ID A0A1H6IGC0_9EURY Unreviewed; 1051 AA.
AC A0A1H6IGC0;
DT 22-NOV-2017, integrated into UniProtKB/TrEMBL.
DT 22-NOV-2017, sequence version 1.
DT 27-MAR-2024, entry version 24.
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=SAMN05192561_102292 {ECO:0000313|EMBL:SEH47529.1};
OS Halopenitus malekzadehii.
OC Archaea; Euryarchaeota; Stenosarchaea group; Halobacteria; Haloferacales;
OC Halorubraceae; Halopenitus.
OX NCBI_TaxID=1267564 {ECO:0000313|EMBL:SEH47529.1, ECO:0000313|Proteomes:UP000199215};
RN [1] {ECO:0000313|EMBL:SEH47529.1, ECO:0000313|Proteomes:UP000199215}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=IBRC-M10418 {ECO:0000313|EMBL:SEH47529.1,
RC ECO:0000313|Proteomes:UP000199215};
RA de Groot N.N.;
RL Submitted (OCT-2016) 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|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; FNWU01000002; SEH47529.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A1H6IGC0; -.
DR STRING; 1267564.SAMN05192561_102292; -.
DR OrthoDB; 30823at2157; -.
DR Proteomes; UP000199215; 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 HAMAP; MF_02003; Ile_tRNA_synth_type2; 1.
DR InterPro; IPR001412; aa-tRNA-synth_I_CS.
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; 2.
DR SUPFAM; SSF52374; Nucleotidylyl transferase; 1.
DR SUPFAM; SSF50677; ValRS/IleRS/LeuRS editing domain; 1.
DR PROSITE; PS00178; AA_TRNA_LIGASE_I; 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:UP000199215};
KW Zinc {ECO:0000256|HAMAP-Rule:MF_02003}.
FT DOMAIN 19..641
FT /note="Aminoacyl-tRNA synthetase class Ia"
FT /evidence="ECO:0000259|Pfam:PF00133"
FT DOMAIN 695..842
FT /note="Methionyl/Valyl/Leucyl/Isoleucyl-tRNA synthetase
FT anticodon-binding"
FT /evidence="ECO:0000259|Pfam:PF08264"
FT MOTIF 47..57
FT /note="'HIGH' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
FT MOTIF 609..613
FT /note="'KMSKS' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
FT BINDING 612
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
SQ SEQUENCE 1051 AA; 118212 MW; 52950D9BD2BA9205 CRC64;
MEQIDDQYTP ADVESTVESY WDDADAYEAA TEAHADDPPF FFVDGPPYTS GQMHLGTAWN
KTLKDAIIRY KRMTGHRVTD RPGYDMHGLP IEVKVEEKLG FDSKTEIEEY GMEAFIEECM
EFAESNREAM DEDFKSIGAW MDWDDPYKTI DPEYMESAWW AFSEVADRGL VERGKRSISQ
CPRCETGLAN NEVEYEDVED PSIYVKFPLS GREGSLVIWT TTPWTIPANT FVAVDEELTY
NAVRATTDGD GGEAASEDLL YVAADCVEDV LTQGRYDDYE IEAELSGAEL VGWAYDHPLA
DHLAEYPDFE GAGQVYAADY VEADRTGLVH SAPGHGEVDF ERGRELGLEI ACPVEPNGEF
TGAAGEYAGQ FVRDANDDII ADLIEDGRML AHGTVEHSYG HCWRCDTGII QLVTDQWFIS
ITDVKDDLLE NMTDSEWFPS WARDQRFRDF IEDAPDWNVS RQRYWGIPIP IWVPEDADPE
SFDEEMIVVG TREELAERVD QSIDPTEVDL HRPTVDDLTI TEDETTYRRV EDVFDVWLDS
SVASWATIGY PGETEAFEEL WPADLIVEAH DQTRGWFWSQ LGMATAAFGE TPYEQVLMHG
FVNDSEGRKM SKSVGNIVTP EEAIERAGRD PLRTYLLSHD QQGIDLSFEW DGLGEIQGKL
NILWNTFRFP LPYMDLDDYD PAEASLEDGE LELVDEWILS RLQSVEQEVA EAWDQYRVSD
AVNALIEFVT QDVSRFYIKA VRDRMWEEAD SASKRGAYAT IATVLDETIR MLAPIAPYLT
ERMYRTLDGE ATTVHALPFP TADDELHDPD LEHDVAVMRE VEEAAATARQ QAGRKLRWPV
SRVIVETEDD DVADAVAALE DLILDRVNAR SLVVTERFAE LEELAQPEMA EIGPAFGGQA
QEVMTAVEGA SRSAVENGDV TVDGEPIDLE PEMVEYEATP PAGVSAAPFA DGTVYVDTTL
TDDIEAEGYA RDVIRRVQEM RKDLDLDVDA SIRLGVTIDD DRVADLVDEH RDLIAEETRA
TEWLDDPDAA TDAHEEWDVE GIAVTIGIDR V
//
