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Protein

Probable tRNA sulfurtransferase

Gene

thiI

Organism
Mycoplasma pneumoniae (strain ATCC 29342 / M129)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

Catalyzes the ATP-dependent transfer of a sulfur to tRNA to produce 4-thiouridine in position 8 of tRNAs, which functions as a near-UV photosensor. Also catalyzes the transfer of sulfur to the sulfur carrier protein ThiS, forming ThiS-thiocarboxylate. This is a step in the synthesis of thiazole, in the thiamine biosynthesis pathway. The sulfur is donated as persulfide by IscS.UniRule annotation

Catalytic activityi

L-cysteine + 'activated' tRNA = L-serine + tRNA containing a thionucleotide.UniRule annotation
[IscS]-SSH + [ThiS]-COAMP = [IscS]-SH + [ThiS]-COSH + AMP.UniRule annotation

Pathwayi: thiamine diphosphate biosynthesis

This protein is involved in the pathway thiamine diphosphate biosynthesis, which is part of Cofactor biosynthesis.UniRule annotation
View all proteins of this organism that are known to be involved in the pathway thiamine diphosphate biosynthesis and in Cofactor biosynthesis.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei269ATPUniRule annotation1
Binding sitei287ATP; via amide nitrogenUniRule annotation1
Binding sitei296ATPUniRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi185 – 186ATPUniRule annotation2
Nucleotide bindingi210 – 211ATPUniRule annotation2

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Transferase

Keywords - Biological processi

Thiamine biosynthesis

Keywords - Ligandi

ATP-binding, Nucleotide-binding, RNA-binding, tRNA-binding

Enzyme and pathway databases

UniPathwayiUPA00060.

Names & Taxonomyi

Protein namesi
Recommended name:
Probable tRNA sulfurtransferaseUniRule annotation (EC:2.8.1.4UniRule annotation)
Alternative name(s):
Sulfur carrier protein ThiS sulfurtransferaseUniRule annotation
Thiamine biosynthesis protein ThiIUniRule annotation
tRNA 4-thiouridine synthaseUniRule annotation
Gene namesi
Name:thiIUniRule annotation
Ordered Locus Names:MPN_550
ORF Names:MP292
OrganismiMycoplasma pneumoniae (strain ATCC 29342 / M129)
Taxonomic identifieri272634 [NCBI]
Taxonomic lineageiBacteriaTenericutesMollicutesMycoplasmataceaeMycoplasma
Proteomesi
  • UP000000808 Componenti: Chromosome

Subcellular locationi

  • Cytoplasm UniRule annotation

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001548511 – 387Probable tRNA sulfurtransferaseAdd BLAST387

Structurei

3D structure databases

ProteinModelPortaliP75228.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini67 – 167THUMPUniRule annotationAdd BLAST101

Sequence similaritiesi

Belongs to the ThiI family.UniRule annotation
Contains 1 THUMP domain.UniRule annotation

Phylogenomic databases

KOiK03151.
OMAiPDEDCCT.

Family and domain databases

Gene3Di3.40.50.620. 1 hit.
HAMAPiMF_00021. ThiI. 1 hit.
InterProiIPR014729. Rossmann-like_a/b/a_fold.
IPR020536. ThiI_AANH.
IPR004114. THUMP_dom.
IPR003720. tRNA_STrfase.
[Graphical view]
PfamiPF02568. ThiI. 1 hit.
PF02926. THUMP. 1 hit.
[Graphical view]
SMARTiSM00981. THUMP. 1 hit.
[Graphical view]
TIGRFAMsiTIGR00342. TIGR00342. 1 hit.
PROSITEiPS51165. THUMP. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P75228-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MGLHNEPNTI LICRYGELVL KGKNRLQFVK QLKKNVKQAF KKLSITNPVD
60 70 80 90 100
YQFDMLVVGE VISTQRSLLK NLFTRLPGLS VCLFALQIPH DEAQLLALLQ
110 120 130 140 150
QVVQSHPSFK IEVRRRDKLF ACNSSAFKKY LALQLWEKYQ LKGKLVDPAI
160 170 180 190 200
TVHVEVTKEH FLIISESFNG IGGLPVFTSG TALALLSGGI DSPVAASLVL
210 220 230 240 250
QRGFNVDFIT FINEPGHNAA TIGKIQRLAN LVSLNQTLCT GRLFVFDFTD
260 270 280 290 300
LQKELSHISL EGYRIVLMRR CFYKIASLFK YDCLITGEAL GQVASQTIDN
310 320 330 340 350
LKVIQAVVPN TFVIRPLIGL SKDKIIEWAK ALGTFETSIE HHMDTCTVFA
360 370 380
PKKPTTKAKL AIVEKLESEL LFVRELIEAG VKKLQND
Length:387
Mass (Da):43,341
Last modified:February 1, 1997 - v1
Checksum:iE418669E7A8F64DF
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
U00089 Genomic DNA. Translation: AAB95940.1.
PIRiS73618.
RefSeqiNP_110239.1. NC_000912.1.
WP_010874907.1. NC_000912.1.

Genome annotation databases

EnsemblBacteriaiAAB95940; AAB95940; MPN_550.
GeneIDi877210.
KEGGimpn:MPN550.
PATRICi20022577. VBIMycPne110_0612.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
U00089 Genomic DNA. Translation: AAB95940.1.
PIRiS73618.
RefSeqiNP_110239.1. NC_000912.1.
WP_010874907.1. NC_000912.1.

3D structure databases

ProteinModelPortaliP75228.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAB95940; AAB95940; MPN_550.
GeneIDi877210.
KEGGimpn:MPN550.
PATRICi20022577. VBIMycPne110_0612.

Phylogenomic databases

KOiK03151.
OMAiPDEDCCT.

Enzyme and pathway databases

UniPathwayiUPA00060.

Family and domain databases

Gene3Di3.40.50.620. 1 hit.
HAMAPiMF_00021. ThiI. 1 hit.
InterProiIPR014729. Rossmann-like_a/b/a_fold.
IPR020536. ThiI_AANH.
IPR004114. THUMP_dom.
IPR003720. tRNA_STrfase.
[Graphical view]
PfamiPF02568. ThiI. 1 hit.
PF02926. THUMP. 1 hit.
[Graphical view]
SMARTiSM00981. THUMP. 1 hit.
[Graphical view]
TIGRFAMsiTIGR00342. TIGR00342. 1 hit.
PROSITEiPS51165. THUMP. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiTHII_MYCPN
AccessioniPrimary (citable) accession number: P75228
Entry historyi
Integrated into UniProtKB/Swiss-Prot: November 1, 1997
Last sequence update: February 1, 1997
Last modified: November 2, 2016
This is version 96 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. Mycoplasma pneumoniae
    Mycoplasma pneumoniae (strain M129): entries and gene names
  2. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  3. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.