ID R9IPI1_9FIRM Unreviewed; 1052 AA.
AC R9IPI1;
DT 24-JUL-2013, integrated into UniProtKB/TrEMBL.
DT 24-JUL-2013, sequence version 1.
DT 24-JAN-2024, entry version 54.
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=C804_05357 {ECO:0000313|EMBL:EOS23736.1};
OS Lachnospiraceae bacterium A4.
OC Bacteria; Bacillota; Clostridia; Eubacteriales; Lachnospiraceae.
OX NCBI_TaxID=397291 {ECO:0000313|EMBL:EOS23736.1, ECO:0000313|Proteomes:UP000014118};
RN [1] {ECO:0000313|EMBL:EOS23736.1, ECO:0000313|Proteomes:UP000014118}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=A4 {ECO:0000313|EMBL:EOS23736.1,
RC ECO:0000313|Proteomes:UP000014118};
RG The Broad Institute Genomics Platform;
RG The Broad Institute Genome Sequencing Center for Infectious Disease;
RA Earl A., Xavier R., Elson C., Duck W., Walker B., Young S., Zeng Q.,
RA Gargeya S., Fitzgerald M., Haas B., Abouelleil A., Allen A.W., Alvarado L.,
RA Arachchi H.M., Berlin A.M., Chapman S.B., Gainer-Dewar J., Goldberg J.,
RA Griggs A., Gujja S., Hansen M., Howarth C., Imamovic A., Ireland A.,
RA Larimer J., McCowan C., Murphy C., Pearson M., Poon T.W., Priest M.,
RA Roberts A., Saif S., Shea T., Sisk P., Sykes S., Wortman J., Nusbaum C.,
RA Birren B.;
RT "The Genome Sequence of Lachnospiraceae bacterium A4.";
RL Submitted (APR-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|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|ARBA:ARBA00007078,
CC ECO:0000256|HAMAP-Rule:MF_02003}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:EOS23736.1}.
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DR EMBL; ASSR01000131; EOS23736.1; -; Genomic_DNA.
DR AlphaFoldDB; R9IPI1; -.
DR STRING; 397291.C804_05357; -.
DR PATRIC; fig|397291.3.peg.5545; -.
DR eggNOG; COG0060; Bacteria.
DR HOGENOM; CLU_001493_1_1_9; -.
DR OrthoDB; 9810365at2; -.
DR Proteomes; UP000014118; 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; 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};
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|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:UP000014118};
KW Zinc {ECO:0000256|HAMAP-Rule:MF_02003}.
FT DOMAIN 19..633
FT /note="Aminoacyl-tRNA synthetase class Ia"
FT /evidence="ECO:0000259|Pfam:PF00133"
FT DOMAIN 690..840
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 603..607
FT /note="'KMSKS' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
FT BINDING 606
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
SQ SEQUENCE 1052 AA; 120399 MW; C2FB0A41267B790A CRC64;
MYNKVDTNLN FVDREKNVEK FWKDNDIFRK SMDSRKEGET YTFYDGPPTA NGKPHIGHVL
TRVIKDMIPR YRTMKGYMVP RKAGWDTHGL PVELEVEKLL GLNGKDQIEE YGMEPFIKKC
KESVWKYKGM WEDFSGTVGF WADMDDPYVT YDDNFIESEW WALKEIWDKK LLYKGFKIVP
YCPRCGTPLS SQEVAQGYKT VKERSAVVRF QVVGEDAYFL AWTTTPWTLP SNVALCVNPD
ETYCKVKAAD GCTYYMAEAL LDKVLGKLAE NEGDKAYEVL ENYKGTDLEY KAYVPLFDFA
AGIIEKQHKK AHFITCDTYV TMTDGTGIVH IAPAFGEDDA NVGRKYELPF VQLVNGKGEM
TEETSYAGVF VKKADPMILK DLEEKGLLFD APKFEHEYPH CWRCDTPLIY YARESWFIKM
TAVKEDLVRN NNTVNWIPES IGKGRFGDWL ENIQDWGISR NRYWGTPLNV WECECGHQEC
IGSRQELADR SGNPDAVKVE LHRPYIDEVT FKCPDCGKEM RRVPEVIDCW FDSGAMPFAQ
HHYPFENKEL FEQQFPAQFI SEAVDQTRGW FYSLMAESTL LFNKAPYENV IVLGHVQDEN
GQKMSKSKGN AVDPFEALET YGADAIRWYF YVNSAPWLPN RFHGKAVQEG QRKFMGTLWN
TYAFFVLYAN IDGFDATKYT LEYDKLPVMD KWLLSKLNTV VGAVDNDLEN YRIPEAARAL
QEFVDEMSNW YVRRSRERFW AKGMEQDKIN AYMTLYTALV TISKAAAPMI PFMTEDIYRN
LVCSVDSSAP ESIHLCDFPS VDEKFIDKQL ETDMEAVLKT VVMGRACRNT ANIKNRQPIS
TMFIKAPFTL GAFYQEIIED ELNVKKVVFT DDVREFTTYT FKPQLKTVGP KYGKQLGGIK
EKLSTIDGNA AMDALKADGV IAFDVNGTEV KLAEEDLLID ISQKEGYVTE ADNTVTVVLD
TNLTEELVEE GFVYEVISKV QTMRKDSGFE VMDHIKVYIS GNDTIVSVVQ KNEKAIGEKV
LADAFVYGED NVPNTKNWNI NGENATVGVA RC
//
