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R136 Sigma-Aldrich

Ro 31-8220 methanesulfonate salt


Synonym: 2-{1-[3-(Amidinothio)propyl]-1H-indol-3-yl}-3-(1-methylindol-3-yl)maleimide methanesulfonate salt, Bisindoylmaleimidine IX

  • Linear Formula C25H23N5O2S · CH3SO3H

  • Molecular Weight 553.65

  •  MDL number MFCD03788207

  •  PubChem Substance ID 329824000



Biochem/physiol Actions

Inhibitor of GRK-5 (G protein-coupled receptor kinase); PKC (protein kinase C); MAPKAP kinase 1β and p70 S6 kinase.




1, 5 mg in glass bottle

Features and Benefits

This compound is a featured product for Kinase Phosphatase Biology research. Click here to discover more featured Kinase Phosphatase Biology products. Learn more about bioactive small molecules for other areas of research at sigma.com/discover-bsm.

This compound is featured on the GRKs, GSK-3, MAPKAPs and PKC pages of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.

General description

Ro 31-8220 is a bisindolylmaleimide derivative of staurosporine. Ro 31-8220 blocks MAP kinase phosphatase-1 (MKP-1) expression, induces c-Jun expression and stimulates Jun N-terminal Kinase (JNK1). It has immunosuppressive properties.

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 

Milli-Q® Water Purification Solutions
Protocols & Articles


Discover Bioactive Small Molecules for Kinase Phosphatase Biology

Phosphorylation is a ubiquitous cellular regulatory mechanism that mediates signal transduction pathways, which carry signals from the cell surface to the nucleus or cytoplasm, by altering the activi...
Keywords: Apoptosis, Bioactive small molecules, Cancer, Diseases, Inflammation, Metabolism, Neurodegenerative Diseases, Phosphorylations, Transduction

Histone Modification and Chromatin Remodeling

Gene expression is governed by complex mechanisms including transcription factor binding to DNA and coordinated changes in chromatin structure. The primary protein components of chromatin are the his...
Savita Bagga, PhD.
BioFiles v7 n3, 2012, 10–16
Keywords: Acetylations, Amplification, Cancer, Cell culture, Chromatin immunoprecipitation, Cloning, DNA purification, Diseases, Gene expression, Immunoprecipitation, Indicators, Methylations, Microarray Analysis, PAGE, Polymerase chain reaction, Polymerase chain reaction - quantitative, Polymorphisms, Purification, Sequencing, Transcription, Whole genome amplification

Peer-Reviewed Papers


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