Helixyte™ Gold Nucleic Acid Gel Stain 10,000X DMSO Solution

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Telephone	1-800-990-8053
Fax	1-800-609-2943
Email	sales@aatbio.com
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Shipping	Standard overnight for United States, inquire for international

Physical properties

Molecular weight	749.48
Solvent	DMSO

Spectral properties

Excitation (nm)	496
Emission (nm)	539

Storage, safety and handling

H-phrase	H303, H313, H340
Hazard symbol	T
Intended use	Research Use Only (RUO)
R-phrase	R20, R21, R68
Storage	Freeze (< -15 °C); Minimize light exposure
UNSPSC	41116134

Overview SDS Protocol

Molecular weight

749.48

Excitation (nm)

496

Emission (nm)

539

Helixyte™ Gold is manufactured by AAT Bioquest, and it has the same chemical structure of SYBR® Gold (SYBR® is the trademark of ThermoFisher). Helixyte™ Gold is an excellent nucleic acid gel stain, and exhibits large fluorescence enhancement upon binding to nucleic acids. It has the same spectral properties to those of SYBR® Gold, thus a great replacement to SYBR® Gold (SYBR® Gold is the trademark of ThermoFisher). It is one of the most sensitive stains available for detecting DNA in agarose and polyacrylamide gels. Helixyte™ Gold has higher sensitivity for DNA than RNA, and is ideal for use with laser scanners with the same instrument settings of SYBR Gold. Helixyte™ Gold is much more sensitive than ethidium bromide for DNA in agarose gels, and it can detect as low as picogram dsDNA on gels.

Example protocol

AT A GLANCE

Spectral Properties of Helixyte™ Gold
Excitation/Emission: 495/540 nm
Important Helixyte™ Gold nucleic acid gel stain is significantly less mutagenic than ethidium bromide. However, we must caution that no data are available on the mutagenicity or toxicity of Helixyte™ Gold stain in humans. It should be treated as a potential mutagen and used with appropriate care due to the fact that this reagent binds to nucleic acids. The disposing of the stain shall be in compliance with local regulations.
We have found the greatest sensitivity is achieved by post-staining which also eliminates the possibility of dye interference with DNA migration. While the precast protocol is more convenient, some DNA samples may experience migration, it is highly recommended the gel running time does not exceed more than 2 hours. The following protocols are recommended. However, some comparisons might be needed to determine which one better meets your needs.

PREPARATION OF WORKING SOLUTION

Helixyte™ Gold working solution (1X)

Make 1X Helixyte™ Gold working solution by diluting the 10,000X stock reagent into pH 7.5 - 8 buffer (e.g., TAE, TBE or TE, preferably pH 8.0).
Note Staining solutions prepared in water are less stable than those prepared in buffer and must be used within 24 hours to ensure maximal staining sensitivity.
Note In addition, staining solutions prepared in buffers with pH below 7.5 or above 8.0 are less stable and show reduced staining efficacy.

SAMPLE EXPERIMENTAL PROTOCOL

Post-Staining Protocol

Run gels based on your standard protocol.
Place the gel in a suitable polypropylene container. Gently add a sufficient amount of the 1X Helixyte™ Gold working solution to submerge the gel.
Note Do not use a glass container, as it will adsorb much of the dye in the staining solution.
Agitate the gel gently at room temperature for ~30 minutes, protected from the light.
Note The staining solution can be stored in the dark (preferably refrigerated) for a week and reused up to 2 - 3 times.
Image the stained gel with a 254 nm transilluminator or a laser-based gel scanner using a long path green filter, such as a SYBR® filter or GelStar® filter.

Pre-Casting Protocol

Prepare agarose gel solution using your standard protocol.
Add 1X Helixyte™ Gold working solution to the gel and mix thoroughly.
Run gels based on your standard protocol.
Image the stained gel with a 254 nm transilluminator or a laser-based gel scanner using a long path green filter, such as a SYBR® filter or GelStar® filter.

DNA-Staining Before Electrophoresis

Incubate DNA with a 1:1000 to 1:3000 dilution of the dye (in TE, TBE, or TAE) for at least 15 minutes prior to electrophoresis.
Run gels based on your standard protocol.
Image the stained gel with a 254 nm transilluminator, or a laser-based gel scanner using a long path green filter such as a SYBR® filter or GelStar® filter.

Calculators

Common stock solution preparation

Table 1. Volume of DMSO needed to reconstitute specific mass of Helixyte™ Gold Nucleic Acid Gel Stain *10,000X DMSO Solution* to given concentration. Note that volume is only for preparing stock solution. Refer to sample experimental protocol for appropriate experimental/physiological buffers.

	0.1 mg	0.5 mg	1 mg	5 mg	10 mg
1 mM	133.426 µL	667.129 µL	1.334 mL	6.671 mL	13.343 mL
5 mM	26.685 µL	133.426 µL	266.852 µL	1.334 mL	2.669 mL
10 mM	13.343 µL	66.713 µL	133.426 µL	667.129 µL	1.334 mL

Molarity calculator

Enter any two values (mass, volume, concentration) to calculate the third.

Mass (Calculate)		Molecular weight		Volume (Calculate)		Concentration (Calculate)		Moles
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Spectrum

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Spectral properties

Excitation (nm)	496
Emission (nm)	539

Product Family

Name	Excitation (nm)	Emission (nm)
Helixyte™ Green Nucleic Acid Gel Stain 10,000X DMSO Solution	498	522

Images

Figure 1. 160 ng of 1 Kb Plus DNA Ladder (ThermoFisher 10787018) in 0.9% agarose/TBE electrophoresis gel were stained with Helixyte™ Gold and SYBR® Gold and imaged with 254-nm UV transilluminator using UVP Bioimaging System.

References

View all 79 references: Citation Explorer

SYBR green real-time PCR for the detection of all enterovirus-A71 genogroups
Authors: Dubot-Peres A, Tan CY, de Chesse R, Sibounheuang B, Vongsouvath M, Phommasone K, Bessaud M, Gazin C, Thirion L, Phetsouvanh R, Newton PN, de Lamballerie X.
Journal: PLoS One (2014): e89963

Development of loop-mediated isothermal amplification and SYBR green real-time PCR methods for the detection of Citrus yellow mosaic badnavirus in citrus species
Authors: Anthony Johnson AM, Dasgupta I, Sai Gopal DV.
Journal: J Virol Methods (2014): 9

Development of both multiple PCR and real-time SYBR green PCR for the detection of Vibrio cholerae non-O1/O139 serogroups
Authors: Li F, Kan B, Wang D.
Journal: Zhonghua Liu Xing Bing Xue Za Zhi (2014): 66

Detection of Cardamom mosaic virus and Banana bract mosaic virus in cardamom using SYBR Green based reverse transcription-quantitative PCR
Authors: Siljo A, Bhat AI, Biju CN.
Journal: Virusdisease (2014): 137

Comparison of SYBR Green and TaqMan methods in quantitative real-time polymerase chain reaction analysis of four adenosine receptor subtypes
Authors: Tajadini M, Panjehpour M, Javanmard SH.
Journal: Adv Biomed Res (2014): 85

Development of a High-resolution Melting Analysis Method Based on SYBR Green-I for rs7216389 Locus Genotyping in Asthmatic Child Patients
Authors: Vali Z, Raz A, Bokharaei H, Nabavi M, Bemanian MH, Yazdi MS, Djadid ND.
Journal: Avicenna J Med Biotechnol (2014): 72

Primer evaluation and adaption for cost-efficient SYBR Green-based qPCR and its applicability for specific quantification of methanogens
Authors: Reitschuler C, Lins P, Illmer P.
Journal: World J Microbiol Biotechnol (2014): 293

Development and comparative evaluation of SYBR Green I-based one-step real-time RT-PCR assay for detection and quantification of West Nile virus in human patients
Authors: Kumar JS, Saxena D, Parida M.
Journal: Mol Cell Probes. (2014)

Multiplex SYBR(R) green-real time PCR (qPCR) assay for the detection and differentiation of Bartonella henselae and Bartonella clarridgeiae in cats
Authors: Staggemeier R, Pilger DA, Spilki FR, Cantarelli VV.
Journal: Rev Inst Med Trop Sao Paulo (2014): 93

Development and evaluation of SYBR Green-I based quantitative PCR assays for herpes simplex virus type 1 whole transcriptome analysis
Authors: Garvey CE, McGowin CL, Foster TP.
Journal: J Virol Methods (2014): 101