UniProt functional annotation for P19120

UniProt code: P19120.

Organism: Bos taurus (Bovine).
Taxonomy: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Laurasiatheria; Cetartiodactyla; Ruminantia; Pecora; Bovidae; Bovinae; Bos.
 
Function: Acts as a repressor of transcriptional activation. Inhibits the transcriptional coactivator activity of CITED1 on Smad-mediated transcription. Chaperone. Component of the PRP19- CDC5L complex that forms an integral part of the spliceosome and is required for activating pre-mRNA splicing. May have a scaffolding role in the spliceosome assembly as it contacts all other components of the core complex (By similarity). Binds bacterial lipopolysaccharide (LPS) and mediates LPS-induced inflammatory response, including TNF secretion. Participates in the ER-associated degradation (ERAD) quality control pathway in conjunction with J domain-containing co-chaperones and the E3 ligase CHIP (By similarity). {ECO:0000250}.
 
Subunit: Identified in a IGF2BP1-dependent mRNP granule complex containing untranslated mRNAs. Interacts with PACRG. Interacts with HSPH1/HSP105. Interacts with IRAK1BP1 and BAG1. Interacts with DNAJC7 and DNAJB14 (via J domain). Interacts (via C-terminus) with the E3 ligase CHIP forming a 210 kDa complex of one CHIP and two HSPA8 molecules. Interacts with CITED1 (via N-terminus); the interaction suppresses the association of CITED1 to p300/CBP and Smad-mediated transcription transactivation. Component of the PRP19-CDC5L splicing complex composed of a core complex comprising a homotetramer of PRPF19, CDC5L, PLRG1 and BCAS2, and at least three less stably associated proteins CTNNBL1, CWC15 and HSPA8. Interacts with TRIM5. Part of a complex composed at least of ASCL2, EMSY, HCFC1, HSPA8, CCAR2, MATR3, MKI67, RBBP5, TUBB2A, WDR5 and ZNF335; this complex may have a histone H3-specific methyltransferase activity. Interacts with METTL21A. Following LPS binding, may form a complex with CXCR4, GDF5 and HSP90AA1. Interacts with PARK2. Interacts with FOXP3. Interacts with DNAJC9 (via J domain). Interacts with MLLT11. Interacts with RNF207. Interacts with DNAJC21. Interacts with DNAJB2. Interacts with TTC1 (via TPR repeats). Interacts with SGTA (via TPR repeats). {ECO:0000250|UniProtKB:P11142, ECO:0000250|UniProtKB:P63018}.
Subcellular location: Cytoplasm {ECO:0000250}. Melanosome {ECO:0000250}. Nucleus, nucleolus {ECO:0000250}. Cell membrane {ECO:0000250}. Note=Localized in cytoplasmic mRNP granules containing untranslated mRNAs. Translocates rapidly from the cytoplasm to the nuclei, and especially to the nucleoli, upon heat shock (By similarity). {ECO:0000250}.
Tissue specificity: Ubiquitous.
Induction: Constitutively synthesized.
Domain: The N-terminal 1-386 residues constitute the ATPase domain, while residues 387-646 form the peptide-binding domain. {ECO:0000250}.
Ptm: Acetylated. {ECO:0000250}.
Ptm: ISGylated. {ECO:0000250}.
Ptm: Trimethylation at Lys-561 reduces fibrillar SNCA binding. {ECO:0000250}.
Similarity: Belongs to the heat shock protein 70 family. {ECO:0000305}.

Annotations taken from UniProtKB at the EBI.