ID H6LB93_ACEWD Unreviewed; 1032 AA.
AC H6LB93;
DT 18-APR-2012, integrated into UniProtKB/TrEMBL.
DT 18-APR-2012, sequence version 1.
DT 18-JUN-2025, entry version 69.
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:AFA47645.1};
GN OrderedLocusNames=Awo_c08540 {ECO:0000313|EMBL:AFA47645.1};
OS Acetobacterium woodii (strain ATCC 29683 / DSM 1030 / JCM 2381 / KCTC 1655
OS / WB1).
OC Bacteria; Bacillati; Bacillota; Clostridia; Eubacteriales; Eubacteriaceae;
OC Acetobacterium.
OX NCBI_TaxID=931626 {ECO:0000313|EMBL:AFA47645.1, ECO:0000313|Proteomes:UP000007177};
RN [1] {ECO:0000313|Proteomes:UP000007177}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 29683 / DSM 1030 / JCM 2381 / KCTC 1655 / WB1
RC {ECO:0000313|Proteomes:UP000007177};
RA Poehlein A., Schmidt S., Kaster A.-K., Goenrich M., Vollmers J.,
RA Thuermer A., Gottschalk G., Thauer R.K., Daniel R., Mueller V.;
RT "Complete genome sequence of Acetobacterium woodii.";
RL Submitted (JUL-2011) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:AFA47645.1, ECO:0000313|Proteomes:UP000007177}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 29683 / DSM 1030 / JCM 2381 / KCTC 1655 / WB1
RC {ECO:0000313|Proteomes:UP000007177};
RX PubMed=22479398; DOI=10.1371/journal.pone.0033439;
RA Poehlein A., Schmidt S., Kaster A.K., Goenrich M., Vollmers J., Thurmer A.,
RA Bertsch J., Schuchmann K., Voigt B., Hecker M., Daniel R., Thauer R.K.,
RA Gottschalk G., Muller V.;
RT "An ancient pathway combining carbon dioxide fixation with the generation
RT and utilization of a sodium ion gradient for ATP synthesis.";
RL PLoS ONE 7:E33439-E33439(2012).
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=tRNA(Ile) + L-isoleucine + ATP = L-isoleucyl-tRNA(Ile) + AMP +
CC diphosphate; Xref=Rhea:RHEA:11060, Rhea:RHEA-COMP:9666, Rhea:RHEA-
CC COMP:9695, ChEBI:CHEBI:30616, ChEBI:CHEBI:33019, ChEBI:CHEBI:58045,
CC ChEBI:CHEBI:78442, ChEBI:CHEBI:78528, ChEBI:CHEBI:456215; EC=6.1.1.5;
CC Evidence={ECO:0000256|ARBA:ARBA00048359, ECO:0000256|HAMAP-
CC Rule:MF_02003};
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000256|ARBA:ARBA00001947,
CC ECO:0000256|HAMAP-Rule:MF_02003};
CC -!- SUBUNIT: Monomer. {ECO:0000256|ARBA:ARBA00011245, ECO:0000256|HAMAP-
CC Rule:MF_02003}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|ARBA:ARBA00004496,
CC 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|ARBA:ARBA00007078,
CC ECO:0000256|HAMAP-Rule:MF_02003}.
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DR EMBL; CP002987; AFA47645.1; -; Genomic_DNA.
DR RefSeq; WP_014355248.1; NC_016894.1.
DR AlphaFoldDB; H6LB93; -.
DR STRING; 931626.Awo_c08540; -.
DR KEGG; awo:Awo_c08540; -.
DR eggNOG; COG0060; Bacteria.
DR HOGENOM; CLU_001493_1_1_9; -.
DR OrthoDB; 9810365at2; -.
DR Proteomes; UP000007177; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0002161; F:aminoacyl-tRNA deacylase 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 FunFam; 3.40.50.620:FF:000063; Isoleucine--tRNA ligase; 1.
DR FunFam; 3.40.50.620:FF:000075; Isoleucine--tRNA ligase; 1.
DR Gene3D; 3.40.50.620; HUPs; 2.
DR Gene3D; 1.10.730.10; Isoleucyl-tRNA Synthetase, Domain 1; 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};
KW Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_02003};
KW Ligase {ECO:0000256|ARBA:ARBA00022598, ECO:0000256|HAMAP-Rule:MF_02003};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW 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:UP000007177};
KW Zinc {ECO:0000256|ARBA:ARBA00022833, ECO:0000256|HAMAP-Rule:MF_02003}.
FT DOMAIN 20..621
FT /note="Aminoacyl-tRNA synthetase class Ia"
FT /evidence="ECO:0000259|Pfam:PF00133"
FT DOMAIN 677..824
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 590..594
FT /note="'KMSKS' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
FT BINDING 593
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
SQ SEQUENCE 1032 AA; 119056 MW; 6A0BBB4F4BAADE3D CRC64;
MAQFKTLSEG KIGEREDIIS KQWEAMNLLQ KTIDNREGKE NFVFYEGPPT ANGRPGIHHV
LARTLKDTVC KYKVMDGYRV LRKGGWDTHG LPVEIEVEKQ LGLSSKPEIE AYGIDKFNEK
CKESVFNYES QWKEMSRKMG YFIDMEDPYI TLDNNYIESV WWILDKFNKE GFLYEGHKIM
PYCPRCGTGL ASHEVAQGYQ EIKSNTVVVA FKRKDADEYF LVWTTTPWTL AANVALAVHP
EADYIKARSK DTVYICAKVL APKLLGDDYE ILAEMKGSAL EYVEYDQLMP FVKPDKKAFF
VTCADYVTTE DGTGIVHIAP AFGEDDYKVG RQYSLPVLQP VAEDGKYTDT PWKGQFVMDA
DLDIIKWLKA EGKLFKKEKM LHNYPHCWRC KTPLLYYAKP SWYLEMTKIK DRLIENNNGV
EWYPDFVGEK RFGNWLENLN DWAISRTRYW GTPLPVWRCD ECGKLETVGS RKELIDRAVE
DIDESIELHR PYVDDVHFVC PDCGKTMTRV KDVIDCWFDS GSMPFAQYHY PFENKERWEE
QFPADFICEG IDQTRGWFYS LLAISSFVTG KAPYKKVLVN DLILDAEGQK MSKTKGNTVN
PFELFEEYGA DALRWYLLYV SPAWTPTRFD VKGIKEVQSK FFNTLKNTYH FFALYANTDN
IDPREFFIPY AQRPEIDAWI LSKYNRLIKE VRAEMEVFDL TKAVKKIQNF VNEDLSNWYI
RRNRRRFWGT ELTDDKKAVY NTTWEVLEGV VRLCAPFAPY ITEELYQKLT DGVSVHLADY
PTANEELILD AIEAPMDLVR ELVSLGRGAR EEAQIKVRQP LSKIIVDGKY RETLGDLCVL
IEEELNIKAV VFEDNLGDFM NYTLKPDFKV AGPVLGKNVK LLGKALASVE ASEVVAKLEA
DNSFVIELDG ESLELRKDFI DIRISAKEGF NVQMFNNKFI ILDTSLDQDL LDEGCAREFV
SRIQQLRKSN GYEVMDRIDI SYSSDEAMDR AIAIYTDFIK TETLADEITI KTGAGEVFNL
NGHDTGIELT KK
//
