ID SYI_PSYIN Reviewed; 944 AA.
AC A1SZP3;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 06-FEB-2007, sequence version 1.
DT 27-MAR-2024, entry version 104.
DE RecName: Full=Isoleucine--tRNA ligase {ECO:0000255|HAMAP-Rule:MF_02002};
DE EC=6.1.1.5 {ECO:0000255|HAMAP-Rule:MF_02002};
DE AltName: Full=Isoleucyl-tRNA synthetase {ECO:0000255|HAMAP-Rule:MF_02002};
DE Short=IleRS {ECO:0000255|HAMAP-Rule:MF_02002};
GN Name=ileS {ECO:0000255|HAMAP-Rule:MF_02002}; OrderedLocusNames=Ping_3271;
OS Psychromonas ingrahamii (strain DSM 17664 / CCUG 51855 / 37).
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Alteromonadales;
OC Psychromonadaceae; Psychromonas.
OX NCBI_TaxID=357804;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 17664 / CCUG 51855 / 37;
RX PubMed=18460197; DOI=10.1186/1471-2164-9-210;
RA Riley M., Staley J.T., Danchin A., Wang T.Z., Brettin T.S., Hauser L.J.,
RA Land M.L., Thompson L.S.;
RT "Genomics of an extreme psychrophile, Psychromonas ingrahamii.";
RL BMC Genomics 9:210-210(2008).
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:0000255|HAMAP-Rule:MF_02002}.
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; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_02002};
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_02002};
CC Note=Binds 1 zinc ion per subunit. {ECO:0000255|HAMAP-Rule:MF_02002};
CC -!- SUBUNIT: Monomer. {ECO:0000255|HAMAP-Rule:MF_02002}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_02002}.
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:0000255|HAMAP-Rule:MF_02002}.
CC -!- SIMILARITY: Belongs to the class-I aminoacyl-tRNA synthetase family.
CC IleS type 1 subfamily. {ECO:0000255|HAMAP-Rule:MF_02002}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; CP000510; ABM04958.1; -; Genomic_DNA.
DR RefSeq; WP_011771510.1; NC_008709.1.
DR AlphaFoldDB; A1SZP3; -.
DR SMR; A1SZP3; -.
DR STRING; 357804.Ping_3271; -.
DR KEGG; pin:Ping_3271; -.
DR eggNOG; COG0060; Bacteria.
DR HOGENOM; CLU_001493_7_1_6; -.
DR OrthoDB; 9810365at2; -.
DR Proteomes; UP000000639; 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; cd07960; Anticodon_Ia_Ile_BEm; 1.
DR CDD; cd00818; IleRS_core; 1.
DR Gene3D; 1.10.730.20; -; 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_02002; Ile_tRNA_synth_type1; 1.
DR InterPro; IPR001412; aa-tRNA-synth_I_CS.
DR InterPro; IPR002300; aa-tRNA-synth_Ia.
DR InterPro; IPR033708; Anticodon_Ile_BEm.
DR InterPro; IPR002301; Ile-tRNA-ligase.
DR InterPro; IPR023585; Ile-tRNA-ligase_type1.
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 InterPro; IPR010663; Znf_FPG/IleRS.
DR NCBIfam; TIGR00392; ileS; 1.
DR PANTHER; PTHR42765:SF1; ISOLEUCINE--TRNA LIGASE, MITOCHONDRIAL; 1.
DR PANTHER; PTHR42765; SOLEUCYL-TRNA SYNTHETASE; 1.
DR Pfam; PF08264; Anticodon_1; 1.
DR Pfam; PF00133; tRNA-synt_1; 1.
DR Pfam; PF06827; zf-FPG_IleRS; 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; ATP-binding; Cytoplasm; Ligase; Metal-binding;
KW Nucleotide-binding; Protein biosynthesis; Reference proteome; Zinc.
FT CHAIN 1..944
FT /note="Isoleucine--tRNA ligase"
FT /id="PRO_1000022110"
FT MOTIF 58..68
FT /note="'HIGH' region"
FT MOTIF 609..613
FT /note="'KMSKS' region"
FT BINDING 568
FT /ligand="L-isoleucyl-5'-AMP"
FT /ligand_id="ChEBI:CHEBI:178002"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 612
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 907
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 910
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 927
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 930
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
SQ SEQUENCE 944 AA; 106001 MW; 0A3CAA34C1F67913 CRC64;
MSDYKSTLNL PKTGFPMRAN LANREPNMLK NWYSNDLYGK IRAAKKGKKT FILHDGPPYA
NGDIHIGHSV NKILKDIIIK SKTLSDFDAP YIPGWDCHGL PIELKVEQKV GKPGKKISAA
EFRKKCREYA ARQVDGQRKD FKRLGVLGEW DKPYLTMDFG TEANIVRALA QVIKNDHLHK
GSKPVHWCTE CGSALAEAEV EYEDKLSPAI DVAFSAVDNE QVLNCFSAVT DNLGEGNVSA
VIWTTTPWTL PANRAIALAQ KVEYSLVQAG ERRLIIATDL VADCLKRYGN EDFSTLAICK
GIDLEKQLFN HPFLDLQVPA ILADYVTVDA GTGCVHTAPG HGQDDYAVGL RYDLEVANYV
ADNGVFRDDT EFFAGLHVFK ANDRVLEVLA ERNALLCSIK LNHSYPHCWR HKTPIIFRAT
PQWFIAMDQK SLRADALAEI QAVKWIPSWG QQRIEKMVEN RPDWCISRQR TWGVPITLFV
HKETDELHPN SVEMMELIAR KIEIDGIQAW WDLEPETLLG FEAEEYRKVT DTLDVWFDSG
TTHASVVAKR EEYTLESGEQ AAADMYLEGS DQHRGWFQSS LMTSMAINNK APYKEVLTHG
FVVDGNGKKM SKSLGNVMSP QTVMNNLGAD ILRLWVASTD YTGEMTVSDE ILNRSADSYR
RIRNTSRFLL ANLNGFDPTT DLVPNEEMVA LDRWIVAQTL ILQNDVIEAY ESYSLHAVYQ
KLTHFCSIEL GSFYLDIIKD RQYTAKADSN AHRSCQTALF HIAEALVRLM APILSFTADE
IWARLPGARD EFVFTTVWYD GLFSLSDNEA LSSAAWSKLT LVRAEVNKAL EIARKENAIG
GGLEAEVILY ASDEIATLLT TLEDELRFVL ITSQAQVKPL ADAPQLALKT EVTGLLVSVV
KSAAPKCERC WHHREEVGQN KQHPELCGRC VTNIEGQGEI RKFA
//
