Words similar to psittaci

Example sentences for: psittaci

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As C. psittaci has trpR, it seems quite possible that the trp operon, sstT (for serine transport), and tyrP (for tryptophan transport) might comprise a regulon controlled by the trpR repressor.
Two changes in C. psittaci, not present in the other two chlamydial species (V292 → T292 and S429 → T429) are conservative changes that are presumably tolerated.
It is also noteworthy that only C. psittaci has PRPP synthase, which is needed for provision of PRPP (TrpB step).
Comparison of these sequences with that of the well studied TrpEa from Salmonella typhimurium shows C. trachomatis TrpEa (but not C. psittaci TrpEa) to have the following changes at critical residues ( S. typhimurium numbering): G61 → N61, G211 → R211, F/L212 → R212, and G234 → K234.
Because the presence of the tryptophan-pathway enzymes varies so markedly, even between closely related stains, one cannot be certain at this point that the tryptophan-recapture cycle is uniquely characteristic of C. psittaci.