Selleck SB-715992 Fischerella muscicola UTEX 1829 [GenBank: AB075984], Fischerella sp. PCC 9339 [IMG Gene ID: 2517062088], Fischerella
sp. ATCC 43239 [GenBank: KJ768872], Fischerella ambigua UTEX 1930 [GenBank: KJ768871], Fischerella muscicola SAG 1427-1 [GenBank: AB075985], Fischerella sp. PCC 9431 [IMG Gene ID: 2512976007], Hapalosiphon welwitschii UH strain IC-52-3 [GenBank: KJ767019], Westiella intricata UH strain HT-29-1 [GenBank: KJ767016], Hapalosiphon hibernicus BZ-3-1 [GenBank: EU151900], Fischerella sp. CENA 19 [GenBank: AY039703], Fischerella sp. JSC-11 [GenBank: HM636645], Fischerella thermalis PCC 7521 [GenBank: AB075987], Fischerella muscicola PCC 7414 [GenBank: AB075986], Chlorogloeopsis fritschii PCC 6912 [GenBank: AB093489], FK228 ic50 Chlorogloeopsis fritschii PCC 9212 [GenBank: AB075982], Fischerella sp. PCC 9605 [IMG Gene ID: 2516144612], Mastigocladopsis repens PCC 10914 [GenBank: AJ544079], Mastigocoleus testarum BC 008 [IMG Gene ID: 2264826627] and Synechocystis sp. PCC 6803 [GenBank: NR_074311]. *indicates hpi/amb/wel gene cluster was identified in these strains. ^ indicates these strains are known producers of hapalindole-family of natural products. Synechocystis sp.
PCC 6803 was used as the outgroup. Phylogenetic trees were constructed using the Geneious PAK5 Tree Builder program, using the neighbour-joining method. Numbers at each branch point are the bootstrap values for percentages of 100 replicate Sapitinib cost trees. Tryptophan biosynthesis Five of the six essential genes required for the biosynthesis of L-tryptophan from chorismate, which are paralogues of trpABCDE (T1-5), were identified in all nine biosynthetic gene clusters [14]. The sixth gene, trpF, a phosphoribosylanthranilate isomerase gene, is located outside of the gene cluster consistently
in all strains analyzed. Analysis of the genomes sequenced in this study revealed some cyanobacterial strains also contain a second set of genes which encode for tryptophan biosynthesis, however, other strains only contain the tryptophan genes within the gene cluster for tryptophan biosynthesis. Another gene common to all nine gene clusters is C2, a DAHP (3-deoxy-D-arabinoheptulosonate-7-phosphate) synthase gene, which encodes an enzyme regulating the biosynthesis of DAHP from the condensation of PEP (phosphoenolpyruvate) and erythrose-4-phosphate, the first enzymatic step of aromatic amino acid synthesis [15]. Indole-isonitrile biosynthesis A signature chemical feature of the hapalindole family of alkaloids is the presence of an isonitrile functional group.
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