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The other activity is designated 'posttransfer' editing and involves deacylation of mischarged Val-tRNA(Ile)"}],"commentType":"FUNCTION"},{"commentType":"CATALYTIC ACTIVITY","reaction":{"name":"tRNA(Ile) + L-isoleucine + ATP = L-isoleucyl-tRNA(Ile) + AMP + diphosphate","reactionCrossReferences":[{"database":"Rhea","id":"RHEA:11060"},{"database":"Rhea","id":"RHEA-COMP:9666"},{"database":"Rhea","id":"RHEA-COMP:9695"},{"database":"ChEBI","id":"CHEBI:30616"},{"database":"ChEBI","id":"CHEBI:33019"},{"database":"ChEBI","id":"CHEBI:58045"},{"database":"ChEBI","id":"CHEBI:78442"},{"database":"ChEBI","id":"CHEBI:78528"},{"database":"ChEBI","id":"CHEBI:456215"}],"ecNumber":"6.1.1.5","evidences":[{"evidenceCode":"ECO:0000256","source":"ARBA","id":"ARBA00048359"},{"evidenceCode":"ECO:0000256","source":"HAMAP-Rule","id":"MF_02002"}]}},{"commentType":"COFACTOR","cofactors":[{"name":"Zn(2+)","evidences":[{"evidenceCode":"ECO:0000256","source":"HAMAP-Rule","id":"MF_02002"}],"cofactorCrossReference":{"database":"ChEBI","id":"CHEBI:29105"}}],"note":{"texts":[{"evidences":[{"evidenceCode":"ECO:0000256","source":"HAMAP-Rule","id":"MF_02002"}],"value":"Binds 1 zinc ion per subunit."}]}},{"texts":[{"evidences":[{"evidenceCode":"ECO:0000256","source":"HAMAP-Rule","id":"MF_02002"}],"value":"Monomer"}],"commentType":"SUBUNIT"},{"commentType":"SUBCELLULAR LOCATION","subcellularLocations":[{"location":{"evidences":[{"evidenceCode":"ECO:0000256","source":"HAMAP-Rule","id":"MF_02002"}],"value":"Cytoplasm","id":"SL-0086"}}]},{"texts":[{"evidences":[{"evidenceCode":"ECO:0000256","source":"HAMAP-Rule","id":"MF_02002"}],"value":"IleRS has two distinct active sites: one for aminoacylation and one for editing. The misactivated valine is translocated from the active site to the editing site, which sterically excludes the correctly activated isoleucine. The single editing site contains two valyl binding pockets, one specific for each substrate (Val-AMP or Val-tRNA(Ile))"}],"commentType":"DOMAIN"},{"texts":[{"evidences":[{"evidenceCode":"ECO:0000256","source":"ARBA","id":"ARBA00006887"},{"evidenceCode":"ECO:0000256","source":"HAMAP-Rule","id":"MF_02002"}],"value":"Belongs to the class-I aminoacyl-tRNA synthetase family. 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