Queuine Trna-Ribosyltransferase Catalytic Subunit 1 (QTRT1) Reagents

Queuine tRNA-ribosyltransferase catalytic subunit 1

Catalytic subunit of the queuine tRNA-ribosyltransferase (TGT) that catalyzes the base-exchange of a guanine (G) residue with queuine (Q) at position 34 (anticodon wobble position) in tRNAs with GU(N) anticodons (tRNA-Asp, -Asn, -His and -Tyr), resulting in the hypermodified nucleoside queuosine (7-(((4,5-cis-dihydroxy-2-cyclopenten-1-yl)amino)methyl)-7-deazaguanosine). Catalysis occurs through a double-displacement mechanism. The nucleophile active site attacks the C1' of nucleotide 34 to detach the guanine base from the RNA, forming a covalent enzyme-RNA intermediate. The proton acceptor active site deprotonates the incoming queuine, allowing a nucleophilic attack on the C1' of the ribose to form the product.

Cytoplasm. Mitochondrion outer membrane; Peripheral membrane protein; Cytoplasmic side.

Queuine tRNA-ribosyltransferase family

FP3235; Guanine insertion enzyme; qtrt1; Queuine tRNA ribosyltransferase 1; Queuine tRNA ribosyltransferase; Queuine tRNA-ribosyltransferase; TGT; TGT, 43 KD subunit; TGT, catalytic subunit; TGT_HUMAN; TGUT; tRNA guanine transglycosylase; tRNA-guanine transglycosylase