Beta-actin: a regulator of NOS-3.

Yunchao Su, Dmitry Yuryevich Kondrikov, Edward R. Block

Research output: Contribution to journalReview articlepeer-review

14 Scopus citations


Beta-actin is traditionally considered a structural protein that organizes and maintains the shape of nonmuscle cells, although data now indicate that beta-actin is also a signaling molecule. beta-actin is directly associated with nitric oxide synthase type 3 (NOS-3) in endothelial cells and platelets, and this interaction increases NOS-3 activity and the affinity of NOS-3 for heat shock protein 90 kD (Hsp90). The beta-actin-induced increase in NOS-3 activity may be caused directly by beta-actin, the binding of Hsp90 to NOS-3, or both. Alterations in the interaction between beta-actin and NOS-3 could be caused by changes either in the availability of beta-actin or in the affinity of NOS-3 for beta-actin, and these alterations probably contribute to vascular complications and platelet aggregation. Studies examining the interactions between NOS-3, beta-actin, and Hsp90 could potentially lead to the discovery of effective peptides for the treatment of diseases associated with impaired NOS-3 activity and nitric oxide release, such as systemic and pulmonary hypertension, atherosclerosis, and thrombotic diseases.

Original languageEnglish (US)
JournalScience's STKE : signal transduction knowledge environment
Issue number404
StatePublished - Jan 1 2007

ASJC Scopus subject areas

  • Medicine(all)


Dive into the research topics of 'Beta-actin: a regulator of NOS-3.'. Together they form a unique fingerprint.

Cite this