[WM1000] YesBlot™ Western Marker I, 250 μl

Call For Price



YesBlot™ Western Marker I is a ready-to-use mixture with ten IgG-binding proteins covering a wide range of molecular weights from 15 to 200 kDa in Tris-Glycine buffer. YesBlot™ Western Marker I performs dual functions. First, it contains 4 pre-stained proteins (10, 25, 45 and 70 kDa) for monitoring protein separation during SDS-PAGE, verification of Western transfer efficiency on membranes (nitrocellulose, PVDF, or nylon) and for approximating the protein size. Second, ten IgG-binding proteins can be immuno-detected on film or by CCD imaging. YesBlot™ Western Marker I is compatible for chemiluminescent, fluorescent, chromogenic or other detection systems. In addition, YesBlot™ Western Marker I has two reference bands with enhanced intensity (at 30 kDa and 80 kDa). The marker is supplied in the gel loading buffer and is ready to use. Do NOT heat, dilute, or add reducing agents before loading. 


  • Direct visualization — 10 IgG-binding proteins for direct visualization on Western blots

  • Pre-stained bands — 4 prestained proteins for monitoring protein separation during electrophoresis and Western blotting transferring efficiency on membrane

  • Wide range — 10 clear bands from 15 to 200 kDa for size estimation

  • Quick reference — two enhanced bands (30 and 80 kDa)


The YesBlot™ Western Marker I contains recombinant IgG binding proteins, prestained recombinant proteins, glycerol and SDS. 


4°C for 3 months
-20°C for 24 months



Cat. No.


Series Name


Product Size

250 μl

MW Range (Western Bands)

15 – 200 kDa

MW Range (Pre-stained Bands)

10 – 70 kDa

Band Number (Western Bands)


Band Number (Pre-stained Bands)

Pre-stained Band Color


Technical information

Principle of YesBlot™ Western Marker I




Manual_WM1000_YesBlot™ Western Marker I (2023 ver. 2.5.0)




Western Marker- Powerful for Western Data Credibility

Migration patterns and approximate MWs (kDa) of pre-stained bands


Immunoglobulin Y Specific for SARS-CoV-2 Spike Protein Subunits Effectively Neutralizes SARS-CoV-2 Infectivity and Ameliorates Disease Manifestations In Vivo

Chia-Tsui Yeh, Chia-Ying Lee, Yi-Jung Ho, Sin-An Chen, Liang-Yu Chen, Ping-Cheng Liu, Yuan-Fan Chin, An-Yu Chen, Po-Shiuan Hsieh, Yi-Jen Hung, Cheng-Cheung Chen, Yu-Chie Wang, Guan-Chiun Lee

Biomedicines. 2022 Nov; 10(11): 2774. Published online 2022 Nov 1. doi: 10.3390/biomedicines10112774

PMCID: PMC9687769

Odoo - Sample 1 for three columns

ExcelBand™ Protein Markers

  • Ready-to-use— premixed with a loading buffer for direct loading, no need to boil

  • Broad range310 kDa to 5 kDa

  • Pre-stained bands for monitoring protein separation during electrophoresis and Western blotting transferring efficiency on membrane

  • Enhanced bands— for quick reference

Odoo - Sample 2 for three columns

Q-PAGE™ Precast Gels

  • User-friendly gel cassette:

    • Numbered and framed wells for sample loading

    • Labeled warning sign and green tape as reminder

  • Enhanced gel performance: 

    • Enhanced gel electrophoresis speed 

    • Better band separation 

    • Stable for shipping at ambient temperature

  • Easy compatibility: 

    • Available as homogeneous and adjusted gradient gels for a wide range of protein separation.

    • Compatible with most popular protein electrophoresis systems