The main field of our team interests is the researching of galaxy clusters as well as single nearby galaxies. The galaxies and galaxy clusters, being gravitationaly bound and reliably distinguishable systems, allow us to determine their global physical characteristics. At the same time they are integrated as elements into higher level spatial structures or systems. Therefore a primordial formation and subsequent evolution of galaxies and clusters may be largely determined by their location in the forming and evolving large-scale structure of the Universe. The study of structure of galaxies and galaxy clusters as a function of their membership in higher level systems provides important information on the process of evolution of inhomogeneities in the distribution of matter and on the related physical prosesses in the wide range of scales.