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 ?
In spite of the commonly used A-site and/or B-site partial substitution-doping modification, another effective way that is attracting increasing attention is to amend the surface redox chemistry and oxygen deficiency of perovskite oxides via getting A-site cationic deficiencies introduced into their lattice structure.
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.
In case of BNT, the bismuth and sodium ions are on the A-site and titanium ions are on the B-site of the structure; this is only to show the stoichiometry that is present in an ideal mixture.
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].
The intensity of lines 2 and 5 of the A-site component is negligible, whereas the relative areas of lines 2 and 5 for the B-site component were p [approximately equal to] 0.55, corresponding to an average canting angle, [theta] [approximately equal to] 29[degrees] for the B-site spins.
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.
Mixed domains with both A sites and B sites introduce movement out of the plane (elevating B-site molecules) that releases strain built up in pure A-site domains.
In our previous study, it was found that the oxygen deficiency significantly affected the A-site of Sr atoms more than that of Ba atoms and the modified A/B-site of BST powders influenced the phase structure [3].