scenedesmus quadricauda: Interactions between Microplastics and Algae

A. M. Lazareva, V. I. Ipatova, O. V. Il’ina, D. A. Todorenko, D. N. Matorin and A. A. Baizhumanov p. 202  abstract

Features of Using 2,6-Dichlorophenolindophenol as An Electron Acceptor in Photosynthesis Studies

A. V. Loktyushkin, E. R. Lovyagina and B. K. Semin p. 210  abstract

Effect of Phytohormones on the Expression of USP Genes in Arabidopsis thaliana Seedlings

D. S. Gorshkova and E. S. Pojidaeva p. 216  abstract

Morphofunctional Characteristics of Fibroblasts of the Papillary and Reticular Layers of Human Skin Dermis

O. S. Rogovaya, A. O. Zupnik, L. Sh. Izmailova and E. A. Vorotelyak p. 225  abstract

Actinobiota of the Rhizosphere of Transgenic Tobacco Plants with Increased Salt Tolerance

I. G. Shirokikh and Ya. I. Nazarova p. 232  abstract

Opinion

Reflections of a Pessimistic Gerontologist or Why We Still Do Not Live 1000 Years

A. N. Khokhlov p. 239  abstract

Short Communications

Effect of Low-Temperature Atmospheric Pressure Plasma on Paramecium caudatum Cell Culture

G. A. Gruzdev, O. V. Karpukhina, V. G. Yakunin, A. N. Inozemtsev, V. P. Savinov, V. Yu. Timoshenko and A. A. Kamensky p. 244  abstract

Inhibition of Ascorbate Autoxidation by New Strains of Lactic Acid Bacteria

A. I. Klimko, T. A. Cherdyntseva, A. I. Netrusov and A. L. Bryukhanov p. 249  abstract