Actinopyrone A

Actinopyrone A

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Actinopyrone A
Category Antibiotics
Catalog number BBF-00545
CAS 88378-59-0
Molecular Weight 400.55
Molecular Formula C25H36O4
Purity >95%

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Description

Actinopyrone A is an antibiotic isolated from Streptomyces pacttm. Actinopyrone has a relaxing effect on the coronary blood vessels of anesthetized dogs, and has weak anti-gram-positive bacteria and trichoderma activity.

Specification

Synonyms 4H-Pyran-4-one, 2-(10-hydroxy-3,7,9,11-tetramethyl-2,5,7,11-tridecatetraenyl)-6-methoxy-3,5-dimethyl-
Storage Store at -20°C
IUPAC Name 2-[(2E,5E,7E,11E)-10-hydroxy-3,7,9,11-tetramethyltrideca-2,5,7,11-tetraenyl]-6-methoxy-3,5-dimethylpyran-4-one
Canonical SMILES CC=C(C)C(C(C)C=C(C)C=CCC(=CCC1=C(C(=O)C(=C(O1)OC)C)C)C)O
InChI InChI=1S/C25H36O4/c1-9-18(4)23(26)19(5)15-17(3)12-10-11-16(2)13-14-22-20(6)24(27)21(7)25(28-8)29-22/h9-10,12-13,15,19,23,26H,11,14H2,1-8H3/b12-10+,16-13+,17-15+,18-9+
InChI Key PFVSUJLJFXJPMF-CBXUJFJJSA-N
Source Streptomyces pactum

Properties

Appearance Colorless Oil
Antibiotic Activity Spectrum Gram-positive bacteria; fungi
Solubility Soluble in ethanol, methanol, DMF or DMSO. Poor water solubility.

Reference Reading

1. New Antimicrobial Phenyl Alkenoic Acids Isolated from an Oil Palm Rhizosphere-Associated Actinomycete, Streptomyces palmae CMU-AB204T
Kanaporn Sujarit, Saisamorn Lumyong, Mihoko Mori, Kazuyuki Dobashi, Kazuro Shiomi, Wasu Pathom-Aree Microorganisms . 2020 Mar 1;8(3):350. doi: 10.3390/microorganisms8030350.
Basal stem rot (BSR), orGanodermarot disease, is the most serious disease associated with the oil palm plant of Southeast Asian countries. A basidiomycetous fungus,Ganoderma boninense, is the causative microbe of this disease. To control BSR in oil palm plantations, biological control agents are gaining attention as a major alternative to chemical fungicides. In the course of searching for effective actinomycetes as potential biological control agents for BSR,Streptomyces palmaeCMU-AB204Twas isolated from oil palm rhizosphere soil collected on the campus of Chiang Mai University. The culture broth of this strain showed significant antimicrobial activities against several bacteria and phytopathogenic fungi includingG. boninense. Antifungal and antibacterial compounds were isolated by antimicrobial activity-guided purification using chromatographic methods. Their structures were elucidated by spectroscopic techniques, including Nuclear Magnetic Resonance (NMR), Mass Spectrometry (MS), Ultraviolet (UV), and Infrared (IR) analyses. The current study isolated new phenyl alkenoic acids1-6and three known compounds, anguinomycin A (7), leptomycin A (8), and actinopyrone A (9) as antimicrobial agents. Compounds1and2displayed broad antifungal activity, though they did not show antibacterial activity. Compounds3and4revealed a strong antibacterial activity against both Gram-positive and Gram-negative bacteria including the phytopathogenic strainXanthomonas campestrispv.oryzae. Compounds7-9displayed antifungal activity againstGanoderma. Thus, the antifungal compounds obtained in this study may play a role in protecting oil palm plants fromGanodermainfection with the strainS. palmaeCMU-AB204T.
2. Actinopyrones A, B and C, new physiologically active substances. II. Physico-chemical properties and chemical structures
J Sato, K Yokoi, K Yano, J Oono, Y Ogawa, T Nakashima, T Kouda J Antibiot (Tokyo) . 1986 Jan;39(1):38-43. doi: 10.7164/antibiotics.39.38.
The structure of physiologically active substances, actinopyrones A, B and C, produced by Streptomyces pactum S12538 were determined on the basis of their spectral and chemical character. These substances were structurally related to piericidin A1.
3. Evolution of Cytochrome c Oxidase in Hypoxia Tolerant Sculpins (Cottidae, Actinopterygii)
Milica Mandic, Gigi Y Lau, Jeffrey G Richards Mol Biol Evol . 2017 Sep 1;34(9):2153-2162. doi: 10.1093/molbev/msx179.
Vertebrate hypoxia tolerance can emerge from modifications to the oxygen (O2) transport cascade, but whether there is adaptive variation to O2 binding at the terminus of this cascade, mitochondrial cytochrome c oxidase (COX), is not known. In order to address the hypothesis that hypoxia tolerance is associated with enhanced O2 binding by mitochondria we undertook a comparative analysis of COX O2 kinetics across species of intertidal sculpins (Cottidae, Actinopterygii) that vary in hypoxia tolerance. Our analysis revealed a significant relationship between hypoxia tolerance (critical O2 tension of O2 consumption rate; Pcrit), mitochondrial O2 binding affinity (O2 tension at which mitochondrial respiration was half maximal; P50), and COX O2-binding affinity (apparent Michaelis-Menten constant for O2 binding to COX; Km,app O2). The more hypoxia tolerant species had both a lower mitochondrial P50 and lower COX Km,app O2, facilitating the maintenance of mitochondrial function to a lower O2 tension than in hypoxia intolerant species. Additionally, hypoxia tolerant species had a lower overall COX Vmax but higher mitochondrial COX respiration rate when expressed relative to maximal electron transport system respiration rate. In silico analyses of the COX3 subunit postulated as the entry point for O2 into the COX protein catalytic core, points to variation in COX3 protein stability (estimated as free energy of unfolding) contributing to the variation in COX Km,app O2. We propose that interactions between COX3 and cardiolipin at four amino acid positions along the same alpha-helix forming the COX3 v-cleft represent likely determinants of interspecific differences in COX Km,app O2.

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