Streptomycin aptamer
Timeline
The first label-free modified RNA-aptasensor for the detection of small molecules in biological samples was presented[4]
The stability of an aptamer, which was formed by two RNA strands and binds the antibiotic streptomycin[11]
The unfolding behavior of a streptomycin-binding ribonucleic acid (RNA) aptamer under application of forced in shear geometry[13]
Truncated STR aptamers yield higher affinity S03 aptamers and can be used to detect STR recognition elements[14]
Description
In 1998, Schroeder, R. et al. used in vitro selection techniques to isolate aptamers with high-affinity binding sites for Streptomycin. In 2003, Ellington, A. D et al. determined the tertiary structure of the aptamer for the first time. In 2007, Schroeder, R et al. introduced a label free modified RNA aptasensor for detecting small molecules in biological samples[1,2,4].
SELEX
Starting with a pool of 1015 different DNA molecules, in vitro selection procedures were carried out to select RNAs with a high affinity for streptomycin. Affinity chromatography was performed using dihydrostreptomycin coupled to sepharose. RNA from the starting pool was applied to the dihydrostreptomycin column and specifically eluted. RNAs from the three final pools were reverse-transcribed, PCR amplified, cloned, and subjected to sequence analysis. Among the 99 clones sequenced (33 from each selection procedure), 43 were unique[1].
Detailed information are accessible on SELEX page.
Structure
2D representation
In 2003, Ellington, A. D et al. obtained the crystallographic structure of a streptomycin aptamer through X-ray diffraction techniques, and detailed the molecular recognition principles after analyzing the structural data. The RNA aptamer is characterised by an L-shaped architecture that forms a distinct binding pocket for streptomycin, as illustrated in the subsequent diagrams. Here we utilized RiboDraw to complete the figure, based the 3D structure information[2].
Chain A: 5'-GGAUCGCAUUUGGACUUCUGCC-3'
Chain B: 5'-CGGCACCACGGUCGGAUC-3'
3D visualisation
Ellington, A. D et al. determined the structures of complexes formed by the Streptomycin RNA aptamer at high resolution using X-ray crystallography. The structure of the Streptomycin RNA-aptamer complex was refined to a high resolution of 2.9 Å. The PDB ID for this structure is 1NTA[2].
Additional available structures that have been solved and detailed information are accessible on Structures page.
(Clicking the "Settings/Controls info" to turn Spin off)
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Binding pocket
Left: Surface representation of the binding pocket of the aptamer generated from PDB ID: 1NTA by X-ray. Streptomycin (shown in sticks) is labeled in magenta. Right: The hydrogen bonds of binding sites of the aptamer bound with streptomycin[2].
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Ligand information
SELEX ligand
The RNA aptamers, specifically those containing motif 1 and motif 2, were selected through in vitro selection procedures to bind streptomycin with high affinity and specificity. The binding affinity of these RNA aptamers was demonstrated using affinity chromatography. In this experiment, RNAs containing motifs 1 and motif 2 were subjected to dihydrostreptomycin-coupled sepharose beads, and the binding of streptomycin to the RNA aptamers was assessed by eluting the RNA with varying concentrations of streptomycin and bluensomycin. The elution profiles showed that the RNA containing motif 1 could be specifically eluted with 1 μM streptomycin, but not with 1 mM bluensomycin, indicating a high affinity for streptomycin and strong discrimination against bluensomycin. In subsequent research, the RNA in the crystal structure of the streptomycin aptamer complex was motif 1[1].
Structure ligand
Streptomycin is an aminoglycoside antibiotic indicated to treat multi-drug resistant mycobacterium tuberculosis and various non-tuberculosis infections.-----From Drugbank
PubChem CID: a unique identifier for substances in the PubChem database.
CAS number: a global registry number for chemical substances.
Drugbank: a comprehensive database with detailed information on drugs and drug targets.
Name | PubChem CID | Molecular Formula | Molecular Weight | CAS | Solubility | Drugbank ID |
---|---|---|---|---|---|---|
Streptomycin | 19649 | C21H39N7O12 | 581.6 g/mol | 57-92-1 | 40 g/L (at 20 °C) | DB01082 |
Similar compound(s)
We screened the compounds with great similarity to streptomycin by using the ZINC database and showed some of the compounds' structure diagrams. For some CAS numbers not available,we will supplement them with Pubchem CID.
ZINC ID: a compound identifier used by the ZINC database, one of the largest repositories for virtual screening of drug-like molecules.
PubChem CID: a unique identifier for substances in the PubChem database.
CAS number: a global registry number for chemical substances.
ZINC ID | Name | CAS | Pubchem CID | Structure |
---|---|---|---|---|
ZINC8214681 | Streptomycin | 57-92-1 | 19649 | |
ZINC36176697 | 2-[(1S,2R,3R,4R,5S,6S)-3-(diaminomethylideneamino)-4-[(2R,3S,4S,5S)-3-[(2R,3R,4S,5S,6S)-4,5-dihydroxy-6-(hydroxymethyl)-3-(methylamino)oxan-2-yl]oxy-4-formyl-4-hydroxy-5-methyloxolan-2-yl]oxy-2,5,6-trihydroxycyclohexyl]guanidine | NA | 93190235 | |
ZINC36176688 | 2-[(1S,2R,3R,4R,5S,6S)-3-(diaminomethylideneamino)-4-[(2R,3S,4R,5S)-3-[(2R,3R,4S,5S,6S)-4,5-dihydroxy-6-(hydroxymethyl)-3-(methylamino)oxan-2-yl]oxy-4-formyl-4-hydroxy-5-methyloxolan-2-yl]oxy-2,5,6-trihydroxycyclohexyl]guanidine | NA | 93190230 | |
ZINC8101190 | 2-[(1S,2R,3R,4R,5S,6S)-3-(diaminomethylideneamino)-4-[(2R,3S,4R,5R)-3-[(2R,3R,4S,5S,6S)-4,5-dihydroxy-6-(hydroxymethyl)-3-(methylamino)oxan-2-yl]oxy-4-formyl-4-hydroxy-5-methyloxolan-2-yl]oxy-2,5,6-trihydroxycyclohexyl]guanidine | NA | 92328111 | |
ZINC1078030477 | 2-[(1R,2S,3S,4S,5S,6R)-3-(diaminomethylideneamino)-4-[(2S,3S,4R,5R)-3-[(2S,3S,4S,5S,6S)-4,5-dihydroxy-6-(hydroxymethyl)-3-(methylamino)oxan-2-yl]oxy-4-formyl-4-hydroxy-5-methyloxolan-2-yl]oxy-2,5,6-trihydroxycyclohexyl]guanidine | NA | 44120113 | |
ZINC8214760 | 2-[(1R,2R,3S,4R,5R,6S)-3-(diaminomethylideneamino)-4-[(2R,3S,4R,5S)-3-[(2S,3S,4S,5R,6S)-4,5-dihydroxy-6-(hydroxymethyl)-3-(methylamino)oxan-2-yl]oxy-4-formyl-4-hydroxy-5-methyloxolan-2-yl]oxy-2,5,6-trihydroxycyclohexyl]guanidine | NA | 2735213 | |
ZINC253487932 | 2-[(1R,2S,3S,4S,5R,6R)-3-(diaminomethylideneamino)-4-[(2R,3S,4R,5R)-3-[(2S,3S,4R,5S,6R)-4,5-dihydroxy-6-(hydroxymethyl)-3-(methylamino)oxan-2-yl]oxy-4-formyl-4-hydroxy-5-methyloxolan-2-yl]oxy-2,5,6-trihydroxycyclohexyl]guanidine | NA | 124894813 | |
ZINC253487934 | 2-[(1R,2S,3S,4S,5R,6R)-3-(diaminomethylideneamino)-4-[(2R,3S,4R,5R)-3-[(2S,3S,4R,5R,6R)-4,5-dihydroxy-6-(hydroxymethyl)-3-(methylamino)oxan-2-yl]oxy-4-formyl-4-hydroxy-5-methyloxolan-2-yl]oxy-2,5,6-trihydroxycyclohexyl]guanidine | NA | 124894815 |
References
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[2] Encapsulating streptomycin within a small 40-mer RNA.
Tereshko, V., Skripkin, E., & Patel, D. J.
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[3] Aptamer therapeutics advance.
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Current opinion in chemical biology, 10(3), 282–289. (2006)
[4] Modified-RNA aptamer-based sensor for competitive impedimetric assay of neomycin B.
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Journal of the American Chemical Society, 129(13), 3808–3809 (2007)
[5] Isolation of small RNA-binding proteins from E. coli: evidence for frequent interaction of RNAs with RNA polymerase.
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[7] The tuberculosis drug streptomycin as a potential cancer therapeutic: inhibition of miR-21 function by directly targeting its precursor.
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[8] Toggled RNA aptamers against aminoglycosides allowing facile detection of antibiotics using gold nanoparticle assays.
Derbyshire, N., White, S. J., Bunka, D. H., Song, L., Stead, S., Tarbin, J., Sharman, M., Zhou, D., & Stockley, P. G.
Analytical chemistry, 84(15), 6595–6602 (2012)
[9] Selection and identification of streptomycin-specific single-stranded DNA aptamers and the application in the detection of streptomycin in honey.
Zhou, N., Wang, J., Zhang, J., Li, C., Tian, Y., & Wang, J.
Talanta, 108, 109–116. (2013)
[10] Tombusvirus Y-shaped translational enhancer forms a complex with eIF4F and can be functionally replaced by heterologous translational enhancers.
Nicholson, B. L., Zaslaver, O., Mayberry, L. K., Browning, K. S., & White, K. A.
Journal of virology, 87(3), 1872–1883. (2013)
[11] Stability of a Split Streptomycin Binding Aptamer.
Nick, T. A., de Oliveira, T. E., Pilat, D. W., Spenkuch, F., Butt, H. J., Helm, M., Netz, P. A., & Berger, R.
The journal of physical chemistry. B, 120(27), 6479–6489. (2016)
[12] Point-of-care testing for streptomycin based on aptamer recognizing and digital image colorimetry by smartphone.
Lin, B., Yu, Y., Cao, Y., Guo, M., Zhu, D., Dai, J., & Zheng, M.
Biosensors & bioelectronics, 100, 482–489. (2018)
[13] Single molecule force spectroscopy of a streptomycin-binding RNA aptamer: An out-of-equilibrium molecular dynamics study.
Baptista, L. A., & Netz, P. A.
The Journal of chemical physics, 151(19), 195102. (2019)
[14] Truncated affinity-improved aptamer for selective and sensitive detection of streptomycin in dairy products with label-free electrochemical aptasensor.
Yuanyuan Hui, Ding Yang, Weizhe Wang, Yingying Liu, Chao He, Bini Wang
Journal of Food Composition and Analysis (2023)
[15] Three-dimensional modeling of streptomycin binding single-stranded DNA for aptamer-based biosensors, a molecular dynamics simulation approach.
Nosrati, M., & Roushani, M.
Journal of biomolecular structure & dynamics, 41(8), 3430–3439. (2023)