ID R9SLG1_9EURY Unreviewed; 1107 AA.
AC R9SLG1;
DT 18-SEP-2013, integrated into UniProtKB/TrEMBL.
DT 18-SEP-2013, sequence version 1.
DT 24-JAN-2024, entry version 48.
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 ECO:0000313|EMBL:AGN17542.1};
GN ORFNames=Abm4_1686 {ECO:0000313|EMBL:AGN17542.1};
OS Methanobrevibacter sp. AbM4.
OC Archaea; Euryarchaeota; Methanomada group; Methanobacteria;
OC Methanobacteriales; Methanobacteriaceae; Methanobrevibacter.
OX NCBI_TaxID=224719 {ECO:0000313|EMBL:AGN17542.1, ECO:0000313|Proteomes:UP000014066};
RN [1] {ECO:0000313|EMBL:AGN17542.1, ECO:0000313|Proteomes:UP000014066}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=AbM4 {ECO:0000313|EMBL:AGN17542.1};
RA Leahy S.C., Kelly W.J., Li D., Lambie S.C., Altermann E., Li Y.,
RA Attwood G.T.;
RL Submitted (JAN-2013) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:AGN17542.1, ECO:0000313|Proteomes:UP000014066}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Abm4 {ECO:0000313|Proteomes:UP000014066};
RG Pastoral Greenhouse Gas Research Consortium;
RA Leahy S.C., Kelly W.J., Li D., Lambie S.C., Altermann E., Li Y.,
RA Attwood G.T.;
RT "The comlpete genome sequence of Methanobrevibacter sp. AbM4.";
RL Submitted (JUN-2013) 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; CP004050; AGN17542.1; -; Genomic_DNA.
DR RefSeq; WP_016359239.1; NC_021355.1.
DR AlphaFoldDB; R9SLG1; -.
DR STRING; 224719.Abm4_1686; -.
DR GeneID; 15799174; -.
DR KEGG; meb:Abm4_1686; -.
DR eggNOG; arCOG00807; Archaea.
DR HOGENOM; CLU_001493_1_1_2; -.
DR OrthoDB; 30823at2157; -.
DR Proteomes; UP000014066; Chromosome.
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; 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; 1.
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:UP000014066};
KW Zinc {ECO:0000256|HAMAP-Rule:MF_02003}.
FT DOMAIN 19..674
FT /note="Aminoacyl-tRNA synthetase class Ia"
FT /evidence="ECO:0000259|Pfam:PF00133"
FT DOMAIN 724..872
FT /note="Methionyl/Valyl/Leucyl/Isoleucyl-tRNA synthetase
FT anticodon-binding"
FT /evidence="ECO:0000259|Pfam:PF08264"
FT MOTIF 49..59
FT /note="'HIGH' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
FT MOTIF 638..642
FT /note="'KMSKS' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
FT BINDING 641
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
SQ SEQUENCE 1107 AA; 127677 MW; 5522D997F88BB579 CRC64;
MPIEEAEKSY QFKKIDKSVH DFWQDEEIFA KINKIRKNGP QYSFLDGPPY CSGKIHLGTA
WNKIIKDTLL RYKSMEGYSL RRQAGWDMHG LPIENKVEQI MGIKSKQEIE SDIGISNFVD
KCQEFAFKNK LAMTKQFQSL GVWMDWDDPY MTLDPNYMQS AWWTLKRAEE QNLLTHDKRV
ISWCPHCETA LAAAELDYEE REDPSIYLQF PLENPCLSKD ENPDGLEEYI LVWTTTPWTL
PANMAICVNP DFDYDFVLKD DKIYILADGL LENVLGKEKT VHKHKIPAEN EDEEDKIEEH
VTINYTIIKT VKGSELLGIR YVYPFLDEIP KQKEFDSLEN VHTIIPGDHV DLEEGTGCVH
TAPGHGPDDF NMGKEFNLPI FCPVNESGNF SEDAGVFEGH YTKDYDPEII KILVNKGFMY
NHGTIEHRYG ICWRCKTPIL YRATEQWFLK VTDVKDKMLS EVDNVDWVPE WAGSSRFHDW
VANAQDWTIS RQRYWGIPIP VWICPDCGER KVIGSVSELK ESSVNEIPSD VELSKLVHRP
YVDTVKVKCP HCNGEMERIP DVLDVWIDSG VAGWASLYYP QEKDKFEKWY PYDFVCEGHD
QTRGWFYSQL GTGVISMNRV PYNRVLMHGF VLDENGKKMS KSLGNVVSPE EVIEKYGADV
LRFYLLWACK PWDDLKFVWD ELNNVNKMFN ILWNVYVFST TYMSLDNFNP SKCNDDTMIL
RDEDRWIISR VNTLAKEVGK DIDDLYFHKA TRKIMDFILE DLSRWYVRLI RGRTWVESDD
PDKLGAYYGL YTALVSLIKL MAPIAPHLSE VIYQNLVVGN LDDAKESVHM EDWTVNEDLI
DEDLEHEMSI ARDVIDASIR ARDVARYKLR WPVTDITVVS SDDKVSSAVS NLEDVIKDQA
NTKAVLTSSE FEDLSYIAKP NLKILGPKLK GDIGIVKKYL EEADGNKIKD DLEANGEITV
NGVDRQGMEK AIVLSSEEVI FDSELPDDFV SSEFKGGNVF VNTKVTPEIL SEAMSRELIR
RVQDMRKDMD LDVEANINVK VNCSDSFKDL VVKQEDLISN EVRANTLVFN VGECNNIKSD
EQQDISNEYT KEWKIEDEDI IINIVKN
//
