Introduction

With the new Ras G-LISA™ kit you can now measure Ras activation from cell and tissue samples in less than 3 h.  G-LISA™ requires only 1-5% of the material needed for a conventional pull-down assay.  You will also be able to handle large sample numbers and generate quantitative results.  For a more detailed introduction on G-LISA™ assays and a listing of other available G-LISA™ kits, see our main G-LISA™ page.

The Ras G-LISA™ kit contains a Ras GTP-binding protein linked to the wells of a 96 well plate. Active, GTP-bound Ras in cell/tissue lysates will bind to the wells while inactive GDP-bound Ras is removed during washing steps.  The bound active Ras is detected with a Ras specific antibody.  The degree of Ras activation is determined by comparing readings from activated cell lysates versus non-activated cell lysates.  Inactivation of Ras is generally achieved in tissue culture by a serum starvation step (see kit datasheet for more information).  

Kit contents

The kit contains sufficient reagents to perform 96 Ras activation assays. Since the Ras-GTP affinity wells are supplied as strips and the strips can be broken into smaller pieces, each kit can be used for anywhere from one to multiple assays. The following components are included in the kit: 

1. 96 Ras-GTP affinity wells (divisible into 12 strips of 8 wells each)
2. Lysis buffer
3. Binding buffer
4. Antigen presenting buffer
5. Wash buffer
6. Antibody dilution buffer
7. Anti-Ras antibody
8. HRP-labeled secondary antibody
9. Positive control Ras protein
10. Protease inhibitor cocktail (Cat. # PIC02)
11. Absorbance detection reagents
12. Precision Red™ Advanced protein assay reagent (Cat. # ADV02)
13. Manual with detailed protocols and extensive troubleshooting guide

    Equipment needed

14. 96-well plate spectrophotometer capable of reading 490 nm wavelength
15. Multichannel or multidispensing pipettor
16. Orbital microplate shaker capable of at least 200 rpm shaking (400 rpm is optimal)

Example results