SYI_MALP2
ID SYI_MALP2 Reviewed; 900 AA.
AC Q8EUN9;
DT 20-DEC-2005, integrated into UniProtKB/Swiss-Prot.
DT 01-MAR-2003, sequence version 1.
DT 03-AUG-2022, entry version 115.
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=MYPE8820;
OS Malacoplasma penetrans (strain HF-2) (Mycoplasma penetrans).
OC Bacteria; Tenericutes; Mycoplasmoidales; Mycoplasmoidaceae; Malacoplasma.
OX NCBI_TaxID=272633;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=HF-2;
RX PubMed=12466555; DOI=10.1093/nar/gkf667;
RA Sasaki Y., Ishikawa J., Yamashita A., Oshima K., Kenri T., Furuya K.,
RA Yoshino C., Horino A., Shiba T., Sasaki T., Hattori M.;
RT "The complete genomic sequence of Mycoplasma penetrans, an intracellular
RT bacterial pathogen in humans.";
RL Nucleic Acids Res. 30:5293-5300(2002).
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; BA000026; BAC44673.1; -; Genomic_DNA.
DR RefSeq; WP_011077702.1; NC_004432.1.
DR AlphaFoldDB; Q8EUN9; -.
DR SMR; Q8EUN9; -.
DR STRING; 272633.26454344; -.
DR PRIDE; Q8EUN9; -.
DR EnsemblBacteria; BAC44673; BAC44673; BAC44673.
DR KEGG; mpe:MYPE8820; -.
DR eggNOG; COG0060; Bacteria.
DR HOGENOM; CLU_001493_7_0_14; -.
DR OMA; HLGTAWN; -.
DR OrthoDB; 32262at2; -.
DR Proteomes; UP000002522; 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 Gene3D; 3.40.50.620; -; 2.
DR Gene3D; 3.90.740.10; -; 1.
DR HAMAP; MF_02002; Ile_tRNA_synth_type1; 1.
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 Pfam; PF08264; Anticodon_1; 1.
DR Pfam; PF00133; tRNA-synt_1; 1.
DR PRINTS; PR00984; TRNASYNTHILE.
DR SUPFAM; SSF47323; SSF47323; 1.
DR SUPFAM; SSF50677; SSF50677; 1.
DR TIGRFAMs; TIGR00392; ileS; 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..900
FT /note="Isoleucine--tRNA ligase"
FT /id="PRO_0000098423"
FT MOTIF 58..68
FT /note="'HIGH' region"
FT MOTIF 591..595
FT /note="'KMSKS' region"
FT BINDING 550
FT /ligand="L-isoleucyl-5'-AMP"
FT /ligand_id="ChEBI:CHEBI:178002"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 594
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 871
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 874
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 888
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 891
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
SQ SEQUENCE 900 AA; 104162 MW; E7710FE7B619458C CRC64;
MSDYKKTLSM PNTNFEMKAN LSVKETKIQE NWVLEKIEKK ILAKNKSNTP FIIADGPPYA
NGDLHTGHAL NKILKDIILR FKASVGFYTK YIPGWDTHGL PIEQEMAKRG LNKNANQTIT
EKRKNCKNFA IENVYKQRDQ FRRLGILSEM DEIYVTCDLD YVIRQIKIFN KMLSKGLIYQ
DLKPVYWSWS SQTALADAEI IYQDVESDSI YVSLEILDKN EFVSKGDKVI IWTTTPWTLP
SNLAIAANPK VTYCRVQVEN SVYVISKNLV EKLAETLEWT NYEILSEFSG KKLENLPYKS
PISDKKCKII VDGYVSDSDG TGLVHNAPGF GHEDYLACKK YNIKPYCPID NLGKFTGEVN
DKELAGLFYK DANPIIIERL AKKKLLLKAS KFTHSAAHDW RTKKPVIYRA TKQWFVNIDK
ISKEIVAALN KVKSIDNTII KKIKEMVLNR QEWCISRQRI WGVPICIIYD KDYNPILDPK
LLNNIVDILN DEGINAWYNE DAKYFLTDSY NTSKKYIKET DIMDVWFDSG TSYSVLQADK
LGYPADLYFE GKDQFRGWFN SSLITSVAAF KKSPYKELLT HGFVLDENGN KMSKSLGNII
DPLQVCKEYG ADVLRLWVAS VDFSKDVSIS KDIIAQNAEL YRRIRNTLFR FILGNLNGFN
LKKLRGAKYS EADLYVLSCL SNDIKTIKAC YDKYDFKQIV KIVSKNVADL SSWYFDYIKD
PLYCEKEDNE QRIAIQATLY QLLDSYLRIL APIIPHTCEE AYEFFDKKDK QKSVHLEGFT
NFKIDSKYKV DFKKWEEFFD LKDKVYSEIE KTRNEKVINS KGQAHITIHS KSLPFDEQTL
ERYLGVAKVE FKVKEKDGTT IKVKNSKYAR CERCWNYYPT NLIANELCER CKKVIGNKKI
