Product Details

Purity

Greater than 90% as determined by SDS-PAGE.

Target Names

PSIP1

Uniprot No.

O75475

Research Area

Immunology

Alternative Names

CLL associated antigen KW 7; CLL-associated antigen KW-7; Dense fine speckles 70 kDa protein; DFS 70; DFS70; LEDGF; Lens epithelium derived growth factor; Lens epithelium-derived growth factor; MGC74712; p52; p75; PAIP; PC4 and SFRS1 interacting protein 1; PC4 and SFRS1 interacting protein 2; PC4 and SFRS1 interacting protein; PC4 and SFRS1-interacting protein; PSIP 1; PSIP 2; Psip1; PSIP1_HUMAN; PSIP2; Transcriptional coactivator p75/p52

Species

Homo sapiens (Human)

Source

E.coli

Expression Region

1-530aa

Target Protein Sequence

MTRDFKPGDLIFAKMKGYPHWPARVDEVPDGAVKPPTNKLPIFFFGTHETAFLGPKDIFPYSENKEKYGKPNKRKGFNEGLWEIDNNPKVKFSSQQAATKQSNASSDVEVEEKETSVSKEDTDHEEKASNEDVTKAVDITTPKAARRGRKRKAEKQVETEEAGVVTTATASVNLKVSPKRGRPAATEVKIPKPRGRPKMVKQPCPSESDIITEEDKSKKKGQEEKQPKKQPKKDEEGQKEEDKPRKEPDKKEGKKEVESKRKNLAKTGVTSTSDSEEEGDDQEGEKKRKGGRNFQTAHRRNMLKGQHEKEAADRKRKQEEQMETEQQNKDEGKKPEVKKVEKKRETSMDSRLQRIHAEIKNSLKIDNLDVNRCIEALDELASLQVTMQQAQKHTEMITTLKKIRRFKVSQVIMEKSTMLYNKFKNMFLVGEGDSVITQVLNKSLAEQRQHEEANKTKDQGKKGPNKKLEKEQTGSKTLNGGSDAQDGNQPQHNGESNEDSKDNHEASTKKKPSSEERETEISLKDSTLDN
Note: The complete sequence may include tag sequence, target protein sequence, linker sequence and extra sequence that is translated with the protein sequence for the purpose(s) of secretion, stability, solubility, etc.
If the exact amino acid sequence of this recombinant protein is critical to your application, please explicitly request the full and complete sequence of this protein before ordering.

Mol. Weight

76.1kDa

Protein Length

Full Length

Tag Info

N-terminal 6xHis-SUMO-tagged

Form

Liquid or Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.

Buffer

If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol.
Note: If you have any special requirement for the glycerol content, please remark when you place the order.
If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose.

Reconstitution

We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.

Troubleshooting and FAQs

Protein FAQs

Storage Condition

Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.

Shelf Life

The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.

Lead Time

3-7 business days

Notes

Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Datasheet & COA

Please contact us to get it.

Description

The Recombinant Human PSIP1 is a powerful research tool tailored for scientists investigating the PC4 and SFRS1-interacting protein. Also known as CLL-associated antigen KW-7, Dense fine speckles 70 kDa protein (DFS 70), Lens epithelium-derived growth factor, and Transcriptional coactivator p75/p52, this protein plays a significant role in various cellular processes, making it an essential component in the field of Immunology.

Our Recombinant Human PSIP1 is a full-length protein (1-530aa) expressed in E. coli, ensuring a consistent and reliable source for your research endeavors. The protein is N-terminal 6xHis-SUMO-tagged, facilitating purification and detection processes. With a purity greater than 90% as determined by SDS-PAGE, and available in both liquid and lyophilized powder forms, this high-quality recombinant protein offers the precision and performance necessary for your Immunology studies.

Target Background

Function

Transcriptional coactivator involved in neuroepithelial stem cell differentiation and neurogenesis. Involved in particular in lens epithelial cell gene regulation and stress responses. May play an important role in lens epithelial to fiber cell terminal differentiation. May play a protective role during stress-induced apoptosis. Isoform 2 is a more general and stronger transcriptional coactivator. Isoform 2 may also act as an adapter to coordinate pre-mRNA splicing. Cellular cofactor for lentiviral integration.

Gene References into Functions

structurally conserved IBD-binding motifs (IBMs) on known LEDGF/p75 binding partners can be regulated by phosphorylation, permitting switching between low- and high-affinity states. PMID: 29997176
findings suggest a novel role of LEDGF/p75 in protecting the unintegrated 3' processed linear HIV-1 cDNA from exonucleolytic degradation. PMID: 28914817
mono-specific anti-DFS70 antibodies are a strong discriminator between ANA positive healthy controls and patients with systemic autoimmune rheumatic diseases. PMID: 28770702
Authors report here that the endogenous levels of LEDGF/p75 are upregulated in metastatic castration resistant prostate cancer (mCRPC) cells selected for resistance to the taxane drug docetaxel (DTX). PMID: 28212536
An important role of PSIP1 in triple negative breast cancer tumorigenicity by promoting the expression of genes that control the cell cycle and tumor metastasis PMID: 28633434
We identify the Myc-interacting protein JPO2 and its partner binding protein LEDGF/p75 as critical modulators of PI3K/AKT signaling and metastasis in medulloblastoma PMID: 27013196
The association of LEDGF proteins with the FACT complex and give further support to a role of SSRP1 in HIV-1 infection. PMID: 27216501
short isoform (p52) of a transcriptional co-activator-PC4 and SF2 interacting protein (Psip1), which is known to be involved in linking transcription to RNA processing, specifically regulates the expression of the lncRNA Hottip-located at the 5' end of the Hoxa locus PMID: 28384324
Germline polymorphisms in an enhancer of PSIP1 are associated with epithelial ovarian cancer. PMID: 26840454
PSIP1 likely plays an important role in Hereditary Hearing Loss. PMID: 26689366
LEDGF/p75 Overexpression Attenuates Oxidative Stress-Induced Necrosis and Upregulates the Oxidoreductase ERP57/PDIA3/GRP58 in Prostate Cancer PMID: 26771192
common LEDGF/p75 interaction interface shared by JPO2, PogZ, MLL1, IWS1 and HIV IN PMID: 26245978
Results show that these antibodies are highly specific for dense fine speckles 70 protein DFS70/LEDGFp75 and do not target methyl CpG binding protein 2 (MeCP2). PMID: 26235378
LEDGF/p75 interacts with splicing factors, contributes to exon choice, and directs HIV-1 integration to transcription units that are highly spliced. PMID: 26545813
Together, these results provide evidence for an Integrase/Pol mediated uptake of LEDGF/p75 in HIV-1 viral particles and a specific cleavage by HIV protease. PMID: 25809198
Altogether, these results indicate that a complex containing LEDGF/p75, Iws1, and Spt6 participates in regulating postintegration steps of HIV latency. PMID: 25590759
LEDGF and 44 other novel putative nuclear targets of human thioredoxin 1 have been identified. PMID: 25231459
Results of the present work reinforce the association of PSIP1 gene and rs61744944 single nucleotide polymorphism with HIV-1 infection long-term nonprogressors status. PMID: 25047784
Data show that the same site on integrase-binding domain (IBD) of lens epithelium-derived growth factor (LEDGF) is involved in binding to MLL protein and HIV-IN (integrase), indicating an approach to target LEDGF in both leukemia and HIV infection. PMID: 25305204
Authors identified an additional LEDGF/p75-MLL interface, which overlaps with the binding site of known LEDGF/p75 interactors-HIV-1 integrase, PogZ, and JPO2. PMID: 25082813
a regulation of LEDGF interaction with chromatin by cellular partners of its PWWP domain could be involved in several processes linked to LEDGF tethering properties, such as lentiviral integration, DNA repair or transcriptional regulation PMID: 24312278
LEDGF is crucial for the growth and survival of HPV-positive cancer cells PMID: 24604027
Data indicate that JPO2 and LEDGF/p75 interact directly and specifically in vivo through the specific interaction domain of JPO2 and the C-terminal domain of LEDGF/p75. PMID: 24634210
conclude that FBXO10, a candidate breast cancer susceptibility associated gene, is induced by cellular stress and LEDGF may play a role in expression of this gene PMID: 23138933
Data indicate that the stabilized peptides inhibit the interaction of HIV-1 integrase (IN) with the cellular cofactor LEDGF/p75. PMID: 23758584
LEDGF organizes and stabilizes an active integrase tetramer suitable for specific viral DNA integration. PMID: 23593299
Although identified in a cohort of long-term nonprogressors, our study did not indicate that the I436S or T473I mutation in LEDGF/p75 affects the interaction with HIV-1 integrase. PMID: 23211777
Collectively, results reveal the involvement of LEDGF-mediated elevated expression of Hsp27-dependent survival pathway(s) in prostate cancer PMID: 22647853
The observed variation in LEDGF/p75 expression was not correlated with the disease progression. PMID: 23226247
A role for the human immunodeficiency virus type 1 capsid CA protein in determining the dependency of HIV-1 on LEDGF/p75 during infection highlights a connection between the viral capsid and chromosomal DNA integration. PMID: 23097450
Cotransfection studies with Sp1 in Drosophila cells that were Sp1-deficient, showed increased LEDGF/p75 transcription. PMID: 22615874
reduced LEDGF/p75 levels may play a role in resistance to HIV-1 infection. PMID: 22479480
findings provide insights into the regulation and regulatory functions of LEDGF in Sumoylation-dependent transcriptional control that may be essential for modifying the physiology of cells to maintain cellular homeostasis PMID: 22748127
Depletion of LEDGF impairs the recruitment of C-terminal binding protein interacting protein (CtIP) to DNA DSBs and the subsequent CtIP-dependent DNA-end resection. PMID: 22773103
We propose that Psip1/p52, through its binding to both chromatin and splicing factors, might act to modulate splicing PMID: 22615581
The LEDGF/p75-MeCP2 interaction differentially influences Hsp27pr activation depending on the cellular and molecular context. PMID: 22275515
findings suggest that genetic variation in LEDGF may influence susceptibility to HIV-1 infection and disease progression, which provides in-vivo evidence that LEDGF/p75 is an important host cofactor for HIV-1 replication PMID: 22317832
Results further establish LEDGF/p75 as a cancer-related protein, and provide a rationale for ongoing studies aimed at understanding the clinical significance of its expression in specific human cancers. PMID: 22276150
The fusion genes combining NUP98 exon 11/12 with PSIP1 exon 8 may be implicated in the pathogenesis of myelodysplastic syndrome (MDS). PMID: 22103895
P23H rhodopsin as well as WT rhodopsin form aggregates in RPE cells and LEDGF(1-326) decreases these aggregates. Further, LEDGF(1-326) reduces the RPE cell damage caused by P23H rhodopsin. PMID: 21915354
Computational, biochemical, and genetic approaches enabled us to identify the transcription factor Sp1 as a key modulator of the PSIP1 promoter, controlling LEDGF/p75 transcription through two binding sites PMID: 22019592
LEDGF/DFS70 activates the MK2/IL6/STAT3 pathway in HaCaT keratinocytes. PMID: 21676593
We conclude that serum IgE-anti-DFS70 autoantibodies (aAbs) and IgG(4)-anti-DFS70 aAbs may be related to the severity of atopic dermatitis. PMID: 21329475
Association of polymorphisms in the LEDGF/p75 gene (PSIP1) with susceptibility to HIV-1 infection and disease progression may affect patients outcomes. PMID: 21681054
We confirm that p75 is useful in differentiating atypical fibroxanthoma from spindle cell melanoma. PMID: 21623867
The memory subset of CD4+ T cells showed significantly higher expression levels of APOBEC3G, TRIM5alpha, and LEDGF/p75. PMID: 21784078
The effect of HIV-1 integrase on the chromatin binding of LEDGF/p75 requires the direct interaction of these two proteins. PMID: 21510906
LEDGF dominant interference and depletion impair HIV-1 integration at distinct postentry stages. PMID: 21270171
ectopic expression of LEDGF/DFS70 in keratinocytes could be involved in the pathology of psoriasis vulgaris PMID: 20631726
It appears that the lack of integration observed in HIV-1 infected LEDGF/p75-knockdown cells is due mainly to the inhibitory effect of Rev following the formation of a Rev-integrase complex. PMID: 20678206

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Involvement in disease

A chromosomal aberration involving PSIP1 is associated with pediatric acute myeloid leukemia (AML) with intermediate characteristics between M2-M3 French-American-British (FAB) subtypes. Translocation t(9;11)(p22;p15) with NUP98. The chimeric transcript is an in-frame fusion of NUP98 exon 8 to PSIP1 exon 4.

Subcellular Location

Nucleus. Note=Remains chromatin-associated throughout the cell cycle.

Protein Families

HDGF family

Tissue Specificity

Widely expressed. Expressed at high level in the thymus. Expressed in fetal and adult brain. Expressed in neurons, but not astrocytes. Markedly elevated in fetal as compared to adult brain. In the adult brain, expressed in the subventricular zone (SVZ), i

Database Links

HGNC: 9527

OMIM: 603620

KEGG: hsa:11168

STRING: 9606.ENSP00000370109

UniGene: Hs.658434

Code	CSB-EP018860HU
Abbreviation	Recombinant Human PSIP1 protein
MSDS	MSDS Datasheet
Size	$224
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Image	(Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel. Based on the SEQUEST from database of E.coli host and target protein, the LC-MS/MS Analysis result of CSB-EP018860HU could indicate that this peptide derived from E.coli-expressed Homo sapiens (Human) PSIP1. Based on the SEQUEST from database of E.coli host and target protein, the LC-MS/MS Analysis result of CSB-EP018860HU could indicate that this peptide derived from E.coli-expressed Homo sapiens (Human) PSIP1.
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Recombinant Human PC4 and SFRS1-interacting protein (PSIP1)

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