ASFV shares some similarities in genome structure and replication strategies with other families of large, nucleocytoplasmically replicating DNA viruses, including Iridoviridae, Mimiviridae, Poxviridae and Phycodnaviridae [ 1, 2].
Recently, a new group of invertebrate viruses, the Roniviridae, with a genetic structure and replication strategy similar to those of coronaviruses, has been described.
Inconsistent findings in factor structure and replication difficulties have limited the scope of development of the measure as a multi-dimensional tool.
Details on their structure and replication cycle are available elsewhere [7], [8], [9].
This genome structure and replication strategy is amenable to the construction of expression vectors.
ZAM, a retroelement from Drosophila melanogaster very similar in structure and replication cycle to mammalian retroviruses is highly site-specific.
However, the alphavirus genome structure and replication strategy is not readily amenable to the expression of more than one heterologous sequence.
The next topic was structure and replication of DNA, which led easily into the concept of the cell cycle and topics such as cell-cycle control and mitosis.
Although the exact relationship between chromatin structure and replication timing is not fully understood, early replication is a characteristic of 'accessible' and highly acetylated chromatin while late replication is a feature of heterochromatic domains and some repressed genes [ 28].
Our data revealed a correlation between origin structure and replication timing and we therefore wondered whether histone acetylation might modify replication timing by altering the chromatin architecture of replication origins.
