UniProtKB - A0A5B8AED5 (A0A5B8AED5_LISSE)
Protein
SsrA-binding protein
Gene
smpB
Organism
Listeria seeligeri
Status
Functioni
Required for rescue of stalled ribosomes mediated by trans-translation. Binds to transfer-messenger RNA (tmRNA), required for stable association of tmRNA with ribosomes. tmRNA and SmpB together mimic tRNA shape, replacing the anticodon stem-loop with SmpB. tmRNA is encoded by the ssrA gene; the 2 termini fold to resemble tRNA(Ala) and it encodes a 'tag peptide', a short internal open reading frame. During trans-translation Ala-aminoacylated tmRNA acts like a tRNA, entering the A-site of stalled ribosomes, displacing the stalled mRNA. The ribosome then switches to translate the ORF on the tmRNA; the nascent peptide is terminated with the 'tag peptide' encoded by the tmRNA and targeted for degradation. The ribosome is freed to recommence translation, which seems to be the essential function of trans-translation.UniRule annotation
GO - Molecular functioni
- RNA binding Source: UniProtKB-UniRule
GO - Biological processi
- trans-translation Source: UniProtKB-UniRule
Keywordsi
Molecular function | RNA-bindingUniRule annotationARBA annotation |
Names & Taxonomyi
Protein namesi | Recommended name: SsrA-binding proteinUniRule annotationAlternative name(s): Small protein BUniRule annotation |
Gene namesi | Name:smpBUniRule annotationImported ORF Names:EOT00_12880Imported |
Organismi | Listeria seeligeriImported |
Taxonomic identifieri | 1640 [NCBI] |
Taxonomic lineagei | Bacteria › Firmicutes › Bacilli › Bacillales › Listeriaceae › Listeria |
Proteomesi |
|
Subcellular locationi
- Cytoplasm UniRule annotation Note: The tmRNA-SmpB complex associates with stalled 70S ribosomes.UniRule annotation
GO - Cellular componenti
- cytoplasm Source: UniProtKB-SubCell
Keywords - Cellular componenti
CytoplasmUniRule annotationARBA annotationFamily & Domainsi
Region
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Regioni | 131 – 154 | DisorderedSequence analysisAdd BLAST | 24 |
Sequence similaritiesi
Belongs to the SmpB family.UniRule annotation
Family and domain databases
CDDi | cd09294, SmpB, 1 hit |
Gene3Di | 2.40.280.10, 1 hit |
HAMAPi | MF_00023, SmpB, 1 hit |
InterProi | View protein in InterPro IPR023620, SmpB IPR000037, SsrA-bd_prot IPR020081, SsrA-bd_prot_CS |
PANTHERi | PTHR30308, PTHR30308, 1 hit |
Pfami | View protein in Pfam PF01668, SmpB, 1 hit |
SUPFAMi | SSF74982, SSF74982, 1 hit |
TIGRFAMsi | TIGR00086, smpB, 1 hit |
PROSITEi | View protein in PROSITE PS01317, SSRP, 1 hit |
i Sequence
Sequence statusi: Complete.
A0A5B8AED5-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MPKGDGKLVA QNKKARHDYA IEETFEAGIV LQGTEIKSVR NARVNLKDSY
60 70 80 90 100
ARIDKGEIFL HNMHISPYEQ GNRYNHDPLR TRKLLLHKKQ ISRLIGETKE
110 120 130 140 150
SGYSIVPLKM YIKDGYAKVL IGVARGKKKY DKRQDLKQKE AKRDIERAFK
ERQQ
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | CP034772 Genomic DNA Translation: QDA75788.1 |
RefSeqi | WP_003723350.1, NZ_MJUD01000009.1 |
Genome annotation databases
GeneIDi | 51670398 |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | CP034772 Genomic DNA Translation: QDA75788.1 |
RefSeqi | WP_003723350.1, NZ_MJUD01000009.1 |
3D structure databases
SMRi | A0A5B8AED5 |
ModBasei | Search... |
Genome annotation databases
GeneIDi | 51670398 |
Family and domain databases
CDDi | cd09294, SmpB, 1 hit |
Gene3Di | 2.40.280.10, 1 hit |
HAMAPi | MF_00023, SmpB, 1 hit |
InterProi | View protein in InterPro IPR023620, SmpB IPR000037, SsrA-bd_prot IPR020081, SsrA-bd_prot_CS |
PANTHERi | PTHR30308, PTHR30308, 1 hit |
Pfami | View protein in Pfam PF01668, SmpB, 1 hit |
SUPFAMi | SSF74982, SSF74982, 1 hit |
TIGRFAMsi | TIGR00086, smpB, 1 hit |
PROSITEi | View protein in PROSITE PS01317, SSRP, 1 hit |
ProtoNeti | Search... |
MobiDBi | Search... |
Entry informationi
Entry namei | A0A5B8AED5_LISSE | |
Accessioni | A0A5B8AED5Primary (citable) accession number: A0A5B8AED5 | |
Entry historyi | Integrated into UniProtKB/TrEMBL: | November 13, 2019 |
Last sequence update: | November 13, 2019 | |
Last modified: | December 2, 2020 | |
This is version 6 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Unreviewed (UniProtKB/TrEMBL) |