logo
AAT Bioquest

Cy5®-streptavidin conjugate

Streptavidin conjugates are widely used together with a conjugate of biotin for specific detection of a variety of proteins, protein motifs, nucleic acids and other molecules since streptavidin has a very high binding affinity for biotin. This Cy5-streptavidin conjugate comprises streptavidin (as the biotin-binding protein) with Cy5 covalently attached (as the fluorescent label). Our Cy5-streptavidin conjugate was prepared using AAT Bioquest's proprietary labeling technology. It demonstrated much brighter signal compared to the similar Cy5-streptavidin conjugates from other commercial sources, thus can significantly increase assay sensitivities. It is commonly used as a second step reagent for indirect immunofluorescent staining, when used in conjunction with biotinylated primary antibodies. It is a valuable tool for biotin-streptavidin-based biological assays and tests using flow cytometry with a Cy5 filter set. A variety of the complementary biotinylated reagents are available from numerous commercial vendors.

Spectrum

Product family

NameExcitation (nm)Emission (nm)Extinction coefficient (cm -1 M -1)Quantum yieldCorrection Factor (260 nm)Correction Factor (280 nm)
Cy5 biotin conjugate65167025000010.271, 0.420.020.03
RPE-streptavidin conjugate56557419600000.82-0.175
APC-streptavidin conjugate651660730000--0.195
PerCP-streptavidin conjugate477678406000--0.22
FITC-streptavidin conjugate491516730000.92-0.35
Cy3®-streptavidin conjugate55556915000010.1510.070.073
Cy7®-streptavidin conjugate7567792500000.30.050.036
XFD350-streptavidin conjugate *XFD350 Same Structure to Alexa Fluor™ 350*34344119000-0.250.19
XFD488-streptavidin conjugate *XFD488 Same Structure to Alexa Fluor™ 488*499520730000.9210.30.11
XFD594-streptavidin conjugate *XFD594 Same Structure to Alexa Fluor™ 594*590618920000.6610.430.56
Show More (1)

Citations

View all 1 citations: Citation Explorer
Overexpression of MACC1 and the association with hepatocyte growth factor/c-Met in epithelial ovarian cancer
Authors: Li, Hongyu and Zhang, Hui and Zhao, Shujun and Shi, Yun and Yao, Junge and Zhang, Yanyan and Guo, Huanhuan and Liu, Xingsuo
Journal: Oncology letters (2015): 1989--1996

References

View all 47 references: Citation Explorer
A streptavidin paramagnetic-particle based competition assay for the evaluation of the optical selectivity of quadruplex nucleic acid fluorescent probes
Authors: Largy E, Hamon F, Teulade-Fichou MP.
Journal: Methods. (2012)
Biotin-4-fluorescein based fluorescence quenching assay for determination of biotin binding capacity of streptavidin conjugated quantum dots
Authors: Mittal R, Bruchez MP.
Journal: Bioconjug Chem (2011): 362
Iminobiotin binding induces large fluorescent enhancements in avidin and streptavidin fluorescent conjugates and exhibits diverging pH-dependent binding affinities
Authors: Raphael MP, Rappole CA, Kurihara LK, Christodoulides JA, Qadri SN, Byers JM.
Journal: J Fluoresc (2011): 647
Streptavidin-Binding Peptide (SBP)-tagged SMC2 allows single-step affinity fluorescence, blotting or purification of the condensin complex
Authors: Kim JH, Chang TM, Graham AN, Choo KH, Kalitsis P, Hudson DF.
Journal: BMC Biochem (2010): 50
Determination of 17beta-oestradiol by fluorescence immunoassay with streptavidin-conjugated quantum dots as label
Authors: Sun M, Du L, Gao S, Bao Y, Wang S.
Journal: Steroids (2010): 400
Page updated on December 11, 2024

Ordering information

Price
Unit size
Catalog Number16913
Quantity
Add to cart

Additional ordering information

Telephone1-800-990-8053
Fax1-800-609-2943
Emailsales@aatbio.com
InternationalSee distributors
Bulk requestInquire
Custom sizeInquire
Technical SupportContact us
Purchase orderSend to sales@aatbio.com
ShippingStandard overnight for United States, inquire for international
Request quotation

Physical properties

Molecular weight

~52000

Solvent

Water

Spectral properties

Correction Factor (260 nm)

0.02

Correction Factor (280 nm)

0.03

Correction Factor (482 nm)

0.009

Correction Factor (565 nm)

0.09

Extinction coefficient (cm -1 M -1)

2500001

Excitation (nm)

651

Emission (nm)

670

Quantum yield

0.271, 0.42

Storage, safety and handling

Certificate of OriginDownload PDF
H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22

Storage

Freeze (< -15 °C); Minimize light exposure
UNSPSC12352200
HeLa cells were incubated with mouse anti-tubulin and biotin goat anti-mouse IgG followed by Cy5&reg;-streptavidin conjugate (Red). Cell nuclei were stained with Hoechst 33342 (Blue, Cat#17530).
HeLa cells were incubated with mouse anti-tubulin and biotin goat anti-mouse IgG followed by Cy5&reg;-streptavidin conjugate (Red). Cell nuclei were stained with Hoechst 33342 (Blue, Cat#17530).
HeLa cells were incubated with mouse anti-tubulin and biotin goat anti-mouse IgG followed by Cy5&reg;-streptavidin conjugate (Red). Cell nuclei were stained with Hoechst 33342 (Blue, Cat#17530).