Reviewed, UniProtKB/Swiss-Prot P0C124 (SYI_BRUA2)

Names and origin

Protein names

Recommended name:
    Isoleucyl-tRNA synthetase
    EC=6.1.1.5
Alternative name(s):
    Isoleucine--tRNA ligase
      Short name=IleRS

Gene names

Name:	ileS
Ordered Locus Names:	BAB2_0194

Organism

Brucella abortus (strain 2308) [Complete proteome] [HAMAP]

Taxonomic identifier

359391 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Alphaproteobacteria › Rhizobiales › Brucellaceae › Brucella

Protein attributes

Sequence length	972 AA.
Sequence status	Complete.
Protein existence	Inferred from homology.

General annotation (Comments)

Function	Catalyzes the attachment of isoleucine to tRNA(Ile). As IleRS can inadvertently accommodate and process structurally similar amino acids such as valine, to avoid such errors it has two additional distinct tRNA(Ile)-dependent editing activities. One activity is designated as 'pretransfer' editing and involves the hydrolysis of activated Val-AMP. The other activity is designated 'posttransfer' editing and involves deacylation of mischarged Val-tRNA(Ile) By similarity. HAMAP MF_02002
Catalytic activity	ATP + L-isoleucine + tRNA(Ile) = AMP + diphosphate + L-isoleucyl-tRNA(Ile). HAMAP MF_02002
Subunit structure	Monomer By similarity. HAMAP MF_02002
Subcellular location	Cytoplasm By similarity HAMAP MF_02002.
Domain	IleRS has two distinct active sites: one for aminoacylation and one for editing. The misactivated valine is translocated from the active site to the editing site, which sterically excludes the correctly activated isoleucine. The single editing site contains two valyl binding pockets, one specific for each substrate (Val-AMP or Val-tRNA(Ile)) By similarity. HAMAP MF_02002
Sequence similarities	Belongs to the class-I aminoacyl-tRNA synthetase family. IleS type 1 subfamily.

Ontologies

Keywords
Biological process	Protein biosynthesis
Cellular component	Cytoplasm
Ligand	ATP-binding Nucleotide-binding
Molecular function	Aminoacyl-tRNA synthetase Ligase
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	isoleucyl-tRNA aminoacylation Inferred from electronic annotation. Source: HAMAP
Cellular component	cytoplasm Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular function	ATP binding Inferred from electronic annotation. Source: HAMAP isoleucine-tRNA ligase activity Inferred from electronic annotation. Source: HAMAP zinc ion binding Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 972	972	Isoleucyl-tRNA synthetase HAMAP MF_02002		PRO_0000098362
Regions
	Motif	63 – 73	11	"HIGH" region HAMAP MF_02002
	Motif	644 – 648	5	"KMSKS" region HAMAP MF_02002
Sites
	Binding site	603	1	Aminoacyl-adenylate By similarity
	Binding site	647	1	ATP By similarity

Sequences

	Sequence		Length	Mass (Da)
	P0C124-1 [UniParc]. Last modified February 7, 2006. Version 1. Checksum: 439543DEDCC20013	FASTA	972	110,042
	10 20 30 40 50 60 MTDTTKIDYS KTLYLPQTEF PMRAGLPQRE PLFVQRWEEM NLYKKLREQA KDRPLYVLHD 70 80 90 100 110 120 GPPYANGNIH IGHALNKILK DVITRSFQMR GYNSNYVPGW DCHGLPIEWK IEEKYRAAGK 130 140 150 160 170 180 NKDEVPINEF RKECREFASN WIKVQTEEFK RLAILGDFEN PYTTMNFHAE ARIAGELLKF 190 200 210 220 230 240 AASGQLYRGS KPVMWSVVER TALAEAEVEY HDIESDMIWV KFPVAGEVAT ENDLSGSAVV 250 260 270 280 290 300 IWTTTPWTIP GNRAVSYSSR IEYGLFEITE AENDFGPRPG ERLVFADKLV EECCAKAKLQ 310 320 330 340 350 360 FKRLRSVSAE ELGKIVLDHP LKGFGGGYEF VVPMLDGDHV TDDAGTGFVH TAPSHGREDF 370 380 390 400 410 420 EAWMDNARQL EARGIDPNIP FPVGDDGFYT KDAPGFGPDR EGGPARVIDD NGKKGDANKV 430 440 450 460 470 480 VIEQLIAADK LFARGRLKHS YPHSWRSKKP VIFRNTPQWF VYMDKNLGDG TTLRSRALKA 490 500 510 520 530 540 IDETRFVPAA GQTRLRSMIE GRPDWVLSRQ RAWGVPICVF VDEEGNILQD DAVNKRIMDA 550 560 570 580 590 600 FEKEGADAWF ADGARERFLG ARAGEGWTQV RDILDVWFDS GSTHTFTLED RPDLKWPADV 610 620 630 640 650 660 YLEGSDQHRG WFHSSLLESC GTRGRAPYNA VVTHGFTMDE HGKKMSKSLG NTVTPQDVIK 670 680 690 700 710 720 ESGADILRLW VMTTDYWEDQ RLGKSIIQTN IDAYRKLRNT IRWMLGTLAH DEGENVAYAD 730 740 750 760 770 780 LPELERLMLH RLTELDELVR SGYDTFDFKR IARALVDFMN VELSAFYFDI RKDALYCDAP 790 800 810 820 830 840 SSIRRKAALQ TVREIFVRLT TWLAPMLPFT MEEAWLDRYP QSVSIHAEQF RPTPAEWRDD 850 860 870 880 890 900 VLAEKWRKVR AVRRVVTGAL ELERADKRIG SSLEAAPVVY IADKSLSDSL EGLDFAEICI 910 920 930 940 950 960 TSGISVSDAA APEGAFTLGD VKGVAVVPER AKGEKCARSW RYTTDVGADP EFPEVSARDA 970 AALRELQALG KL

References

[1]

"Whole-genome analyses of speciation events in pathogenic Brucellae." Chain P.S., Comerci D.J., Tolmasky M.E., Larimer F.W., Malfatti S.A., Vergez L.M., Aguero F., Land M.L., Ugalde R.A., Garcia E. Infect. Immun. 73:8353-8361(2005) [PubMed: 16299333] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBL GenBank DDBJ	AM040265 Genomic DNA. Translation: CAJ12360.1.
RefSeq	YP_418423.1.
3D structure databases
SMR	P0C124. Positions 7-966.
ModBase	Search...
Protein-protein interaction databases
STRING	P0C124.
Genome annotation databases
GeneID	3827171.
GenomeReviews	Gene locus BAB2_0194 in contig AM040265_GR.
KEGG	bmf:BAB2_0194.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	COG0060.
HOGENOM	HBG577712.
OMA	KQVLTHG.
Enzyme and pathway databases
BioCyc	BMEL359391:BAB2_0194-MONOMER.
Family and domain databases
HAMAP	MF_02002. Ile_tRNA_synth_type1. [Tree]
InterPro	IPR001412. aa-tRNA-synth_I_CS. IPR002300. aa-tRNA-synth_Ia. IPR002301. Ile-tRNA-synt_Ia. IPR015905. Ile-tRNA-synt_Ia_N. IPR018353. Isoleucyl-tRNA_synthetase. IPR014729. Rossmann-like_a/b/a_fold. IPR009080. tRNAsynth_1a_anticodon-bd. IPR013155. V/L/I-tRNA-synth_anticodon-bd. IPR009008. Val/Leu/Ile-tRNA-synth_Ia_edit. [Graphical view]
Gene3D	G3DSA:3.40.50.620. Rossmann-like_a/b/a_fold. 1 hit.
PANTHER	PTHR11946:SF9. Ile-tRNA-synt_Ia. 1 hit.
Pfam	PF08264. Anticodon_1. 1 hit. PF00133. tRNA-synt_1. 1 hit. [Graphical view]
PRINTS	PR00984. TRNASYNTHILE.
TIGRFAMs	TIGR00392. ileS. 1 hit.
PROSITE	PS00178. AA_TRNA_LIGASE_I. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

SYI_BRUA2

Accession

Primary (citable) accession number: P0C124
Secondary accession number(s): Q579P3

Entry history

Integrated into UniProtKB/Swiss-Prot:	February 7, 2006
Last sequence update:	February 7, 2006
Last modified:	February 9, 2010
This is version 28 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HAMAP (High-quality Automated and Manual Annotation of microbial Proteomes)