A-site

A-site (acceptor-, amino acid-, aminoacyl-site)

the site for TRANSFER RNA on the RIBOSOME; the location at which specific transfer RNA molecules become attached to the ribosome during PROTEIN SYNTHESIS. At this site the next CODON on mRNA is exposed for TRANSLATION.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
Moreover, a new line appears at about 117 [cm.sup.-1] for 0.95BT-0.05PZN (indicated by arrow), which may be evidence of a structural change associated with the A-site symmetry change.
Aminoglycoside antibiotics exert their antibacterial activity by binding to 16S ribosomal RNA at the tRNA acceptor A-site (aminoacyl site), and affect the ability of the ribosome to decode mRNA correctly during protein synthesis [3].
Tetracycline, a broad-spectrum antibiotic, binds primarily at the A-site as well as at several secondary sites.
Indeed, rather than negative feedback from B sites upon A-site output, we see positive amplification of B-site output by A-site surplus.
In 1993-94, the school piloted a new program in which grade information compiled in grade2 is transferred directly to A-SITE, a mainframe computer system that sends data to the district head office for report card generation.