Phepropeptin D
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| Category | Enzyme inhibitors |
| Catalog number | BBF-02402 |
| CAS | |
| Molecular Weight | 730.93 |
| Molecular Formula | C41H58N6O6 |
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Description
It is produced by the strain of Streptomyces sp. MK600-cF7. It can inhibit the activity of Proteasome with IC50 of 7.8 μg/mL.
Specification
| IUPAC Name | (3R,6S,9S,12R,15S,18S)-3,15-dibenzyl-9-butan-2-yl-6,12-bis(2-methylpropyl)-1,4,7,10,13,16-hexazabicyclo[16.3.0]henicosane-2,5,8,11,14,17-hexone |
| Canonical SMILES | CCC(C)C1C(=O)NC(C(=O)NC(C(=O)N2CCCC2C(=O)NC(C(=O)NC(C(=O)N1)CC(C)C)CC3=CC=CC=C3)CC4=CC=CC=C4)CC(C)C |
| InChI | InChI=1S/C41H58N6O6/c1-7-27(6)35-40(52)44-30(21-25(2)3)36(48)45-33(24-29-17-12-9-13-18-29)41(53)47-20-14-19-34(47)39(51)43-32(23-28-15-10-8-11-16-28)37(49)42-31(22-26(4)5)38(50)46-35/h8-13,15-18,25-27,30-35H,7,14,19-24H2,1-6H3,(H,42,49)(H,43,51)(H,44,52)(H,45,48)(H,46,50)/t27?,30-,31+,32-,33+,34-,35-/m0/s1 |
| InChI Key | RDFYNJULNCUNKD-WKIUDYFUSA-N |
Properties
| Appearance | White Powder |
| Melting Point | 125-127°C |
| Solubility | Soluble in Methanol |
Reference Reading
1. Isolation and structural determination of phepropeptins A, B, C, and D, new proteasome inhibitors, produced by Streptomyces sp
R Sekizawa, I Momose, N Kinoshita, H Naganawa, M Hamada, Y Muraoka, H Iinuma, T Takeuchi J Antibiot (Tokyo). 2001 Nov;54(11):874-81. doi: 10.7164/antibiotics.54.874.
We have isolated four related compounds named phepropeptins A, B, C, and D, as inhibitors of proteasome proposed to regulate many cellular functions. From an NMR analysis, the phepropeptins appeared as cyclic hexapeptides, differing in the two residues of the constituent amino acids from one another, with four conserved amino acid moieties. Based on an amino acid analysis, we synthesized two possible cyclic peptides to phepropeptin B that differ in the configurations. A comparison of the properties between the natural and synthesized compounds revealed that the structure of phepropeptin B was cyclo(-L-Leu-D-Phe-L-Pro-L-Phe-D-Leu-L-Val-). The phepropeptins showed inhibition to the proteasomal chymotrypsin-like activity but not to alpha-chymotrypsin.
2. Developing Cyclic Peptomers as Broad-Spectrum Type III Secretion System Inhibitors in Gram-Negative Bacteria
Hanh N Lam, Tannia Lau, Adam Lentz, Jessica Sherry, Alejandro Cabrera-Cortez, Karen Hug, Annalyse Lalljie, Joanne Engel, R Scott Lokey, Victoria Auerbuch Antimicrob Agents Chemother. 2021 Jun 17;65(7):e0169020. doi: 10.1128/AAC.01690-20. Epub 2021 Jun 17.
Antibiotic-resistant bacteria are an emerging global health threat. New antimicrobials are urgently needed. The injectisome type III secretion system (T3SS), required by dozens of Gram-negative bacteria for virulence but largely absent from nonpathogenic bacteria, is an attractive antimicrobial target. We previously identified synthetic cyclic peptomers, inspired by the natural product phepropeptin D, that inhibit protein secretion through the Yersinia Ysc and Pseudomonas aeruginosa Psc T3SSs but do not inhibit bacterial growth. Here, we describe the identification of an isomer, 4EpDN, that is 2-fold more potent (50% inhibitory concentration [IC50] of 4 μM) than its parental compound. Furthermore, 4EpDN inhibited the Yersinia Ysa and the Salmonella SPI-1 T3SSs, suggesting that this cyclic peptomer has broad efficacy against evolutionarily distant injectisome T3SSs. Indeed, 4EpDN strongly inhibited intracellular growth of Chlamydia trachomatis in HeLa cells, which requires the T3SS. 4EpDN did not inhibit the unrelated twin arginine translocation (Tat) system, nor did it impact T3SS gene transcription. Moreover, although the injectisome and flagellar T3SSs are evolutionarily and structurally related, the 4EpDN cyclic peptomer did not inhibit secretion of substrates through the Salmonella flagellar T3SS, indicating that cyclic peptomers broadly but specifically target the injectisome T3SS. 4EpDN reduced the number of T3SS needles detected on the surface of Yersinia pseudotuberculosis as detected by microscopy. Collectively, these data suggest that cyclic peptomers specifically inhibit the injectisome T3SS from a variety of Gram-negative bacteria, possibly by preventing complete T3SS assembly.
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Bio Calculators
* Our calculator is based on the following equation:
Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
It is commonly abbreviated as: C1V1 = C2V2
* Total Molecular Weight:
g/mol
Tip: Chemical formula is case sensitive. C22H30N4O √ c22h30n40 ╳
