CREB-BP Antibody | Affinity Biosciences

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CREB-BP Antibody - AF0139 at 1/200 staining human testis tissue sections by IHC-P.

CREB-BP Antibody - Figure 2 CITED4/CBP pathway proteins are primarily present in Hu sheep GCs.

Product:	CREB-BP Antibody
Catalog:	AF0139
Description:	Rabbit polyclonal antibody to CREB-BP
Application:	WB IHC IF/ICC
Cited expt.:	IHC
Reactivity:	Human, Mouse
Prediction:	Pig, Bovine, Horse, Sheep, Dog, Chicken, Xenopus
Mol.Wt.:	265kDa; 265kD(Calculated).
Uniprot:	Q92793
RRID:	AB_2833321

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Blocking peptides are peptides that bind specifically to the target antibody and block antibody binding. These peptide usually contains the epitope recognized by the antibody. Antibodies bound to the blocking peptide no longer bind to the epitope on the target protein. By comparing the staining from the blocked antibody versus the antibody alone, one can see which staining is specific.

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IHC Protocol

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Product Info

Source:

Rabbit

Application:

WB 1:500-1:3000, IHC 1:50-1:200, IF/ICC: 1:100-1:500
*The optimal dilutions should be determined by the end user.
*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.

Reactivity:

Human,Mouse

Prediction:

Pig(100%), Bovine(100%), Horse(100%), Sheep(100%), Dog(100%), Chicken(100%), Xenopus(100%)

Clonality:

Polyclonal

Specificity:

CREB-BP Antibody detects endogenous levels of total CREB-BP.

RRID:

AB_2833321
Cite Format: Affinity Biosciences Cat# AF0139, RRID:AB_2833321.

Conjugate:

Unconjugated.

Purification:

The antiserum was purified by peptide affinity chromatography using SulfoLink™ Coupling Resin (Thermo Fisher Scientific).

Storage:

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.

Alias:

Fold/Unfold

CBP; CBP_HUMAN; CREB binding protein; CREB-binding protein; Crebbp; Cyclic AMP responsive enhancer binding protein; KAT3A; RSTS; RTS; Rubinstein Taybi syndrome;

Immunogens

Immunogen:

A synthesized peptide derived from human CREB-BP, corresponding to a region within C-terminal amino acids.

Uniprot:

Q92793(CBP_HUMAN) >>Visit HPA database.

Gene(ID):

CREBBP(1387)

Description:

CBP a protein acetyltransferase that can transcriptionally activate histones. Acetylates the NCOA3 coactivator. Binds specifically to phosphorylated CREB1 and enhances its transcriptional activity toward cAMP-responsive genes. Methylation of the KIX domain by CARM1 blocks association with CREB, blocking CREB signaling, and activating the apoptotic response. Found in a complex containing NCOA2, NCOA3, IKKA, IKKB, and IKBKG. Probably part of a complex with HIF1A and EP300.

Sequence:

Q92793 CBP_HUMAN:
Protein BLAST With
NCBI/
ExPASy/
Uniprot

MAENLLDGPPNPKRAKLSSPGFSANDSTDFGSLFDLENDLPDELIPNGGELGLLNSGNLVPDAASKHKQLSELLRGGSGSSINPGIGNVSASSPVQQGLGGQAQGQPNSANMASLSAMGKSPLSQGDSSAPSLPKQAASTSGPTPAASQALNPQAQKQVGLATSSPATSQTGPGICMNANFNQTHPGLLNSNSGHSLINQASQGQAQVMNGSLGAAGRGRGAGMPYPTPAMQGASSSVLAETLTQVSPQMTGHAGLNTAQAGGMAKMGITGNTSPFGQPFSQAGGQPMGATGVNPQLASKQSMVNSLPTFPTDIKNTSVTNVPNMSQMQTSVGIVPTQAIATGPTADPEKRKLIQQQLVLLLHAHKCQRREQANGEVRACSLPHCRTMKNVLNHMTHCQAGKACQVAHCASSRQIISHWKNCTRHDCPVCLPLKNASDKRNQQTILGSPASGIQNTIGSVGTGQQNATSLSNPNPIDPSSMQRAYAALGLPYMNQPQTQLQPQVPGQQPAQPQTHQQMRTLNPLGNNPMNIPAGGITTDQQPPNLISESALPTSLGATNPLMNDGSNSGNIGTLSTIPTAAPPSSTGVRKGWHEHVTQDLRSHLVHKLVQAIFPTPDPAALKDRRMENLVAYAKKVEGDMYESANSRDEYYHLLAEKIYKIQKELEEKRRSRLHKQGILGNQPALPAPGAQPPVIPQAQPVRPPNGPLSLPVNRMQVSQGMNSFNPMSLGNVQLPQAPMGPRAASPMNHSVQMNSMGSVPGMAISPSRMPQPPNMMGAHTNNMMAQAPAQSQFLPQNQFPSSSGAMSVGMGQPPAQTGVSQGQVPGAALPNPLNMLGPQASQLPCPPVTQSPLHPTPPPASTAAGMPSLQHTTPPGMTPPQPAAPTQPSTPVSSSGQTPTPTPGSVPSATQTQSTPTVQAAAQAQVTPQPQTPVQPPSVATPQSSQQQPTPVHAQPPGTPLSQAAASIDNRVPTPSSVASAETNSQQPGPDVPVLEMKTETQAEDTEPDPGESKGEPRSEMMEEDLQGASQVKEETDIAEQKSEPMEVDEKKPEVKVEVKEEEESSSNGTASQSTSPSQPRKKIFKPEELRQALMPTLEALYRQDPESLPFRQPVDPQLLGIPDYFDIVKNPMDLSTIKRKLDTGQYQEPWQYVDDVWLMFNNAWLYNRKTSRVYKFCSKLAEVFEQEIDPVMQSLGYCCGRKYEFSPQTLCCYGKQLCTIPRDAAYYSYQNRYHFCEKCFTEIQGENVTLGDDPSQPQTTISKDQFEKKKNDTLDPEPFVDCKECGRKMHQICVLHYDIIWPSGFVCDNCLKKTGRPRKENKFSAKRLQTTRLGNHLEDRVNKFLRRQNHPEAGEVFVRVVASSDKTVEVKPGMKSRFVDSGEMSESFPYRTKALFAFEEIDGVDVCFFGMHVQEYGSDCPPPNTRRVYISYLDSIHFFRPRCLRTAVYHEILIGYLEYVKKLGYVTGHIWACPPSEGDDYIFHCHPPDQKIPKPKRLQEWYKKMLDKAFAERIIHDYKDIFKQATEDRLTSAKELPYFEGDFWPNVLEESIKELEQEEEERKKEESTAASETTEGSQGDSKNAKKKNNKKTNKNKSSISRANKKKPSMPNVSNDLSQKLYATMEKHKEVFFVIHLHAGPVINTLPPIVDPDPLLSCDLMDGRDAFLTLARDKHWEFSSLRRSKWSTLCMLVELHTQGQDRFVYTCNECKHHVETRWHCTVCEDYDLCINCYNTKSHAHKMVKWGLGLDDEGSSQGEPQSKSPQESRRLSIQRCIQSLVHACQCRNANCSLPSCQKMKRVVQHTKGCKRKTNGGCPVCKQLIALCCYHAKHCQENKCPVPFCLNIKHKLRQQQIQHRLQQAQLMRRRMATMNTRNVPQQSLPSPTSAPPGTPTQQPSTPQTPQPPAQPQPSPVSMSPAGFPSVARTQPPTTVSTGKPTSQVPAPPPPAQPPPAAVEAARQIEREAQQQQHLYRVNINNSMPPGRTGMGTPGSQMAPVSLNVPRPNQVSGPVMPSMPPGQWQQAPLPQQQPMPGLPRPVISMQAQAAVAGPRMPSVQPPRSISPSALQDLLRTLKSPSSPQQQQQVLNILKSNPQLMAAFIKQRTAKYVANQPGMQPQPGLQSQPGMQPQPGMHQQPSLQNLNAMQAGVPRPGVPPQQQAMGGLNPQGQALNIMNPGHNPNMASMNPQYREMLRRQLLQQQQQQQQQQQQQQQQQQGSAGMAGGMAGHGQFQQPQGPGGYPPAMQQQQRMQQHLPLQGSSMGQMAAQMGQLGQMGQPGLGADSTPNIQQALQQRILQQQQMKQQIGSPGQPNPMSPQQHMLSGQPQASHLPGQQIATSLSNQVRSPAPVQSPRPQSQPPHSSPSPRIQPQPSPHHVSPQTGSPHPGLAVTMASSIDQGHLGNPEQSAMLPQLNTPSRSALSSELSLVGDTTGDTLEKFVEGL

Predictions

Predictions:

Score>80(red) has high confidence and is suggested to be used for WB detection. *The prediction model is mainly based on the alignment of immunogen sequences, the results are for reference only, not as the basis of quality assurance.

Species

Results

Score

Pig

100

Horse

100

Bovine

100

Sheep

100

Dog

100

Xenopus

100

Chicken

100

Zebrafish

Rabbit

Model Confidence:
High(score>80) Medium(80>score>50) Low(score<50) No confidence

Research Backgrounds

Q92793_CBP_HUMAN

Function:

Acetylates histones, giving a specific tag for transcriptional activation. Also acetylates non-histone proteins, like DDX21, FBL, IRF2, MAFG, NCOA3, POLR1E/PAF53 and FOXO1. Binds specifically to phosphorylated CREB and enhances its transcriptional activity toward cAMP-responsive genes. Acts as a coactivator of ALX1. Acts as a circadian transcriptional coactivator which enhances the activity of the circadian transcriptional activators: NPAS2-ARNTL/BMAL1 and CLOCK-ARNTL/BMAL1 heterodimers. Acetylates PCNA; acetylation promotes removal of chromatin-bound PCNA and its degradation during nucleotide excision repair (NER). Acetylates POLR1E/PAF53, leading to decreased association of RNA polymerase I with the rDNA promoter region and coding region. Acetylates DDX21, thereby inhibiting DDX21 helicase activity. Acetylates FBL, preventing methylation of 'Gln-105' of histone H2A (H2AQ104me). Functions as a transcriptional coactivator for SMAD4 in the TGF-beta signaling pathway.

PTMs:

Methylation of the KIX domain by CARM1 blocks association with CREB. This results in the blockade of CREB signaling, and in activation of apoptotic response (By similarity).

Phosphorylated by CHUK/IKKA at Ser-1382 and Ser-1386; these phosphorylations promote cell growth by switching the binding preference of CREBBP from TP53 to NF-kappa-B.

Sumoylation negatively regulates transcriptional activity via the recruitment of DAAX.

Autoacetylation is required for binding to protein substrates, such as acetylated histones and acetylated TP53/p53.

Subcellular Location:

Cytoplasm. Nucleus.
Note: Recruited to nuclear bodies by SS18L1/CREST. In the presence of ALX1 relocalizes from the cytoplasm to the nucleus.

Family&Domains:

The KIX domain mediates binding to HIV-1 Tat.

Research Fields

· Cellular Processes > Cell growth and death > Cell cycle. (View pathway)

· Cellular Processes > Cellular community - eukaryotes > Adherens junction. (View pathway)

· Environmental Information Processing > Signal transduction > cAMP signaling pathway. (View pathway)

· Environmental Information Processing > Signal transduction > HIF-1 signaling pathway. (View pathway)

· Environmental Information Processing > Signal transduction > FoxO signaling pathway. (View pathway)

· Environmental Information Processing > Signal transduction > Wnt signaling pathway. (View pathway)

· Environmental Information Processing > Signal transduction > Notch signaling pathway. (View pathway)

· Environmental Information Processing > Signal transduction > TGF-beta signaling pathway. (View pathway)

· Environmental Information Processing > Signal transduction > Jak-STAT signaling pathway. (View pathway)

· Human Diseases > Neurodegenerative diseases > Huntington's disease.

· Human Diseases > Infectious diseases: Bacterial > Tuberculosis.

· Human Diseases > Infectious diseases: Viral > Hepatitis B.

· Human Diseases > Infectious diseases: Viral > Influenza A.

· Human Diseases > Infectious diseases: Viral > Human papillomavirus infection.

· Human Diseases > Infectious diseases: Viral > HTLV-I infection.

· Human Diseases > Infectious diseases: Viral > Herpes simplex infection.

· Human Diseases > Infectious diseases: Viral > Epstein-Barr virus infection.

· Human Diseases > Cancers: Overview > Pathways in cancer. (View pathway)

· Human Diseases > Cancers: Overview > Viral carcinogenesis.

· Human Diseases > Cancers: Overview > MicroRNAs in cancer.

· Human Diseases > Cancers: Specific types > Renal cell carcinoma. (View pathway)

· Human Diseases > Cancers: Specific types > Prostate cancer. (View pathway)

· Organismal Systems > Nervous system > Long-term potentiation.

· Organismal Systems > Endocrine system > Melanogenesis.

· Organismal Systems > Endocrine system > Thyroid hormone signaling pathway. (View pathway)

· Organismal Systems > Endocrine system > Glucagon signaling pathway.

References

1). Salvianolic acid B ameliorates hepatic fibrosis via inhibiting p300/CBP. European journal of pharmacology, 2025 (PubMed: 40058756) [IF=4.2]

2). CITED4 mediates proliferation, apoptosis and steroidogenesis of Hu sheep granulosa cells in vitro. Reproduction, 2021 (PubMed: 33275121) [IF=3.7]

Application: IHC Species: Hu sheep Sample: GCs

Figure 2 CITED4/CBP pathway proteins are primarily present in Hu sheep GCs. (A) Localization of CITED4 (a–c), CBP (d and e), C/EBPα (f–i), and C/EBPβ (g–m) in Hu sheep ovaries was detected by immunohistochemistry. Negative control (n–q). All sections were stained with DAB. Scale bars: 20 μm or 50 μm. GCs, granulosa cells; LCs, luteal cells. (B and C) CITED4 mRNA expression in Hu sheep female reproductive organs (B) and corpora lutea of various sizes (C) was analyzed with qRT-PCR. Data are presented as mean ± s.e.m., and different superscript letters (a–c) represent significant differences (P < 0.05). The ratio above each column represents the mean mRNA expression levels of CITED4 between experiment and control groups. Each experiment included three independent samples and was repeated three times.

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CREB-BP Antibody - #AF0139