UGA codon-amino acid adaptor activity

A triplet codon-amino acid adaptor activity that recognizes a UGA codon.

conversion of seryl-tRNAsec to selenocys-tRNAsec

The modification process that results in the conversion of serine, carried by a specialized tRNA(ser) (which can read a UGA anticodon), to selenocysteine.

selenocysteine insertion sequence binding

Binding to a selenocysteine insertion sequence (SECIS), a regulatory sequence within mRNA which directs incorporation of a selenocysteine at a stop codon (UGA) during translation.

translational termination

The process resulting in the release of a polypeptide chain from the ribosome, usually in response to a termination codon (UAA, UAG, or UGA in the universal genetic code).

translational readthrough

The continuation of translation beyond a stop codon by the use of a special tRNA that recognizes the UAG and UGA codons as modified amino acids, rather than as termination codons.

viral translational readthrough

The continuation of translation of a viral mRNA beyond a stop codon by the use of a special tRNA that recognizes the UAG and UGA codons as modified amino acids, rather than as termination codons.

selenocysteine incorporation

The incorporation of selenocysteine into a peptide; uses a special tRNA that recognizes the UGA codon as selenocysteine, rather than as a termination codon. Selenocysteine is synthesized from serine before its incorporation; it is not a posttranslational modification of peptidyl-cysteine.

sulfiredoxin activity

Catalysis of the reaction: peroxiredoxin-(S-hydroxy-S-oxocysteine) + ATP + 2 R-SH = peroxiredoxin-(S-hydroxycysteine) + ADP + phosphate + R-S-S-R.

eriodictyol 3'-O-methyltransferase activity

Catalysis of the reaction: (S)-eriodictyol + S-adenosyl-L-methionine = (S)-homoeriodictyol + H+ + S-adenosyl-L-homocysteine.

(S)-coclaurine-N-methyltransferase activity

Catalysis of the reaction: S-adenosyl-L-methionine + (S)-coclaurine = S-adenosyl-L-homocysteine + (S)-N-methylcoclaurine.