Hydration of Protein-RNA Recognition Sites
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We investigate the role of water molecules in 89 protein-RNA complexes taken from the Protein Data Bank. Those with tRNA and single-stranded RNA are less hydrated than with duplex or ribosomal proteins. Protein-RNA interfaces are hydrated less than protein-DNA interfaces, but more than protein-protein interfaces. Majority of the waters at protein-RNA interfaces makes multiple H-bonds; however, a fraction do not make any. Those making H-bonds have preferences for the polar groups of RNA than its partner protein. The spatial distribution of waters makes interfaces with ribosomal proteins and single-stranded RNA relatively 'dry' than interfaces with tRNA and duplex RNA. In contrast to protein-DNA interfaces, mainly due to the presence of the 2'OH, the ribose in protein-RNA interfaces is hydrated more than the phosphate or the bases. The minor groove in protein-RNA interfaces is hydrated more than the major groove, while in protein-DNA interfaces it is reverse. The strands make the highest number of water-mediated H-bonds per unit interface area followed by the helices and the non-regular structures. The preserved waters at protein-RNA interfaces make higher number of H-bonds than the other waters. Preserved waters contribute toward the affinity in protein-RNA recognition and should be carefully treated while engineering protein-RNA interfaces.
Jangra R, Trant J, Sharma P NAR Genom Bioinform. 2024; 6(4):lqae161.
PMID: 39664815 PMC: 11632616. DOI: 10.1093/nargab/lqae161.
Ghosh S, Takahashi S, Ohyama T, Liu L, Sugimoto N J Am Chem Soc. 2024; 146(47):32479-32497.
PMID: 39505325 PMC: 11613987. DOI: 10.1021/jacs.4c09388.
A structural dissection of protein-RNA interactions based on different RNA base areas of interfaces.
Hu W, Qin L, Li M, Pu X, Guo Y RSC Adv. 2022; 8(19):10582-10592.
PMID: 35540439 PMC: 9078961. DOI: 10.1039/c8ra00598b.
PredPRBA: Prediction of Protein-RNA Binding Affinity Using Gradient Boosted Regression Trees.
Deng L, Yang W, Liu H Front Genet. 2019; 10:637.
PMID: 31428122 PMC: 6688581. DOI: 10.3389/fgene.2019.00637.
A structure-based model for the prediction of protein-RNA binding affinity.
Nithin C, Mukherjee S, Bahadur R RNA. 2019; 25(12):1628-1645.
PMID: 31395671 PMC: 6859855. DOI: 10.1261/rna.071779.119.