ID A0A0S7BBH3_9CHLR Unreviewed; 1048 AA.
AC A0A0S7BBH3;
DT 17-FEB-2016, integrated into UniProtKB/TrEMBL.
DT 17-FEB-2016, sequence version 1.
DT 24-JAN-2024, entry version 38.
DE RecName: Full=Isoleucine--tRNA ligase {ECO:0000256|HAMAP-Rule:MF_02003};
DE EC=6.1.1.5 {ECO:0000256|HAMAP-Rule:MF_02003};
DE AltName: Full=Isoleucyl-tRNA synthetase {ECO:0000256|HAMAP-Rule:MF_02003};
DE Short=IleRS {ECO:0000256|HAMAP-Rule:MF_02003};
GN Name=ileS {ECO:0000256|HAMAP-Rule:MF_02003};
GN ORFNames=LARV_02932 {ECO:0000313|EMBL:GAP15151.1};
OS Longilinea arvoryzae.
OC Bacteria; Chloroflexota; Anaerolineae; Anaerolineales; Anaerolineaceae;
OC Longilinea.
OX NCBI_TaxID=360412 {ECO:0000313|EMBL:GAP15151.1};
RN [1] {ECO:0000313|EMBL:GAP15151.1}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=KOME-1 {ECO:0000313|EMBL:GAP15151.1};
RA Sekiguchi Y., Ohashi A., Matsuura N., Tourlousse M.D.;
RT "Draft Genome Sequences of Anaerolinea thermolimosa IMO-1, Bellilinea
RT caldifistulae GOMI-1, Leptolinea tardivitalis YMTK-2, Levilinea
RT saccharolytica KIBI-1,Longilinea arvoryzae KOME-1, Previously Described as
RT Members of the Anaerolineaceae (Chloroflexi).";
RL Submitted (JUL-2015) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the attachment of isoleucine to tRNA(Ile). As IleRS
CC can inadvertently accommodate and process structurally similar amino
CC acids such as valine, to avoid such errors it has two additional
CC distinct tRNA(Ile)-dependent editing activities. One activity is
CC designated as 'pretransfer' editing and involves the hydrolysis of
CC activated Val-AMP. The other activity is designated 'posttransfer'
CC editing and involves deacylation of mischarged Val-tRNA(Ile).
CC {ECO:0000256|ARBA:ARBA00025217, ECO:0000256|HAMAP-Rule:MF_02003}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + L-isoleucine + tRNA(Ile) = AMP + diphosphate + L-
CC isoleucyl-tRNA(Ile); Xref=Rhea:RHEA:11060, Rhea:RHEA-COMP:9666,
CC Rhea:RHEA-COMP:9695, ChEBI:CHEBI:30616, ChEBI:CHEBI:33019,
CC ChEBI:CHEBI:58045, ChEBI:CHEBI:78442, ChEBI:CHEBI:78528,
CC ChEBI:CHEBI:456215; EC=6.1.1.5;
CC Evidence={ECO:0000256|ARBA:ARBA00000114, ECO:0000256|HAMAP-
CC Rule:MF_02003};
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_02003};
CC -!- SUBUNIT: Monomer. {ECO:0000256|HAMAP-Rule:MF_02003}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_02003}.
CC -!- DOMAIN: IleRS has two distinct active sites: one for aminoacylation and
CC one for editing. The misactivated valine is translocated from the
CC active site to the editing site, which sterically excludes the
CC correctly activated isoleucine. The single editing site contains two
CC valyl binding pockets, one specific for each substrate (Val-AMP or Val-
CC tRNA(Ile)). {ECO:0000256|HAMAP-Rule:MF_02003}.
CC -!- SIMILARITY: Belongs to the class-I aminoacyl-tRNA synthetase family.
CC IleS type 2 subfamily. {ECO:0000256|HAMAP-Rule:MF_02003}.
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DR EMBL; DF967972; GAP15151.1; -; Genomic_DNA.
DR RefSeq; WP_075074346.1; NZ_DF967972.1.
DR AlphaFoldDB; A0A0S7BBH3; -.
DR STRING; 360412.LARV_02932; -.
DR OrthoDB; 9810365at2; -.
DR Proteomes; UP000055060; Unassembled WGS sequence.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0002161; F:aminoacyl-tRNA editing activity; IEA:InterPro.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0004822; F:isoleucine-tRNA ligase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0000049; F:tRNA binding; IEA:InterPro.
DR GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0006428; P:isoleucyl-tRNA aminoacylation; IEA:UniProtKB-UniRule.
DR CDD; cd07961; Anticodon_Ia_Ile_ABEc; 1.
DR CDD; cd00818; IleRS_core; 1.
DR Gene3D; 3.40.50.620; HUPs; 2.
DR Gene3D; 3.90.740.10; Valyl/Leucyl/Isoleucyl-tRNA synthetase, editing domain; 1.
DR HAMAP; MF_02003; Ile_tRNA_synth_type2; 1.
DR InterPro; IPR002300; aa-tRNA-synth_Ia.
DR InterPro; IPR033709; Anticodon_Ile_ABEc.
DR InterPro; IPR002301; Ile-tRNA-ligase.
DR InterPro; IPR023586; Ile-tRNA-ligase_type2.
DR InterPro; IPR013155; M/V/L/I-tRNA-synth_anticd-bd.
DR InterPro; IPR014729; Rossmann-like_a/b/a_fold.
DR InterPro; IPR009080; tRNAsynth_Ia_anticodon-bd.
DR InterPro; IPR009008; Val/Leu/Ile-tRNA-synth_edit.
DR NCBIfam; TIGR00392; ileS; 1.
DR PANTHER; PTHR42780:SF1; ISOLEUCINE--TRNA LIGASE, CYTOPLASMIC; 1.
DR PANTHER; PTHR42780; SOLEUCYL-TRNA SYNTHETASE; 1.
DR Pfam; PF08264; Anticodon_1; 1.
DR Pfam; PF19302; DUF5915; 1.
DR Pfam; PF00133; tRNA-synt_1; 1.
DR PRINTS; PR00984; TRNASYNTHILE.
DR SUPFAM; SSF47323; Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases; 1.
DR SUPFAM; SSF52374; Nucleotidylyl transferase; 1.
DR SUPFAM; SSF50677; ValRS/IleRS/LeuRS editing domain; 1.
PE 3: Inferred from homology;
KW Aminoacyl-tRNA synthetase {ECO:0000256|ARBA:ARBA00023146,
KW ECO:0000256|HAMAP-Rule:MF_02003};
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW Rule:MF_02003}; Cytoplasm {ECO:0000256|HAMAP-Rule:MF_02003};
KW Ligase {ECO:0000256|ARBA:ARBA00022598, ECO:0000256|HAMAP-Rule:MF_02003};
KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_02003};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_02003};
KW Protein biosynthesis {ECO:0000256|ARBA:ARBA00022917, ECO:0000256|HAMAP-
KW Rule:MF_02003}; Reference proteome {ECO:0000313|Proteomes:UP000055060};
KW Zinc {ECO:0000256|HAMAP-Rule:MF_02003}.
FT DOMAIN 18..634
FT /note="Aminoacyl-tRNA synthetase class Ia"
FT /evidence="ECO:0000259|Pfam:PF00133"
FT DOMAIN 681..831
FT /note="Methionyl/Valyl/Leucyl/Isoleucyl-tRNA synthetase
FT anticodon-binding"
FT /evidence="ECO:0000259|Pfam:PF08264"
FT MOTIF 48..58
FT /note="'HIGH' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
FT MOTIF 596..600
FT /note="'KMSKS' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
FT BINDING 599
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
SQ SEQUENCE 1048 AA; 119572 MW; 8909B45043E1434A CRC64;
MFRPVSPKLN VTIMEEGVLR NWKSHDVFHR SLKQREGRRE YVFFEGPPTA NGRPGIHHVL
ARAFKDIFPR YKTMCGYHVS RRGGWDTHGL PVEIEVEKKL GFKNKQQIED YGIGKFNALC
RESAFTYIQE WEKLTDRIGY WVDLDTAYVT YKNEYIESVW NILKNYWDRN LLYQNFKVVP
YCPRCGTPLS DHEVAQGYDE ATDPSVYIRL PLVDQPDTSL LVWTTTPWTL PSNVAVAAHP
DVEYVKIERA LPDGGKEYLI LAAPLVGKIF TDEPVRVVER YSGKQLKGKR YRPLFTFLPT
DKPAYRVVNA NYVTTDDGTG LVHIAPAFGA EDMNVSMEED LPILMTVAPD GTFISEVRPW
AGKFVKDADP FIMQDLEARG LLFRSGTITH TYPFCWRCGT PLLYYARRTW YIRTSQFKDQ
LVELNQQINW YPAHIKNGRF GNWLENNIDW ALGRERYWGT PLPVWECDRC HTQVCVGSVQ
ELSEKAGRDM SESDLHRPYV DEVVWQHDCG GTMHRVPELI DVWFDSGSMP YAQWHYPFEN
QEKFKEQYPA DFICEAVDQT RGWFYSLHAI STLLNNQVAY KNVICLGLIL DGNGQKMSKS
RGNVVNPWDV LNQNGADATR WYLYTASPAG QERRFSADLV ADVVRTFTLT LWNTYSFFVT
YANLDGWKPE PGVQPAYSPL DRWLRSSLHE LVRNVTQALE NYDVLGATRP IQSFVEDLSN
WYLRRSRRRF WKSESDQDKQ AAYATLYEAL VTLSKLLAPT MPFMADELYQ NLVRSVNSEA
PDSVHLCDWP EFDPAVIDEN LNRDMAVVMK LVSVGHAARN KANRKVRQPL SEAAFSVGSI
EERKAMQNYA ELIEDELNVK HVRALDAASE AVAYSLNPLP KQLGQKYGSR FPAIRKALLA
MDAEAPARAL LAGQPVKVEI EGETLEVLPE EVEVRAQAKA GFSVASEGAY LAALVTDLTP
ELVKEGLARE FVRRVQDLRK TADLDIADRI RVYYQATPAL AEAVQTFKEY ITNETLTVEL
ADTAVPEDWP QVADGFDGET VTVGLVKA
//
