Protein Summary

TsaC from Escherichia coli

Full name: tRNA N6-threonylcarbamoyladenosine(37) synthesis protein
Synonym: RimN, yrdC
GI: 2851671
Orf:
COG: COG0009
UniProt: P45748
Structures: | 1HRU |
Complex:
Enzyme type: threonylcarbamoyladenosine synthetase
Position of modification - modification: t:37 - t6A

Comments:

TsaC, the bacterial ortholog of eukaryal and archaeal Sua5, is an ATPase (produces AMP) that binds A37-containing tRNA, but not threonine. Together with 3 other proteins (TsaD=YgjD, TsaB=YeaZ and TsaE=YjeE), ATP, threonine and bicarbonate as cofactors, they catalyze the in vitro formation of t6A (threonyl-carbamoylation) at position 37 of all bacterial tRNA decoding ANN codons (ile, Met, Thr, Lys, Asn, Ser and Arg). However the detailed stepwise mechanism of t6A formation is still not known (March 2012).

Protein sequence:

MNNNLQRDAIAAAIDVLNEERVIAYPTEAVFGVGCDPDSETAVMRLLELK
QRPVDKGLILIAANYEQLKPYIDDTMLTDVQRETIFSRWPGPVTFVFPAP
ATTPRWLTGRFDSLAVRVTDHPLVVALCQAYGKPLVSTSANLSGLPPCRT
VDEVRAQFGAAFPVVPGETGGRLNPSEIRDALTGELFRQG

Publications

Title Authors Journal Details PubMed Id DOI
The structure of the yrdC gene product from Escherichia coli reveals a new fold and suggests a role in RNA binding. Teplova M, Tereshko V, Sanishvili R, Joachimiak A, Bushueva T, Anderson WF, Egli M Protein Sci [details] 11206077 -
The universal YrdC/Sua5 family is required for the formation of threonylcarbamoyladenosine in tRNA. El Yacoubi B, Lyons B, Cruz Y, Reddy R, Nordin B, Agnelli F, Williamson JR, Schimmel P, Swairjo MA, de Crecy-Lagard V Nucleic Acids Res [details] 19287007 -
YrdC exhibits properties expected of a subunit for a tRNA threonylcarbamoyl transferase. Harris KA, Jones V, Bilbille Y, Swairjo MA, Agris PF RNA [details] 21775474 -
Biosynthesis of threonylcarbamoyl adenosine (t6A), a universal tRNA nucleoside. Deutsch C, El Yacoubi B, de Crecy-Lagard V, Iwata-Reuyl D J Biol Chem [details] 22378793 -

Links

_EcoCyc_

Last modification of this entry: 2012-07-04 13:38:15.379292
Edited by a user: magda
Edited content: Changed protein_sequence, if_enzyme, nomenclature and comments.