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DBpedia 2015-10

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Matches in DBpedia 2015-10 for { ?s ?p "The Avian HBV RNA encapsidation signal epsilon (AHBV_epsilon) is an RNA structure that is shown to facilitate encapsidation of the pregenomic RNA required for replication. There are two main classes of encapsidation signals in avian HBV viruses - Duck hepatitis B virus (DHBV) and Heron hepatitis B virus (HHBV) like. DHBV is used as a model to understand human HBV. Although studies have shown that the HHBV epsilon has less pairing in the upper stem than DHBV, this pairing is not absolutely required for DHBV infection in ducks. DHBV epsilon consists of a stem structure, a bulge and an apical loop (Fig. 1). The RNA structure was determined by chemical probing, NMR analysis and by mutagenesis.HHBV epsilon also consists of a stem structure, a bulge and an apical loop (Fig. 2). The RNA structure has been determined by chemical probing and by mutagenesis. However, it has less base pairing in the upper stem than DHBV epsilon. Recent NMR analysis of both the HHBV and DHBV epsilon have shown that the apical loop to be capped by a stable well-structured UGUU tetraloop.In the Rfam database a single covariation model (AHBV_epsilon box right) best discriminates between the true instances of the element in sequence databases and background. The secondary structure diagram is a computer generated view of the structure with highly conserved bases shown in red. It includes the major elements shown in Figures 1 and 2."@en }

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