[Specific arginine mediated RNA recognition].
In many biological systems substantial roles are played by interactions between amino acids and RNA. Among amino acids L-arginine seems to be particularly relevant, because the guanidinium group of arginine side chain can potentially form five hydrogen bonds with appropriately positioned acceptor groups of RNA. Extensive studies reveal that specific arginine recognition is achieved by many different RNAs over a broad range of binding affinities. Arginine is frequently found among amino acids in the nucleic acid-binding motifs in various proteins. For example, specific binding of the HIV-1 Tat protein to its RNA site (TAR) is mediated by a single arginine residue. Free arginine can be also bound by the guanosine site in the group I Tetrahymena ribosomal RNA intron catalytic centre, as well as by numerous RNA motifs, called arginine aptamers, which have been selected in vitro.
Błachnio
Karina
K
Instytut Biochemii i Biofizyki, Polska Akademia Nauk, Zakład Biosyntezy Białka, ul. Pawińskiego 5A, 02-106 Warszawa. karabo@ibb.waw.pl
Przykorska
Anna
A
D000818:Animals; D001120:Arginine / Q000378:metabolism*; D001483:Base Sequence; D015694:Gene Products, rev / Q000737:chemistry; D016370:Gene Products, rex / Q000737:chemistry; D015696:Gene Products, tat / Q000737:chemistry; D006151:Guanosine / Q000378:metabolism; D006801:Humans; D008969:Molecular Sequence Data; D009690:Nucleic Acid Conformation; D011485:Protein Binding; D012313:RNA / Q000737:chemistry / Q000378:metabolism*; D016601:RNA-Binding Proteins / Q000378:metabolism*; D020218:Response Elements / Q000502:physiology
D015694:Gene Products, rev; D016370:Gene Products, rex; D015696:Gene Products, tat; D016601:RNA-Binding Proteins; D006151:Guanosine; D012313:RNA; D001120:Arginine