TraA, an essential representative of the Dtr system, is the strand transferase responsible for nicking the oriT and is a component of the relaxosome (Cho and Winans 2007).
TrbE, an essential representative of the Mpf system, contains a Walker type-A nucleoside triphosphate binding domain and is distantly related to VirB4 of the T4SS involved in plant virulence (Li et al. 1998, 1999), whereas TrbK, which is not essential for transfer, is a short protein and is involved in entry exclusion (Cho et al. 2009).
Perfluorooctanesulfonate (PFOS), perfluorooctanoic acid (PFOA), and their salts are the most essential representative PFCs and are widely used in fire-fighting foams, lubricants, metal spray plating and detergent products, inks, varnishes, coating formulations (for walls, furniture, carpeting, and food packaging), waxes, and water and oil repellents for leather, paper, and textiles [ 6– 8].
Many pathologies of cartilaginous and tendinous structures, which are essential representatives of these minimal perfused tissues, are understood as a result of a condition of chronic stress overdose, overburding their minimal regenerative capacity.
Hence, the database is an essential resource of representative and evidence-based data for studies in medical and health research, which may play a valuable role in health policy.
Or is it an essential safety valve for a representative government?
The solution comparison or the selection of more "representative" solutions is an essential issue in many-objective optimization.
Even though finding an appropriate model to predict the variations is important in compositional grading study, an essential step remains as characterization of representative fluid.
In GH19 family, Thr/Ser120 (throughout this paper, residues are labelled according to numbering of the representative structure) plays an essential role in the enzymatic mechanism [46], being found in X-ray structures H-bonded with the presumed catalytic water molecule [20], [47].
This May, a doTerra representative named Lara held an Essential Oils 101 class at a barbecue restaurant in Waco, Texas.
"Go 2 School is very ambitious, but it is an essential and achievable initiative," said UNICEF Somalia Representative, Sikander Khan.
