HEAT SHOCK PROTEINS EXPRESSION IN ASSOCIATION WITH THERMAL STRESS IN CATTLE BREEDS

Sabina A. Neculai-Văleanu, M. Ciorpac, Mădălina A. Davidescu, Bianca M. Mădescu, Ioana Poroşnicu, A.C. Matei, Şt. Creangă

Abstract
    This paper reviews the most important aspects of the literature on heat shock proteins specific to the genus Bos taurus. Heat shock proteins (HSPs) are unique proteins that are formed when cells are exposed briefly to temperatures beyond their normal temperature of development. Based on molecular weight heat shock proteins are grouped into families: low molecular weight heat shock proteins, homologous proteins GroES or HSP10 (~ 10 kDa), DnaJ-homologous proteins or HSP40 (~ 40 kDa), GroEL-proteins homologous or HSP60 (~ 60 kDa), homologous proteins DnaK or HSP70 (~ 70 kDa), proteins HptG or HSP90 homologues (~ 90 kDa), and ATP Clp-dependent proteases (HSP100) (Oyeyemi O Ajayi et. Al., 2018). In recent years, global warming has become a major concern for the agricultural sector. Heat stress became a topical issue and a major cause of low fertility in dairy cattle, the impact being observed even in northern European countries.