Family Search for PF13810 (DUF4185)

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PF13810 hits 27 sequences in PaperBLAST's database above the trusted cutoff. Showing hits to curated sequences only. Or see all hits or try another family.

NOTJ_ASPSM / E1ACQ5 Notoamide biosynthesis cluster protein J from Aspergillus sp. (strain MF297-2) (see 3 papers)
Aligns to 36:357 / 370 (87.0%), covers 95.5% of PF13810, 210.1 bits

• function: Part of the gene cluster that mediates the biosynthesis of notoamide, a fungal indole alkaloid that belongs to a family of natural products containing a characteristic bicyclo[2.2.2]diazaoctane core (PubMed:20722388). The first step of notoamide biosynthesis involves coupling of L-proline and L-tryptophan by the bimodular NRPS notE, to produce cyclo-L-tryptophan-L-proline called brevianamide F (PubMed:20722388). The reverse prenyltransferase notF then acts as a deoxybrevianamide E synthase and converts brevianamide F to deoxybrevianamide E via reverse prenylation at C-2 of the indole ring leading to the bicyclo[2.2.2]diazaoctane core (PubMed:20722388). Deoxybrevianamide E is further hydroxylated at C-6 of the indole ring, likely catalyzed by the cytochrome P450 monooxygenase notG, to yield 6- hydroxy-deoxybrevianamide E (Probable). 6-hydroxy-deoxybrevianamide E is a specific substrate of the prenyltransferase notC for normal prenylation at C-7 to produce 6-hydroxy-7-prenyl-deoxybrevianamide, also called notoamide S (PubMed:20722388). As the proposed pivotal branching point in notoamide biosynthesis, notoamide S can be diverted to notoamide E through an oxidative pyran ring closure putatively catalyzed by either notH cytochrome P450 monooxygenase or the notD FAD- linked oxidoreductase (Probable). This step would be followed by an indole 2,3-epoxidation-initiated pinacol-like rearrangement catalyzed by the notB FAD-dependent monooxygenase leading to the formation of notoamide C and notoamide D (PubMed:22188465). On the other hand notoamide S is converted to notoamide T by notH (or notD), a bifunctional oxidase that also functions as the intramolecular Diels- Alderase responsible for generation of (+)-notoamide T (Probable). To generate antipodal (-)-notoaminide T, notH' (or notD') in Aspergillus versicolor is expected to catalyze a Diels-Alder reaction leading to the opposite stereochemistry (Probable). The remaining oxidoreductase notD (or notH) likely catalyzes the oxidative pyran ring formation to yield (+)-stephacidin A (Probable). The FAD-dependent monooxygenase notI is highly similar to notB and is predicted to catalyze a similar conversion from (+)-stephacidin A to (-)-notoamide B via the 2,3- epoxidation of (+)-stephacidin A followed by a pinacol-type rearrangement (Probable). Finally, it remains unclear which enzyme could be responsible for the final hydroxylation steps leading to notoamide A and sclerotiamide (Probable). The fonction of notJ in the notoamide biosynthesis has not been determined yet (Probable).

NOTJ_ASPVE / L7WU85 Notoamide biosynthesis cluster protein J' from Aspergillus versicolor (see 3 papers)
Aligns to 36:343 / 362 (85.1%), covers 95.5% of PF13810, 203.2 bits

• function: Part of the gene cluster that mediates the biosynthesis of notoamide, a fungal indole alkaloid that belongs to a family of natural products containing a characteristic bicyclo[2.2.2]diazaoctane core (PubMed:23213353). The first step of notoamide biosynthesis involves coupling of L-proline and L-tryptophan by the bimodular NRPS notE', to produce cyclo-L-tryptophan-L-proline called brevianamide F (Probable). The reverse prenyltransferase notF' then acts as a deoxybrevianamide E synthase and converts brevianamide F to deoxybrevianamide E via reverse prenylation at C-2 of the indole ring leading to the bicyclo[2.2.2]diazaoctane core (PubMed:22660767) (Probable). Deoxybrevianamide E is further hydroxylated at C-6 of the indole ring, likely catalyzed by the cytochrome P450 monooxygenase notG', to yield 6-hydroxy-deoxybrevianamide E (Probable). 6-hydroxy-deoxybrevianamide E is a specific substrate of the prenyltransferase notC' for normal prenylation at C-7 to produce 6-hydroxy-7-prenyl-deoxybrevianamide, also called notoamide S (Probable). As the proposed pivotal branching point in notoamide biosynthesis, notoamide S can be diverted to notoamide E through an oxidative pyran ring closure putatively catalyzed by either notH' cytochrome P450 monooxygenase or the notD' FAD-linked oxidoreductase (Probable). This step would be followed by an indole 2,3-epoxidation-initiated pinacol-like rearrangement catalyzed by the notB' FAD-dependent monooxygenase leading to the formation of notoamide C and notoamide D (Probable). On the other hand notoamide S is converted to notoamide T by notH' (or notD'), a bifunctional oxidase that also functions as the intramolecular Diels-Alderase responsible for generation of (-)-notoamide T (Probable). To generate antipodal (+)-notoaminide T, notH (or notD) in Aspergillus strain MF297-2 is expected to catalyze a Diels-Alder reaction leading to the opposite stereochemistry (Probable). The remaining oxidoreductase notD' (or notH') likely catalyzes the oxidative pyran ring formation to yield (-)-stephacidin A (Probable). The FAD-dependent monooxygenase notI' is highly similar to notB' and is predicted to catalyze a similar conversion from (-)-stephacidin A to (+)-notoamide B via the 2,3- epoxidation of (-)-stephacidin A followed by a pinacol-type rearrangement (Probable). Finally, it remains unclear which enzyme could be responsible for the final hydroxylation steps leading to notoamide A and sclerotiamide (Probable). The fonction of notJ' in the notoamide biosynthesis has not been determined yet (Probable).

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