製品: YB1 Antibody
カタログ: DF2967
タンパク質の説明: Rabbit polyclonal antibody to YB1
アプリケーション: WB IHC IF/ICC
Cited expt.: WB
反応性: Human, Mouse, Rat
分子量: 50kDa(Observed); 36kD(Calculated).
ユニプロット: P67809
RRID: AB_2840947

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製品説明

ソース:
Rabbit
アプリケーション:
WB 1:500-1:2000, IHC 1:50-1:200, IF/ICC
*The optimal dilutions should be determined by the end user. For optimal experimental results, antibody reuse is not recommended.
*Tips:

WB: For western blot detection of denatured protein samples. IHC: For immunohistochemical detection of paraffin sections (IHC-p) or frozen sections (IHC-f) of tissue samples. IF/ICC: For immunofluorescence detection of cell samples. ELISA(peptide): For ELISA detection of antigenic peptide.

反応性:
Human, Mouse, Rat
クローナリティ:
Polyclonal
特異性:
YB1 Antibody detects endogenous levels of total YB1.
RRID:
AB_2840947
引用形式: Affinity Biosciences Cat# DF2967, RRID:AB_2840947.
コンジュゲート:
Unconjugated.
精製:
The antiserum was purified by peptide affinity chromatography using SulfoLink™ Coupling Resin.
保存:
Rabbit IgG in phosphate buffered saline , pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol. Store at -20 °C. Stable for 12 months from date of receipt.
別名:

折りたたみ/展開

BP 8; CBF-A; CCAAT binding transcription factor I subunit A; CCAAT-binding transcription factor I subunit A; CSDA2; CSDB; DBPB; DNA binding protein B; DNA-binding protein B; EFI-A; Enhancer factor I subunit A; MDR NF1; MGC104858; MGC110976; MGC117250; NSEP 1; NSEP1; Nuclease sensitive element binding protein 1; Nuclease-sensitive element-binding protein 1; p50; Q15905; Y-box binding protein 1; Y-box transcription factor; Y-box-binding protein 1; YB 1; YB-1; YBOX1_HUMAN; YBX 1; ybx1;

免疫原

免疫原:

A synthesized peptide derived from human YB1, corresponding to a region within the internal amino acids.

Uniprot:
遺伝子(ID):
タンパク質配列:
MSSEAETQQPPAAPPAAPALSAADTKPGTTGSGAGSGGPGGLTSAAPAGGDKKVIATKVLGTVKWFNVRNGYGFINRNDTKEDVFVHQTAIKKNNPRKYLRSVGDGETVEFDVVEGEKGAEAANVTGPGGVPVQGSKYAADRNHYRRYPRRRGPPRNYQQNYQNSESGEKNEGSESAPEGQAQQRRPYRRRRFPPYYMRRPYGRRPQYSNPPVQGEVMEGADNQGAGEQGRPVRQNMYRGYRPRFRRGPPRQRQPREDGNEEDKENQGDETQGQQPPQRRYRRNFNYRRRRPENPKPQDGKETKAADPPAENSSAPEAEQGGAE

研究背景

機能:

DNA- and RNA-binding protein involved in various processes, such as translational repression, RNA stabilization, mRNA splicing, DNA repair and transcription regulation. Predominantly acts as a RNA-binding protein: binds preferentially to the 5'-[CU]CUGCG-3' RNA motif and specifically recognizes mRNA transcripts modified by C5-methylcytosine (m5C). Promotes mRNA stabilization: acts by binding to m5C-containing mRNAs and recruiting the mRNA stability maintainer ELAVL1, thereby preventing mRNA decay. Component of the CRD-mediated complex that promotes MYC mRNA stability. Contributes to the regulation of translation by modulating the interaction between the mRNA and eukaryotic initiation factors (By similarity). Plays a key role in RNA composition of extracellular exosomes by defining the sorting of small non-coding RNAs, such as tRNAs, Y RNAs, Vault RNAs and miRNAs. Probably sorts RNAs in exosomes by recognizing and binding C5-methylcytosine (m5C)-containing RNAs. Acts as a key effector of epidermal progenitors by preventing epidermal progenitor senescence: acts by regulating the translation of a senescence-associated subset of cytokine mRNAs, possibly by binding to m5C-containing mRNAs. Also involved in pre-mRNA alternative splicing regulation: binds to splice sites in pre-mRNA and regulates splice site selection. Also able to bind DNA: regulates transcription of the multidrug resistance gene MDR1 is enhanced in presence of the APEX1 acetylated form at 'Lys-6' and 'Lys-7'. Binds to promoters that contain a Y-box (5'-CTGATTGGCCAA-3'), such as MDR1 and HLA class II genes. Promotes separation of DNA strands that contain mismatches or are modified by cisplatin. Has endonucleolytic activity and can introduce nicks or breaks into double-stranded DNA, suggesting a role in DNA repair. The secreted form acts as an extracellular mitogen and stimulates cell migration and proliferation.

PTMs:

Ubiquitinated by RBBP6; leading to a decrease of YBX1 transcactivational ability.

In the absence of phosphorylation the protein is retained in the cytoplasm.

Cleaved by a 20S proteasomal protease in response to agents that damage DNA. Cleavage takes place in the absence of ubiquitination and ATP. The resulting N-terminal fragment accumulates in the nucleus (By similarity).

細胞の位置付け:

Cytoplasm. Nucleus. Cytoplasmic granule. Secreted. Secreted>Extracellular exosome.
Note: Predominantly cytoplasmic in proliferating cells (PubMed:12604611). Cytotoxic stress and DNA damage enhance translocation to the nucleus (PubMed:14718551). Localized in cytoplasmic mRNP granules containing untranslated mRNAs (PubMed:25229427). Shuttles between nucleus and cytoplasm (PubMed:25229427). Localized with DDX1, MBNL1 and TIAL1 in stress granules upon stress (PubMed:18335541). Secreted by mesangial and monocytic cells after inflammatory challenges (PubMed:19483673).

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionSubcellular location
タンパク質ファミリー:

In the CSD domain, Trp-65 specifically recognizes C5-methylcytosine (m5C) modification through its indole ring.

Belongs to the YBX1 family.

参考文献

1). Y-box binding protein 1 augments sorafenib resistance via the PI3K/Akt signaling pathway in hepatocellular carcinoma. World Journal of Gastroenterology, 2021 (PubMed: 34366628) [IF=4.3]

Application: WB    Species: Mice    Sample:

Figure 5 Sorafenib efficiency improves after Y-box binding protein 1 knockdown in vivo. A: The morphologies of collected tumors in subcutaneous Huh7 xenografts in nude mice; B: Tumor growth curves; C: Tumor weights were measured after collection; D: Hematoxylin-eosin (HE) and immunohistochemical staining for proliferating cell nuclear antigen; E, F: Western blot analysis showed Y-box binding protein 1 (YB-1), phosphorylated protein kinase B (p-Akt), protein kinase B (Akt), phosphorylated phosphoinositide-3-kinase (p-PI3K), and phosphoinositide-3-kinase (PI3K) expression in cells infected with lentivirus encoding non-specific short hairpin RNA as a negative control (Lv-shNC) ± sorafenib vs lentivirus containing short hairpin RNA targeting YB-1 (Lv-shYB-1) ± sorafenib groups. p-Akt (normalized to Akt) and p-PI3K (normalized to PI3K) protein levels were measured by scanning densitometry. Protein samples derived from the same experiment and gels were processed in parallel. aP < 0.05, bP < 0.01, cP < 0.001 vs the indicated groups. PCNA: Proliferating cell nuclear antigen.

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