(R)-Prunasin
(Synonyms: 野黑樱苷) 目录号 : GC41633
A cyanogenic glucoside
Cas No.:99-18-3
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
- View current batch:
- Purity: >95.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
(R)-Prunasin is a cyanogenic glucoside that is the precursor to amygdalin, a bitter component found in species of the genera Prunus and Olinia. It can be degraded to hydrogen cyanide, glucose, and benzaldehyde by the action of prunasin hydrolase and mandelonitrile lyase and possesses inhibitory effects on plant growth. (R)-Prunasin reportedly inhibits rat DNA polymerase β, which performs base excision repair required for DNA maintenance and replication, with an IC50 value of 98 µM.
| Cas No. | 99-18-3 | SDF | |
| 别名 | 野黑樱苷 | ||
| Canonical SMILES | O[C@H]1[C@H](O)[C@@H](CO)O[C@@H](O[C@@H](C#N)C2=CC=CC=C2)[C@@H]1O | ||
| 分子式 | C14H17NO6 | 分子量 | 295.3 |
| 溶解度 | DMF: 15 mg/ml,DMSO: 10 mg/ml,Ethanol: 10 mg/ml,PBS (pH 7.2): 5 mg/ml | 储存条件 | Store at -20°C |
| General tips | 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。 储备液的保存方式和期限：-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。 为了提高溶解度，请将管子加热至37℃，然后在超声波浴中震荡一段时间。 |
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| Shipping Condition | 评估样品解决方案：配备蓝冰进行发货。所有其他可用尺寸：配备RT，或根据请求配备蓝冰。 | ||
| 制备储备液 | |||
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1 mg | 5 mg | 10 mg |
| 1 mM | 3.3864 mL | 16.9319 mL | 33.8639 mL |
| 5 mM | 0.6773 mL | 3.3864 mL | 6.7728 mL |
| 10 mM | 0.3386 mL | 1.6932 mL | 3.3864 mL |
| 第一步：请输入基本实验信息（考虑到实验过程中的损耗，建议多配一只动物的药量） | ||||||||||
| 给药剂量 | mg/kg |  |
动物平均体重 | g | |
每只动物给药体积 | ul | |
动物数量 | 只 |
| 第二步：请输入动物体内配方组成（配方适用于不溶于水的药物；不同批次药物配方比例不同，请联系GLPBIO为您提供正确的澄清溶液配方） | ||||||||||
| % DMSO % % Tween 80 % saline | ||||||||||
| 计算重置 | ||||||||||
计算结果:
工作液浓度： mg/ml；
DMSO母液配制方法： mg 药物溶于 μL DMSO溶液（母液浓度 mg/mL，
体内配方配制方法：取 μL DMSO母液，加入 μL PEG300，混匀澄清后加入μL Tween 80，混匀澄清后加入 μL saline，混匀澄清。
1. 首先保证母液是澄清的；
2.
一定要按照顺序依次将溶剂加入，进行下一步操作之前必须保证上一步操作得到的是澄清的溶液，可采用涡旋、超声或水浴加热等物理方法助溶。
3. 以上所有助溶剂都可在 GlpBio 网站选购。
Facile Synthesis of Cyanogen Glycosides (R)-Prunasin, Linamarin and (S)-Heterodendrin
Biosci Biotechnol Biochem 1998;62(3):453-8.PMID:27315925DOI:10.1271/bbb.62.453.
A facile synthetic route is described to cyanogenic glycosides (R)-Prunasin, linamarin and (S)-heterodendrin from O-(2,3,4,6-tetra-O-acetyl-α-D-glucopyranosyl)trichloroace- timidate and the corresponding α-hydroxyamides by a 3-step reaction of glycosylation, cyanohydrin formation by dehydration of carboxamides, and deprotection.
Isolation and characterization of multiple forms of prunasin hydrolase from black cherry (Prunus serotina Ehrh.) seeds
Arch Biochem Biophys 1987 May 15;255(1):19-26.PMID:3109321DOI:10.1016/0003-9861(87)90290-6.
Three forms of prunasin hydrolase (PH I, PH IIa, and PH IIb), which catalyze the hydrolysis of (R)-Prunasin to mandelonitrile and D-glucose, have been purified from homogenates of mature black cherry (Prunus serotina Ehrh.) seeds. Hydroxyapatite chromatography completely resolved PH I from PH IIa and PH IIb. PH IIa and IIb, which coeluted on hydroxyapatite, were resolved by gel filtration. PH IIa was a dimer with a native molecular weight of 140,000. Both PH I and PH IIb were monomeric with molecular weights of 68,000. The isozymes appeared to be glycoproteins based on their binding to concanavalin A-Sepharose 4B with subsequent elution by alpha-methyl-D-glucoside. When presented several potential glycosidic substrates, these enzymes exhibited a narrow specificity towards (R)-Prunasin. Km values for (R)-Prunasin for PH I, PH IIa, and PH IIb were 1.73, 2.3, and 1.35 mM, respectively. PH I and PH IIb possessed fivefold greater Vmax/Km values than PH IIa. Ortho- and para-nitrophenyl-beta-D-glucosides were hydrolyzed at the same active site. All forms had a pH optimum of 5.0 in citrate-phosphate buffer. PH I and PH IIb were competitively inhibited by castanospermine with Ki values of 0.19 and 0.09 mM, respectively. PH activity was not stimulated by any metal ion tested and was unaffected by diethyldithiocarbamate, o-phenanthroline, 2,2'-dipyridyl, and EDTA.
Immunocytochemical Localization of Prunasin Hydrolase and Mandelonitrile Lyase in Stems and Leaves of Prunus serotina
Plant Physiol 1994 Dec;106(4):1285-1291.PMID:12232409DOI:10.1104/pp.106.4.1285.
In macerates of black cherry (Prunus serotina Ehrh.) leaves and stems, (R)-Prunasin is catabolized to HCN, benzaldehyde, and D-glucose by the sequential action of prunasin hydrolase (EC 3.2.1.21) and (R)-(+)-mandelonitrile lyase (EC 4.1.2.10). Immuno-cytochemical techniques have shown that within these organs prunasin hydrolase occurs within the vacuoles of phloem parenchyma cells. In arborescent leaves, mandelonitrile lyase was also located in phloem parenchyma vacuoles, but comparison of serial sections revealed that these two degradative enzymes are usually localized within different cells.
Investigation of the microheterogeneity and aglycone specificity-conferring residues of black cherry prunasin hydrolases
Plant Physiol 2002 Jul;129(3):1252-64.PMID:12114579DOI:10.1104/pp.010863.
In black cherry (Prunus serotina Ehrh.) seed homogenates, (R)-amygdalin is degraded to HCN, benzaldehyde, and glucose by the sequential action of amygdalin hydrolase (AH), prunasin hydrolase (PH), and mandelonitrile lyase. Leaves are also highly cyanogenic because they possess (R)-Prunasin, PH, and mandelonitrile lyase. Taking both enzymological and molecular approaches, we demonstrate here that black cherry PH is encoded by a putative multigene family of at least five members. Their respective cDNAs (designated Ph1, Ph2, Ph3, Ph4, and Ph5) predict isoforms that share 49% to 92% amino acid identity with members of glycoside hydrolase family 1, including their catalytic asparagine-glutamate-proline and isoleucine-threonine-glutamate-asparagine-glycine motifs. Furthermore, consistent with the vacuolar/protein body location and glycoprotein character of these hydrolases, their open reading frames predict N-terminal signal sequences and multiple potential N-glycosylation sites. Genomic sequences corresponding to the open reading frames of these PHs and of the previously isolated AH1 isoform are interrupted at identical positions by 12 introns. Earlier studies established that native AH and PH display strict specificities toward their respective glucosidic substrates. Such behavior was also shown by recombinant AH1, PH2, and PH4 proteins after expression in Pichia pastoris. Three amino acid moieties that may play a role in conferring such aglycone specificities were predicted by structural modeling and comparative sequence analysis and tested by introducing single and multiple mutations into isoform AH1 by site-directed mutagenesis. The double mutant AH ID (Y200I and G394D) hydrolyzed prunasin at approximately 150% of the rate of amygdalin hydrolysis, whereas the other mutations failed to engender PH activity.