WS9326A

WS9326A

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Category Bioactive by-products
Catalog number BBF-01651
CAS
Molecular Weight 1037.2
Molecular Formula C54H68N8O13

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Description

WS9326A is a tachykinin antagonist from Streptomyces violaceusniger No. 9326.

Specification

Synonyms WS-9326A
IUPAC Name (E)-N-[(3S,6S,9S,12R,15S,18E,21S,22R)-6-(2-amino-2-oxoethyl)-12-benzyl-9-[(1S)-1-hydroxyethyl]-3-(hydroxymethyl)-18-[(4-hydroxyphenyl)methylidene]-19,22-dimethyl-15-(2-methylpropyl)-2,5,8,11,14,17,20-heptaoxo-1-oxa-4,7,10,13,16,19-hexazacyclodocos-21-yl]-3-[2-[(Z)-pent-1-enyl]phenyl]prop-2-enamide
Canonical SMILES CCCC=CC1=CC=CC=C1C=CC(=O)NC2C(OC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(=CC3=CC=C(C=C3)O)N(C2=O)C)CC(C)C)CC4=CC=CC=C4)C(C)O)CC(=O)N)CO)C
InChI InChI=1S/C54H68N8O13/c1-7-8-10-17-36-18-13-14-19-37(36)22-25-45(67)60-47-33(5)75-54(74)42(30-63)59-49(69)41(29-44(55)66)58-52(72)46(32(4)64)61-50(70)40(27-34-15-11-9-12-16-34)56-48(68)39(26-31(2)3)57-51(71)43(62(6)53(47)73)28-35-20-23-38(65)24-21-35/h9-25,28,31-33,39-42,46-47,63-65H,7-8,26-27,29-30H2,1-6H3,(H2,55,66)(H,56,68)(H,57,71)(H,58,72)(H,59,69)(H,60,67)(H,61,70)/b17-10-,25-22+,43-28+/t32-,33+,39-,40+,41-,42-,46-,47-/m0/s1
InChI Key BVVWVQZZLUNSNV-QMXPZCTJSA-N

Properties

Appearance Solid Powder
Melting Point 187-190°C

Reference Reading

1. Role of Two Exceptional trans Adenylation Domains and MbtH-like Proteins in the Biosynthesis of the Nonribosomal Peptide WS9324A from Streptomyces calvus ATCC 13382
Mirjam Bernhardt, Stefanie Berman, David Zechel, Andreas Bechthold Chembiochem. 2020 Sep 14;21(18):2659-2666. doi: 10.1002/cbic.202000142. Epub 2020 Jun 18.
Nonribosomal peptide synthetases (NRPS) are organized in a modular arrangement. Usually, the modular order corresponds to the assembly of the amino acids in the respective peptide, following the collinearity rule. The WS9326A biosynthetic gene cluster from Streptomyces calvus shows deviations from this rule. Most interesting is the presence of two trans adenylation domains that are located downstream of the modular NRPS arrangement. Adenylation domains are responsible for the activation of their respective amino acids. In this study, we confirmed the involvement of the trans adenylation domains in WS9326A biosynthesis by performing gene knockout experiments and by observing the selective adenylation of their predicted amino acid substrates in vitro. We conclude that the trans adenylation domains are essential for WS9326A biosynthesis. Moreover, both adenylation domains are observed to have MbtH-like protein dependency. Overall, we conclude that the trans adenylation domains are essential for WS9326A biosynthesis.
2. Unprecedented Noncanonical Features of the Nonlinear Nonribosomal Peptide Synthetase Assembly Line for WS9326A Biosynthesis
Myoun-Su Kim, Munhyung Bae, Ye-Eun Jung, Jung Min Kim, Sunghoon Hwang, Myoung Chong Song, Yeon Hee Ban, Eun Seo Bae, Suckchang Hong, Sang Kook Lee, Sun-Shin Cha, Dong-Chan Oh, Yeo Joon Yoon Angew Chem Int Ed Engl. 2021 Sep 1;60(36):19766-19773. doi: 10.1002/anie.202103872. Epub 2021 Jun 17.
Systematic inactivation of nonribosomal peptide synthetase (NRPS) domains and translocation of the thioesterase (TE) domain revealed several unprecedented nonlinear NRPS assembly processes during the biosynthesis of the cyclodepsipeptide WS9326A in Streptomyces sp. SNM55. First, two sets of type ΙΙ TE (TEΙΙ)-like enzymes mediate the shuttling of activated amino acids between two sets of stand-alone adenylation (A)-thiolation (T) didomain modules and an "A-less" condensation (C)-T module with distinctive specificities and flexibilities. This was confirmed by the elucidation of the affinities of the A-T didomains for the TEΙΙs and its structure. Second, the C-T didomain module operates iteratively and independently from other modules in the same protein to catalyze two chain elongation cycles. Third, this biosynthetic pathway includes the first example of module skipping, where the interpolated C and T domains are required for chain transfer.
3. Cyclodimerization of Mohangamide A by Thioesterase Domain Is Directed by Substrates
Myoun-Su Kim, Munhyung Bae, Myoung Chong Song, Sunghoon Hwang, Dong-Chan Oh, Yeo Joon Yoon Org Lett. 2022 Jun 24;24(24):4444-4448. doi: 10.1021/acs.orglett.2c01670. Epub 2022 Jun 14.
Mohangamide A is a pseudo-dimeric nonribosomal peptide biosynthesized along with its monomer, WS9326A, and is expected to be formed by the head-to-tail cyclodimerization of linear WS9326A and another identical peptide chain with a different acyl side chain. In vitro experiments with the N-acetylcysteamine thioesters of the corresponding monomeric intermediates and thioesterase domains of Streptomyces sp. SNM55 and S. calvus showed that this cyclodimerization reaction is directed by the substrate structures and occurs only with both linear intermediates.

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