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Protein

Ubiquitin-like protein 4A

Gene

Ubl4a

Organism
Rattus norvegicus (Rat)
Status
Reviewed-Annotation score: -Experimental evidence at transcript leveli

Functioni

As part of a cytosolic protein quality control complex, the BAG6/BAT3 complex, maintains misfolded and hydrophobic patches-containing proteins in a soluble state and participates to their proper delivery to the endoplasmic reticulum or alternatively can promote their sorting to the proteasome where they undergo degradation. The BAG6/BAT3 complex is involved in the post-translational delivery of tail-anchored/type II transmembrane proteins to the endoplasmic reticulum membrane. Recruited to ribosomes, it interacts with the transmembrane region of newly synthesized tail-anchored proteins and together with SGTA and ASNA1 mediates their delivery to the endoplasmic reticulum. Client proteins that cannot be properly delivered to the endoplasmic reticulum are ubiquitinated and sorted to the proteasome. Similarly, the BAG6/BAT3 complex also functions as a sorting platform for proteins of the secretory pathway that are mislocalized to the cytosol either delivering them to the proteasome for degradation or to the endoplasmic reticulum. The BAG6/BAT3 complex also plays a role in the endoplasmic reticulum-associated degradation (ERAD), a quality control mechanism that eliminates unwanted proteins of the endoplasmic reticulum through their retrotranslocation to the cytosol and their targeting to the proteasome. It maintains these retrotranslocated proteins in an unfolded yet soluble state condition in the cytosol to ensure their proper delivery to the proteasome.By similarity

GO - Molecular functioni

GO - Biological processi

Keywordsi

Biological processTransport

Names & Taxonomyi

Protein namesi
Recommended name:
Ubiquitin-like protein 4A
Gene namesi
Name:Ubl4a
Synonyms:Ubl4
OrganismiRattus norvegicus (Rat)
Taxonomic identifieri10116 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaMyomorphaMuroideaMuridaeMurinaeRattus
Proteomesi
  • UP000002494 Componenti: Chromosome X

Organism-specific databases

RGDi1563983 Ubl4a

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte; Source: COMPARTMENTS

Keywords - Cellular componenti

Cytoplasm, Nucleus

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00004037391 – 157Ubiquitin-like protein 4AAdd BLAST157

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Cross-linki48Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin)By similarity
Modified residuei90PhosphoserineBy similarity1

Post-translational modificationi

Polyubiquitinated. Ubiquitination by AMFR and deubiquitination by USP13 may regulate the interaction between the BAG6/BAT complex and SGTA and therefore may regulate client proteins fate.By similarity

Keywords - PTMi

Isopeptide bond, Phosphoprotein, Ubl conjugation

Proteomic databases

PaxDbiB2GV38
PeptideAtlasiB2GV38
PRIDEiB2GV38

PTM databases

iPTMnetiB2GV38
PhosphoSitePlusiB2GV38

Expressioni

Gene expression databases

BgeeiENSRNOG00000053061
GenevisibleiB2GV38 RN

Interactioni

Subunit structurei

Component of the BAG6/BAT3 complex, at least composed of BAG6, UBL4A and GET4/TRC35. Interacts with BAG6; the interaction is direct and required for UBL4A protein stability. Interacts with USP13; may be indirect via BAG6.By similarity

GO - Molecular functioni

Protein-protein interaction databases

STRINGi10116.ENSRNOP00000053153

Structurei

3D structure databases

ProteinModelPortaliB2GV38
SMRiB2GV38
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini1 – 76Ubiquitin-likePROSITE-ProRule annotationAdd BLAST76

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni96 – 138Required and sufficient for interaction with BAG6By similarityAdd BLAST43

Phylogenomic databases

eggNOGiKOG0001 Eukaryota
COG5272 LUCA
GeneTreeiENSGT00730000111022
HOGENOMiHOG000006827
HOVERGENiHBG072205
InParanoidiB2GV38
OMAiYPGIKDG
OrthoDBiEOG091G0XVA
PhylomeDBiB2GV38
TreeFamiTF354228

Family and domain databases

InterProiView protein in InterPro
IPR019956 Ubiquitin
IPR029071 Ubiquitin-like_domsf
IPR019954 Ubiquitin_CS
IPR000626 Ubiquitin_dom
PfamiView protein in Pfam
PF00240 ubiquitin, 1 hit
PRINTSiPR00348 UBIQUITIN
SMARTiView protein in SMART
SM00213 UBQ, 1 hit
SUPFAMiSSF54236 SSF54236, 1 hit
PROSITEiView protein in PROSITE
PS00299 UBIQUITIN_1, 1 hit
PS50053 UBIQUITIN_2, 1 hit

Sequencei

Sequence statusi: Complete.

B2GV38-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MQLTVKALQG RECSLQVAED ELVSTLKHLV SDKLNVPVRQ QRLLFKGKAL
60 70 80 90 100
ADEKRLSDYN IGPNSKLNLV VKPLEKVLLE EGSAHRLVDS SATPIWQLIS
110 120 130 140 150
KVLARHFSIG DASRVLEQLQ RDYDRSLSRL TLDDIERLAS RFLHPEVTEA

MEKGFCK
Length:157
Mass (Da):17,791
Last modified:June 10, 2008 - v1
Checksum:iE8F80221F03606A9
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CH474099 Genomic DNA Translation: EDL84970.1
BC166513 mRNA Translation: AAI66513.1
RefSeqiNP_001099816.1, NM_001106346.2
UniGeneiRn.1138

Genome annotation databases

EnsembliENSRNOT00000091810; ENSRNOP00000074769; ENSRNOG00000053061
GeneIDi293864
KEGGirno:293864

Similar proteinsi

Entry informationi

Entry nameiUBL4A_RAT
AccessioniPrimary (citable) accession number: B2GV38
Entry historyiIntegrated into UniProtKB/Swiss-Prot: January 11, 2011
Last sequence update: June 10, 2008
Last modified: June 20, 2018
This is version 69 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

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