4ymy

Structural highlights

Function

NB_ARATH Heme-binding protein able to scavenge peroxynitrite and to protect free L-tyrosine against peroxynitrite-mediated nitration, by acting as a peroxynitrite isomerase that converts peroxynitrite to nitrate. Therefore, this protein likely plays a role in peroxynitrite sensing and in the detoxification of reactive nitrogen and oxygen species (RNS and ROS, respectively) (PubMed:32295384). Is able to bind nitric oxide (NO) in vitro, but may act as a sensor of peroxynitrite levels in vivo (PubMed:32295384, PubMed:19938152).^{[1] [2]}

References

1. ↑ Bianchetti CM, Blouin GC, Bitto E, Olson JS, Phillips GN Jr. The structure and NO binding properties of the nitrophorin-like heme-binding protein from Arabidopsis thaliana gene locus At1g79260.1. Proteins. 2010 Mar;78(4):917-31. PMID:19938152 doi:10.1002/prot.22617
2. ↑ De Simone G, di Masi A, Vita GM, Polticelli F, Pesce A, Nardini M, Bolognesi M, Ciaccio C, Coletta M, Turilli ES, Fasano M, Tognaccini L, Smulevich G, Abbruzzetti S, Viappiani C, Bruno S, Ascenzi P. Mycobacterial and human nitrobindins: structure and function. Antioxid Redox Signal. 2020 Apr 16. doi: 10.1089/ars.2019.7874. PMID:32295384 doi:http://dx.doi.org/10.1089/ars.2019.7874