======= QTRT1 ======= == Gene Information == * **Official Symbol**: QTRT1 * **Official Name**: queuine tRNA-ribosyltransferase catalytic subunit 1 * **Aliases and Previous Symbols**: N/A * **Entrez ID**: [[https://www.ncbi.nlm.nih.gov/gene/?term=81890|81890]] * **UniProt**: [[https://www.uniprot.org/uniprot/Q9BXR0|Q9BXR0]] * **Interactions**: [[https://thebiogrid.org/search.php?search=QTRT1&organism=9606|BioGRID]] * **PubMed articles**: [[https://www.ncbi.nlm.nih.gov/pubmed/?term=gene%20QTRT1|Open PubMed]] * **OMIM**: [[https://omim.org/entry/609615|Open OMIM]] == Function Summary == * **Entrez Summary**: N/A * **UniProt Summary**: 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) (PubMed:11255023, PubMed:20354154). 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 (By similarity). {ECO:0000250|UniProtKB:P28720, ECO:0000255|HAMAP- Rule:MF_03218, ECO:0000269|PubMed:11255023, ECO:0000269|PubMed:20354154}. |TGT| |queuine tRNA-ribosyltransferase activity| |tRNA-guanine transglycosylation| |tRNA modification| |tRNA processing| |mitochondrial outer membrane| |RNA modification| |tRNA metabolic process| |ncRNA processing| |ncRNA metabolic process| |protein heterodimerization activity| |protein-containing complex| |RNA processing| |protein homodimerization activity| |RNA metabolic process| |gene expression| \\ === CRISPR Data === ^Screen^Score^ |[[:results:exp41|BI-2536 0.001μM R01 exp41]]|1.7| |[[:results:exp29|Rapamycin 1μM R00 exp29]]|2.02| |[[:results:exp422|Wiskostatin 3μM R07 exp422]]|2.43| No correlation found to any other genes in chemogenomics. Global Fraction of Cell Lines Where Essential: 0/739 ^Tissue^Fraction Of Cell Lines Where Essential^ |1290807.0|0/1| |909776.0|0/1| |bile duct|0/28| |blood|0/28| |bone|0/26| |breast|0/33| |central nervous system|0/56| |cervix|0/4| |colorectal|0/17| |esophagus|0/13| |fibroblast|0/1| |gastric|0/16| |kidney|0/21| |liver|0/20| |lung|0/75| |lymphocyte|0/16| |ovary|0/26| |pancreas|0/24| |peripheral nervous system|0/16| |plasma cell|0/15| |prostate|0/1| |skin|0/24| |soft tissue|0/9| |thyroid|0/2| |upper aerodigestive|0/22| |urinary tract|0/29| |uterus|0/5| == Essentiality in NALM6 == * **Essentiality Rank**: 7725 * **Expression level (log2 read counts)**: 5.49 {{:chemogenomics:nalm6 dist.png?nolink |}}