McLennan, A G The cyanobacterium Anabaena flos-aquae possesses diadenosine 5',5'''-P1,P4-tetraphosphate (Ap4A) phosphorylase activity. [electronic resource] - Biochemical Society transactions Aug 1996 - 417S p. digital Publication Type: Comparative Study; Journal Article ISSN: 0300-5127 Standard No.: 10.1042/bst024417s doi Subjects--Topical Terms: Amino Acid SequenceAnabaena--enzymologyCyanobacteria--enzymologyMolecular Sequence DataNucleotidyltransferases--geneticsSaccharomyces cerevisiae--enzymologySequence Homology, Amino AcidSpecies Specificity