Isoleucine--tRNA ligase - Lactobacillus brevis (strain ATCC 367 / JCM 1170)

Preferred order of sections

Names and origin

Protein names

Recommended name:
Isoleucine--tRNA ligase
EC=6.1.1.5

Alternative name(s):
Isoleucyl-tRNA synthetase
Short name=IleRS

Gene names

Name:	ileS
Ordered Locus Names:	LVIS_1441

Organism

Lactobacillus brevis (strain ATCC 367 / JCM 1170) [Complete proteome] [HAMAP]

Taxonomic identifier

387344 [NCBI]

Taxonomic lineage

Bacteria › Firmicutes › Bacilli › Lactobacillales › Lactobacillaceae › Lactobacillus ›

Protein attributes

Sequence length	937 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-Rule MF_02002
Catalytic activity	ATP + L-isoleucine + tRNA(Ile) = AMP + diphosphate + L-isoleucyl-tRNA(Ile). HAMAP-Rule MF_02002
Cofactor	Binds 1 zinc ion per subunit By similarity.
Subunit structure	Monomer By similarity.
Subcellular location	Cytoplasm By similarity.
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-Rule 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 Metal-binding Nucleotide-binding Zinc
Molecular function	Aminoacyl-tRNA synthetase Ligase
Technical term	Complete proteome
Gene Ontology (GO)
Biological_process	isoleucyl-tRNA aminoacylation Inferred from electronic annotation. Source: HAMAP regulation of translational fidelity Inferred from electronic annotation. Source: GOC
Cellular_component	cytoplasm Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular_function	ATP binding Inferred from electronic annotation. Source: HAMAP aminoacyl-tRNA editing activity Inferred from electronic annotation. Source: InterPro isoleucine-tRNA ligase activity Inferred from electronic annotation. Source: HAMAP zinc ion binding Inferred from electronic annotation. Source: HAMAP
Complete GO annotation...

Sequence annotation (Features)

Feature key

Position(s)

Length

Description

Graphical view

Feature identifier

Molecule processing

Chain

1 – 937

937

Isoleucine--tRNA ligase HAMAP-Rule MF_02002

PRO_1000022081

Regions

Motif

57 – 67

11

"HIGH" region HAMAP-Rule MF_02002

Motif

597 – 601

5

"KMSKS" region HAMAP-Rule MF_02002

Sites

Metal binding

895

1

Zinc By similarity

Metal binding

898

1

Zinc By similarity

Metal binding

915

1

Zinc By similarity

Metal binding

918

1

Zinc By similarity

Binding site

556

1

Aminoacyl-adenylate By similarity

Binding site

600

1

ATP By similarity

Sequences

Sequence

Length

Mass (Da)

Tools

Q03QI3 [UniParc].

Last modified November 14, 2006. Version 1.
Checksum: E4C032D9680F36D3
Show »

FASTA

937

105,621

        10         20         30         40         50         60 
MRVKDTLNLG KTKFKMRGNL PVKEVDRQKA WAENKMYEAR QKLNEGKPTF ILHDGPPYAN 

        70         80         90        100        110        120 
GPIHMGHALN KISKDIIVRY KSMSGFRAPY VPGWDTHGLP IEQQLTKAGY DRKKMSTAEF 

       130        140        150        160        170        180 
RDLCREYALK QVDQQREGFK RLGVSAEWDN PYLTLKPEFE AAEVRVFGEM AKRGLIYKGK 

       190        200        210        220        230        240 
KPVYWSWSSE SAMAEAEVEY HDVTSPSAFY GEQVVDGKGV LDTDTYLVVW TTTPWTIPGS 

       250        260        270        280        290        300 
EGITIDAGIE YAVVKPANDD RKFVLAADLV DQNAEMFGWE DVQVIKTVMG QDLDNVTAQH 

       310        320        330        340        350        360 
PFIADRKLVV MLGDFVTTES GTGLVHTAPG LGEDDFNVGA LYHLPVLVPV DDKGYMTAEA 

       370        380        390        400        410        420 
GADFAGVFYE DANQIALDKL KAANALLKYM PYEHSYPFDW RTKKPVIFRA TPQWFASVDK 

       430        440        450        460        470        480 
IRDEILAQLK DVKFQPDWGQ RRLANMIKDR GDWVISRQRV WGVPLPIFYG EDGEAIITPE 

       490        500        510        520        530        540 
TVDHVADLFA EYGSNIWFKR EAKDLLPDGF TSEHSPNGEF TKETDIMDVW FDSGTSHQGV 

       550        560        570        580        590        600 
LAERDYLDFP ADLYLEGSDQ YRGWFNSSLI TSVAATGKAP YKQVVSQGFT LDKDGHKMSK 

       610        620        630        640        650        660 
SLGNTIAPDE IISKMGADIV RLWVTSVDSS ADVRVSTEAF VKISDSYKKL RNTMRYLLAN 

       670        680        690        700        710        720 
TSDFDPQTDA IAVDDLQPVD RHMLYQLNEF AKSVRAHYDH YDFLNIYKEL INFVVSDLSA 

       730        740        750        760        770        780 
FYLDFAKDIL YIEAADSPVR RSMQTVFYQI AVSLTKLITP ILPHTAEEIW DFLKEPEDFV 

       790        800        810        820        830        840 
QLAEMPAVLE LTDANEQPDD GHQSAWDHFM TLRSHVLKAL EEARDAKLIG KAAEAHLDLY 

       850        860        870        880        890        900 
VDEETKRLLD QLNVNVQQIL LVSGLDVASL DQAPADALTF DHLAVKVTPA AGEVCDRCRL 

       910        920        930 
TKEDVGSDSA YPHFCARCAA IVRQNFPETA TEGFDEN

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References

[1]

"Comparative genomics of the lactic acid bacteria."
Makarova K.S., Slesarev A., Wolf Y.I., Sorokin A., Mirkin B., Koonin E.V., Pavlov A., Pavlova N., Karamychev V., Polouchine N., Shakhova V., Grigoriev I., Lou Y., Rohksar D., Lucas S., Huang K., Goodstein D.M., Hawkins T.

Mills D.A.
Proc. Natl. Acad. Sci. U.S.A. 103:15611-15616(2006) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: ATCC 367 / JCM 1170.

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP000416 Genomic DNA. Translation: ABJ64539.1.
RefSeq	YP_795570.1. NC_008497.1.
3D structure databases
ProteinModelPortal	Q03QI3.
SMR	Q03QI3. Positions 1-924.
ModBase	Search...
Protein-protein interaction databases
STRING	387344.LVIS_1441.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
EnsemblBacteria	ABJ64539; ABJ64539; LVIS_1441.
GeneID	4413669.
KEGG	lbr:LVIS_1441.
PATRIC	22201819. VBILacBre134470_1378.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	COG0060.
HOGENOM	HOG000246402.
KO	K01870.
OMA	KQVLTHG.
ProtClustDB	PRK05743.
Enzyme and pathway databases
BioCyc	LBRE387344:GJ8S-1441-MONOMER.
Family and domain databases
Gene3D	3.40.50.620. 2 hits. 3.90.740.10. 1 hit.
HAMAP	MF_02002. Ile_tRNA_synth_type1.
InterPro	IPR001412. aa-tRNA-synth_I_CS. IPR002300. aa-tRNA-synth_Ia. IPR002301. Ile-tRNA-ligase. IPR023585. Ile-tRNA-ligase_type1. 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_edit. IPR010663. Znf_DNA_glyclase/IsotRNA_synth. [Graphical view]
PANTHER	PTHR11946:SF9. PTHR11946:SF9. 1 hit.
Pfam	PF08264. Anticodon_1. 1 hit. PF00133. tRNA-synt_1. 1 hit. PF06827. zf-FPG_IleRS. 1 hit. [Graphical view]
PRINTS	PR00984. TRNASYNTHILE.
SUPFAM	SSF47323. tRNAsyn_1a_bind. 1 hit. SSF50677. ValRS_IleRS_edit. 1 hit.
TIGRFAMs	TIGR00392. ileS. 1 hit.
PROSITE	PS00178. AA_TRNA_LIGASE_I. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

SYI_LACBA

Accession

Primary (citable) accession number: Q03QI3

Entry history

Integrated into UniProtKB/Swiss-Prot:	January 15, 2008
Last sequence update:	November 14, 2006
Last modified:	May 1, 2013
This is version 55 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program

Relevant documents

Aminoacyl-tRNA synthetases

List of aminoacyl-tRNA synthetase entries

SIMILARITY comments

Index of protein domains and families

Preferred order of sections

Names and origin

Protein attributes

General annotation (Comments)

Ontologies

Sequence annotation (Features)

Molecule processing

Regions

Sites

Sequences

References

Cross-references

Sequence databases

3D structure databases

Protein-protein interaction databases

Protocols and materials databases

Genome annotation databases

Organism-specific databases

Phylogenomic databases

Enzyme and pathway databases

Family and domain databases

Entry information

Relevant documents