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Freshwater sponges in Estonia: genetic and morphological identification
TLDR
The DNA analysis showed the presence of three spongillid species in Estonia: Ephydatia fluviatilis, EphYDatia muelleri, and Spongilla lacustris.
Evolution of the 2′-5′-Oligoadenylate Synthetase Family in Eukaryotes and Bacteria
TLDR
It is suggested that the original function of OAS may differ from its function in the interferon system, and that this original function is preserved even in OAS genes that code for proteins, which do not have 2′-5′-oligoadenylate synthetase activity.
Molecular identification, characterization and distribution of freshwater sponges (Porifera: Spongillidae) in Estonia
TLDR
This study is the first comprehensive survey of the distribution of freshwater sponges in the rivers of Estonia and showed that Ephydatia fluviatilis was the most widely distributed species followed by Spongilla lacustris and EphYDatia muelleri.
ATP N-glycosidase - a novel ATP-converting activity from a marine sponge Axinella polypoides.
TLDR
The biochemical properties of ATP N-glycosidase show similarities with previously described adenine-specific nucleosidases; however, the pattern of its biochemical characteristics does not match with that of any of those enzymes.
Identification of the reaction products of (2'-5')oligoadenylate synthetase in the marine sponge.
TLDR
It is proposed that the (2'-5')A system is involved in a cytokine-mediated pathway and/or in a protection system against viruses, present in the marine environment.
Natural Occurrence of 2′,5′-Linked Heteronucleotides in Marine Sponges
TLDR
It is demonstrated that OASs from the marine sponges Thenea muricata and Chondrilla nucula are able to catalyze in vivo synthesis of 2-5A as well as the synthesis of a series of 2′,5′-linked heteronucleotides which accompanied high levels of 2,000-diadenylates.
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