NCBI Taxonomy: 253167
Stelletta (ncbi_taxid: 253167)
found 114 associated metabolites at genus taxonomy rank level.
Ancestor: Ancorinidae
Child Taxonomies: Stelletta lactea, Stelletta grubii, Stelletta fibrosa, Stelletta clavosa, Stelletta normani, Stelletta capensis, Stelletta herdmani, Stelletta clarella, Stelletta tuberosa, Stelletta dorsigera, Stelletta anthastra, Stelletta dichoclada, Stelletta tuberculata, Stelletta mediterranea, Stelletta carolinensis, unclassified Stelletta, Stelletta raphidiophora, Stelletta cf. agulhana G3833
Zeaxanthin
Zeaxanthin is a carotenoid xanthophyll and is one of the most common carotenoid found in nature. It is the pigment that gives corn, saffron, and many other plants their characteristic color. Zeaxanthin breaks down to form picrocrocin and safranal, which are responsible for the taste and aroma of saffron Carotenoids are among the most common pigments in nature and are natural lipid soluble antioxidants. Zeaxanthin is one of the two carotenoids (the other is lutein) that accumulate in the eye lens and macular region of the retina with concentrations in the macula greater than those found in plasma and other tissues. Lutein and zeaxanthin have identical chemical formulas and are isomers, but they are not stereoisomers. The main difference between them is in the location of a double bond in one of the end rings. This difference gives lutein three chiral centers whereas zeaxanthin has two. A relationship between macular pigment optical density, a marker of lutein and zeaxanthin concentration in the macula, and lens optical density, an antecedent of cataractous changes, has been suggested. The xanthophylls may act to protect the eye from ultraviolet phototoxicity via quenching reactive oxygen species and/or other mechanisms. Some observational studies have shown that generous intakes of lutein and zeaxanthin, particularly from certain xanthophyll-rich foods like spinach, broccoli and eggs, are associated with a significant reduction in the risk for cataract (up to 20\\%) and for age-related macular degeneration (up to 40\\%). While the pathophysiology of cataract and age-related macular degeneration is complex and contains both environmental and genetic components, research studies suggest dietary factors including antioxidant vitamins and xanthophylls may contribute to a reduction in the risk of these degenerative eye diseases. Further research is necessary to confirm these observations. (PMID: 11023002). Zeaxanthin has been found to be a microbial metabolite, it can be produced by Algibacter, Aquibacter, Escherichia, Flavobacterium, Formosa, Gramella, Hyunsoonleella, Kordia, Mesoflavibacter, Muricauda, Nubsella, Paracoccus, Siansivirga, Sphingomonas, Zeaxanthinibacter and yeast (https://reader.elsevier.com/reader/sd/pii/S0924224417302571?token=DE6BC6CC7DCDEA6150497AA3E375097A00F8E0C12AE03A8E420D85D1AC8855E62103143B5AE0B57E9C5828671F226801). It is a marker for the activity of Bacillus subtilis and/or Pseudomonas aeruginosa in the intestine. Higher levels are associated with higher levels of Bacillus or Pseudomonas. (PMID: 17555270; PMID: 12147474) Zeaxanthin is a carotenol. It has a role as a bacterial metabolite, a cofactor and an antioxidant. It derives from a hydride of a beta-carotene. Zeaxanthin is a most common carotenoid alcohols found in nature that is involved in the xanthophyll cycle. As a coexistent isomer of lutein, zeaxanthin is synthesized in plants and some micro-organisms. It gives the distinct yellow color to many vegetables and other plants including paprika, corn, saffron and wolfberries. Zeaxanthin is one of the two primary xanthophyll carotenoids contained within the retina of the eye and plays a predominant component in the central macula. It is available as a dietary supplement for eye health benefits and potential prevention of age-related macular degeneration. Zeaxanthin is also added as a food dye. Zeaxanthin is a natural product found in Bangia fuscopurpurea, Erythrobacter longus, and other organisms with data available. Carotenoids found in fruits and vegetables. Zeaxanthin accumulates in the MACULA LUTEA. See also: Saffron (part of); Corn (part of); Lycium barbarum fruit (part of). D020011 - Protective Agents > D000975 - Antioxidants > D002338 - Carotenoids
7-Ketocholesterol
7-Ketocholesterol is a major oxidation product of cholesterol (oxysterol) found in human atherosclerotic plaque and is more atherogenic than cholesterol in some animal studies. Oxysterols (oxygenated forms of cholesterol) are present at low levels in the circulation and accumulate is plasma and tissues in some pathologies. In atherosclerotic lesions, 7-oxygenated oxysterols, predominantly 7-ketocholesterol, accumulate and have been implicated in the pathology of the disease. There is some in vivo and in vitro evidence that sterol 27-hydroxylase acts on 7-ketocholesterol to initiate its degradation to more polar, water-soluble products. Recent studies indicate an alternative mechanism, in which 7-ketocholesterol is reduced to 7 beta-hydroxycholesterol by 11 beta-hydroxysteroid dehydrogenase type 1. 7-Ketocholesterol can inhibit cholesterol 7 alpha-hydroxylase, the rate-limiting step in bile acid biosynthesis, as well as strongly inhibiting HMG-CoA reductase, the rate-limiting enzyme in cholesterol biosynthesis. It has even been suggested that 7-ketocholesterol is formed enzymically as an endogenous regulator of cholesterol biosynthesis. However, when tested as a pharmacological cholesterol-lowering agent, inhibition of HMG-CoA reductase was rapidly overcome and the 7-ketocholesterol metabolised. In vitro, 7-ketocholesterol has wide-ranging and potent effects, most of which have the potential to contribute to atherosclerosis. For example, 7-ketocholesterol can be cytotoxic and can induce apoptosis in vascular cells. These effects, either individually or more likely, in combination, all implicate 7-ketocholesterol in the initiation and development of atherosclerosis, but further work is needed to establish whether or not its role is a direct causal one. 7-Ketocholesterol is the second most abundant oxysterol found in human atherosclerotic plaque, after the enzymically formed 27-hydroxycholesterol (cholest-5-ene-3beta,27-diol). 7-Ketocholesterol differs from cholesterol by a ketone functional group present at the 7-position. It is produced from cholesterol via the epimeric cholesterol 7-hydroperoxides (cholest-5-ene-3beta-ol-7-hydroperoxide) which decompose to the epimeric 7-hydroxycholesterols (cholest-5-ene-3beta,7-diol) and 7-ketocholesterol. 7-Ketocholesterol is a major dietary oxysterol. It has also been widely suggested that 7-ketocholesterol present in atherosclerotic tissue may be derived from the diet. Certainly, 7-ketocholesterol is a major oxysterol found in cholesterol-rich processed foodstuffs. Dietary 7-ketocholesterol is rapidly metabolised by the liver to 7beta-hydroxycholesterol (cholest-5-ene-3beta,7beta-diol), unusual bile acids and perhaps even cholesterol itself. Its conversion to 7beta-hydroxycholesterol is well documented. (PMID: 15798369, 10224662). 7-Ketocholesterol is a major oxidation product of cholesterol (oxysterol) found in human atherosclerotic plaque and is more atherogenic than cholesterol in some animal studies. Oxysterols (oxygenated forms of cholesterol) are present at low levels in the circulation and accumulate is plasma and tissues in some pathologies. In atherosclerotic lesions, 7-oxygenated oxysterols, predominantly 7-ketocholesterol, accumulate and have been implicated in the pathology of the disease. There is some in vivo and in vitro evidence that sterol 27-hydroxylase acts on 7-ketocholesterol to initiate its degradation to more polar, water-soluble products. Recent studies indicate an alternative mechanism, in which 7-ketocholesterol is reduced to 7 beta-hydroxycholesterol by 11 beta-hydroxysteroid dehydrogenase type 1. 7-Ketocholesterol, toxic oxysterol, inhibits the rate-limiting step in bile acid biosynthesis cholesterol 7 alpha-hydroxylase, as well as strongly inhibiting HMG-CoA reductase (the rate-limiting enzyme in cholesterol biosynthesis). 7-Ketocholesterol induces cell apoptosis[1].
Cyclo(pro-val)
Cyclo(L-Pro-L-Val) is a 2,5-diketopiperazine, with toxic activity against phytopathogenic microorganisms (such as R. fascians LMG 3605). Cyclo(L-Pro-L-Val) shows toxicity similar to Chloramphenicol (HY-B0239) with comparable concentration. Cyclo(L-Pro-L-Val) can also inhibit gram-positive phytopathogenic bacterium. Cyclo(L-Pro-L-Val) has potential development as biopesticide[1]. Cyclo(L-Pro-L-Val) is a 2,5-diketopiperazine, with toxic activity against phytopathogenic microorganisms (such as R. fascians LMG 3605). Cyclo(L-Pro-L-Val) shows toxicity similar to Chloramphenicol (HY-B0239) with comparable concentration. Cyclo(L-Pro-L-Val) can also inhibit gram-positive phytopathogenic bacterium. Cyclo(L-Pro-L-Val) has potential development as biopesticide[1]. Cyclo(Pro-Val) can be isolated from Pseudomonas fluorescens GcM5-1A and has cytotoxicity[1].
Zeaxanthin
Meso-zeaxanthin (3R,3´S-zeaxanthin) is a xanthophyll carotenoid, as it contains oxygen and hydrocarbons, and is one of the three stereoisomers of zeaxanthin. Of the three stereoisomers, meso-zeaxanthin is the second most abundant in nature after 3R,3´R-zeaxanthin, which is produced by plants and algae. To date, meso-zeaxanthin has been identified in specific tissues of marine organisms and in the macula lutea, also known as the "yellow spot", of the human retina . Meso-zeaxanthin is a member of the class of compounds known as xanthophylls. Xanthophylls are carotenoids containing an oxygenated carotene backbone. Carotenes are characterized by the presence of two end-groups (mostly cyclohexene rings, but also cyclopentene rings or acyclic groups) linked by a long branched alkyl chain. Carotenes belonging form a subgroup of the carotenoids family. Xanthophylls arise by oxygenation of the carotene backbone. Meso-zeaxanthin is practically insoluble (in water) and an extremely weak acidic compound (based on its pKa). Meso-zeaxanthin can be found in channel catfish, crustaceans, and fishes, which makes meso-zeaxanthin a potential biomarker for the consumption of these food products. D020011 - Protective Agents > D000975 - Antioxidants > D002338 - Carotenoids Window width for selecting the precursor ion was 3 Da.; This record was created by the financial support of MEXT/JSPS KAKENHI Grant Number 16HP2005 to the Mass Spectrometry Society of Japan.
7-KETOCHOLESTEROL
A cholestanoid that consists of cholesterol bearing an oxo substituent at position 7. D004791 - Enzyme Inhibitors 7-Ketocholesterol, toxic oxysterol, inhibits the rate-limiting step in bile acid biosynthesis cholesterol 7 alpha-hydroxylase, as well as strongly inhibiting HMG-CoA reductase (the rate-limiting enzyme in cholesterol biosynthesis). 7-Ketocholesterol induces cell apoptosis[1].
2-methoxy-12-methyloctadec-17-en-5-ynoyl anhydride
3-(3-carbamimidamidopropyl)-5-(2-{[(2e,7e)-1-hydroxy-4,8,12-trimethyltrideca-2,7,11-trien-1-ylidene]amino}ethyl)-1-methylimidazol-1-ium
(4s,6s,8s,10s,12s,14s,16s,18s,19e)-4,6,8,10,12,14,16,18-octamethoxy-19-methylpentacosa-1,19-diene
(2s)-2,3-dihydroxypropyl (2s,7z)-2-methoxy-12-methyloctadeca-7,17-dien-5-ynoate
(2r)-2-hydroxy-3-{[(2s,7z)-2-methoxy-12-methyloctadeca-7,17-dien-5-ynoyl]oxy}propyl 2-(trimethylammonio)ethylphosphonate
(2s,3s,4r)-n-[(3r,4r,7r,13s,16s,19r,24s,25as)-24-chloro-5,8,11,17-tetrahydroxy-16-[(1r)-1-hydroxyethyl]-3-isopropyl-19-[(r)-methoxy(4-{[(2s,3r,4r,5r,6s)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxy}phenyl)methyl]-7-(methoxymethyl)-13,15-dimethyl-1,14,20-trioxo-3h,4h,7h,10h,13h,16h,19h,22h,23h,24h,25h,25ah-pyrido[2,1-c]1-oxa-4,7,10,13,16,19-hexaazacyclodocosan-4-yl]-2-{[(2s,3s)-3-amino-2-{[(2z)-2-({2-[(1,3-dihydroxy-2,6,8-trimethyldeca-4,6-dien-1-ylidene)amino]-1-hydroxyethylidene}amino)-1-hydroxybut-2-en-1-ylidene]amino}-1-hydroxybutylidene]amino}-3,4-dimethylpentanediimidic acid
4,6,8,10,12,14,16,18,20,22,24-undecamethoxy-25-methylhentriaconta-1,25-diene
1-hydroxy-3-(2-methylpropyl)-3h,6h,7h,8h,8ah-pyrrolo[1,2-a]pyrazin-4-one
10,20-dimethyl-5,15-bis(2-methylcyclopropyl)-9,19-bis[(3,4,5-trimethoxyoxan-2-yl)oxy]-4,14,21,22-tetraoxatricyclo[15.3.1.1⁷,¹¹]docosane-3,13-dione
(2e,4e)-n-[n-(4-carbamimidamidobutyl)carbamimidoyl]-5-[(1r,2s,5r)-2-[(1e)-2-{[n-(4-carbamimidamidobutyl)carbamimidoyl]-c-hydroxycarbonimidoyl}-2-methyleth-1-en-1-yl]-1,4-dimethyl-5-(3-methylbut-2-en-1-yl)cyclohex-3-en-1-yl]-2-methylpenta-2,4-dienimidic acid
β-sitostenone
{"Ingredient_id": "HBIN018272","Ingredient_name": "\u03b2-sitostenone","Alias": "NA","Ingredient_formula": "C29H48O","Ingredient_Smile": "CCC(CCC(C)C1CCC2C1(CCC3C2CC=C4C3(CCC(=O)C4)C)C)C(C)C","Ingredient_weight": "NA","OB_score": "NA","CAS_id": "NA","SymMap_id": "NA","TCMID_id": "19965","TCMSP_id": "NA","TCM_ID_id": "NA","PubChem_id": "NA","DrugBank_id": "NA"}
