NCF2 Antibody, HRP conjugated

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Description

Definition and Biological Context of NCF2 Antibody, HRP Conjugated

The NCF2 Antibody, HRP (Horseradish Peroxidase) Conjugated, is a specialized immunoassay reagent designed to detect Neutrophil Cytosolic Factor 2 (NCF2), a 67 kDa protein encoded by the NCF2 gene. NCF2, also known as p67phox, is a critical cytosolic subunit of the NADPH oxidase complex responsible for reactive oxygen species (ROS) production in phagocytic cells . The HRP conjugation enables enzymatic signal amplification in applications like ELISA, facilitating direct detection of NCF2 without requiring secondary antibodies .

Key Applications

  • ELISA: Direct quantification of NCF2 in human samples using chemiluminescent or colorimetric substrates .

  • Western Blot (WB): Detection of endogenous NCF2 at ~60–67 kDa in cell lysates .

  • Immunohistochemistry (IHC): Localization of NCF2 in paraffin-embedded tissues (e.g., human tonsil, mouse spleen) .

Technical Data

ParameterDetails
Host SpeciesRabbit (polyclonal)
ConjugateHorseradish Peroxidase (HRP)
ReactivityHuman, Mouse, Rat
Recommended DilutionELISA: 1:500–1:2000; WB: 1:500–1:2000; IHC: 1:20–1:200
Storage-20°C in PBS with 0.02% sodium azide and 50% glycerol

Role in Redox Signaling and Disease

  • ROS Regulation: NCF2/p67phox is essential for NADPH oxidase activity. Knockdown of NCF2 via siRNA reduces intracellular ROS by 80%, leading to apoptosis in HCT116 and HaCat cells .

  • Chronic Granulomatous Disease (CGD): Mutations in NCF2 impair phagocytic ROS production, increasing susceptibility to infections .

Experimental Validation

Study FocusMethodologyOutcomeCitation
NCF2 in ApoptosissiRNA silencing in HCT116 cells44% apoptosis induction (vs. 15% control) via PARP cleavage
Tissue LocalizationIHC in human tonsil tissueStrong NCF2 expression in inflamed regions
ROS MeasurementFlow cytometry in HaCat cells80% reduction in ROS upon NCF2 knockdown

Complementary Reagents and Protocols

  • Substrates: Pair with chemiluminescent (e.g., SuperSignal™) or chromogenic (e.g., TMB) substrates for ELISA .

  • Signal Amplification: Use tyramide-based kits (e.g., Invitrogen SuperBoost) for low-abundance targets .

  • Protocol Optimization: Antigen retrieval with EDTA buffer (pH 8.0) recommended for IHC .

Product Specs

Buffer
Preservative: 0.03% Proclin 300
Constituents: 50% Glycerol, 0.01M PBS, pH 7.4
Form
Liquid
Lead Time
Typically, we can ship your order within 1-3 business days of receiving it. Delivery times may vary depending on the purchasing method or location. Please consult your local distributors for specific delivery details.
Synonyms
67 kDa neutrophil oxidase factor antibody; Chronic granulomatous disease autosomal 2 antibody; FLJ93058 antibody; NADPH oxidase activator 2 antibody; NCF-2 antibody; Ncf2 antibody; NCF2_HUMAN antibody; Neutrophil cytosol factor 2 antibody; Neutrophil cytosolic factor 2 (65kD, chronic granulomatous disease, autosomal 2) antibody; Neutrophil NADPH oxidase factor 2 antibody; NOXA2 antibody; P67 PHOX antibody; p67-phox antibody; p67phox antibody
Target Names
Uniprot No.

Target Background

Function
NCF2, NCF1, and a membrane-bound cytochrome b558 are required for the activation of latent NADPH oxidase. This activation is essential for superoxide production.
Gene References Into Functions
  1. We conducted an analysis of clinical and laboratory findings of CGD with mutations in the NCF2 gene within our cohort of CGD patients. Two cases exhibited a homozygous mutation (c.835_836delAC, p.T279fsX294), representing a deletion in the NCF2 gene. A third case revealed two heterozygous mutations, IVS13-2A>T on one allele and c.1099C>T (p.) on the other allele. PMID: 28035544
  2. All investigated patients presented with the same mutation (c.257 + 2T > C) in the NCF2 gene. Our research demonstrates that this mutation leads to a significant decrease in p67phox mRNA, resulting in the skipping of exon 3, which is detected in the limited amount of residual mRNA. PMID: 27220316
  3. Phosphoinositol 3-phosphate plays a crucial role in regulating reactive oxygen species production by maintaining p40phox and p67phox at the phagosomal membrane. PMID: 28096301
  4. The TLR4- and TLR2-induced IRAK-ERK pathway interacts with p67phox-Nox-2 for reactive oxygen species generation. This interaction regulates IL-1beta transcription and processing in monocytic cells. PMID: 26320741
  5. Skeletal muscle protein expression of the NADPH oxidase subunits p22(phox), p47(phox), and p67(phox) was elevated in obese individuals compared to lean individuals. Exercise training in obese subjects led to a reduction in p22(phox) and p67(phox) expression. PMID: 27765769
  6. A novel homozygous mutation was identified within the NCF2 gene. PMID: 26272171
  7. Research findings indicate a critical role of the Cys-Gly-Cys triad in Nox2 for binding p67(phox). This interaction is supported by an additional binding region located C-terminal to Cys-Gly-Cys. These two regions engage with distinct partner sites in p67(phox). PMID: 26160850
  8. This model highlights the central role of Arg-395 in the structure and stability of the quaternary NCF2/NCF4/VAV1/RAC1 NADPH oxidase complex. PMID: 25795782
  9. Data suggest that arachidonic acid induces a direct interaction between Rac-GTP-bound p67(phox) and the C-terminal cytosolic region of phagocyte NADPH oxidase Nox2. PMID: 25056956
  10. Four novel mutations in the NCF1, NCF2, and CYBB genes have been identified in chronic granulomatous disease patients in Morocco. PMID: 24596025
  11. Our findings not only establish allelic heterogeneity within NCF2 associated with SLE but also emphasize the importance of multi-ethnic cohorts for identifying predisposing variants that explain additional phenotypic variations in complex diseases such as SLE. PMID: 24163247
  12. NCF2 in Asian populations demonstrates a pattern of diversity characterized by a distinct haplotype structure. PMID: 23821607
  13. These results provide insight into the redox-sensitive signaling mechanism that mediates cell survival involving p53 and its novel target NCF2/p67phox. PMID: 23187810
  14. Case Report: this report describes defects in NCF-2, the gene encoding p67-phox, in four cases of chronic granulomatous disease. PMID: 23264412
  15. Eight novel mutations in the CYBB and NCF2 genes were identified in patients with chronic granulomatous disease. PMID: 22562447
  16. This variant reduced the binding of the NCF2 gene product p67(phox) to RAC2. This study identified a novel genetic association of RAC2 with Crohn's disease (CD) and confirmed the previously established association of NCF4 with ileal CD. PMID: 21900546
  17. NCF2 is strongly associated with an increased risk of both childhood- and adult-onset systemic lupus erythematosus due to a single nonsynonymous coding mutation (H389Q) in exon 12. PMID: 22203994
  18. p67(phox) plays a critical role in supporting reactive oxygen species production at the level of individual phagosomes. PMID: 21954286
  19. Association analysis identified five SLE susceptibility genes reaching genome-wide levels of significance: NCF2, IKZF1, IRF8, IFIH1, and TYK2 PMID: 22046141
  20. Genetic variation in the NCF2 gene was found to be associated with SLE in both US and European populations. PMID: 20842512
  21. High NCF2 expression in the cytoplasm is associated with uterine cervix carcinogenesis. PMID: 21119665
  22. The extended activation domain of p67(phox) (amino acids 190-210) containing the D(Y/F)LGK motif plays a crucial role in oxidase activation, likely by interacting with gp91(phox). PMID: 20679349
  23. Mutations in CYBB, NCF1, CYBA, or NCF2 may contribute to the development of chronic granulomatous disease. PMID: 18546332
  24. There is an increased expression of NADPH oxidase p47(-PHOX) and p67(-PHOX) factor in patients with idiopathic pulmonary fibrosis. PMID: 17651608
  25. All mutations and some polymorphisms identified in the NCF2 gene in the autosomal forms of chronic granulomatous disease are listed. Review. PMID: 20167518
  26. Our research demonstrates that p67(phox) adopts an elongated conformation when it exists not only as a monomer but also as the heterotrimer. PMID: 20375610
  27. These findings identify the activation of PKC delta and NADPH oxidase as crucial steps in retinoic acid-induced neuroblastoma cell differentiation. PMID: 20074641
  28. Alu-induced deletion of the TPR4 domain of p67-phox leads to a loss of function and accelerated degradation of the protein. PMID: 19953534
  29. In a cell-free system, covalent binding between C-terminal-truncated p67phox and rac in the correct fusion order results in a more stable complex compared to the individual components. This complex significantly influences the duration of fusion-produced oxidase activation. PMID: 11705402
  30. A detailed study of the protein-protein interactions that occur in the p40-p47-p67(phox) complex of the resting oxidase. PMID: 11796733
  31. p22(phox), gp91(phox), p47(phox), p67(phox), and p40(phox) existed as a functional complex in the cytoskeletal fraction. PMID: 11893732
  32. Val204 in p67(phox), previously found to be necessary for NADPH oxidase activity in cell-free conditions, was determined to be essential for superoxide production by intact COS-phox cells. PMID: 11929750
  33. The effect of cPLA2 on its translocation. PMID: 12101222
  34. NAD(P)H oxidase subunits p47(phox) and p67(phox) are expressed in platelets. NAD(P)H oxidase-dependent platelet superoxide anion release enhances platelet recruitment. PMID: 12130503
  35. p67phox and p47phox play roles in regulating a conformational change in cytochrome b558, initiating electron transfer in NADPH oxidase activation. PMID: 12719414
  36. NOXO1, p47phox, and p67phox regulate Nox3. PMID: 15181005
  37. NAD(P)H oxidase activity is associated with increased protein levels of p22phox, p47phox, and p67phox, and increased p22phox and nox2 (gp91phox) mRNA expression. PMID: 15256399
  38. Increased expression and activity of NAD(P)H oxidase subunits and xanthine oxidase, partly mediated through angiotensin II and PKC-dependent pathways, are significant mechanisms underlying increased oxidative stress in human coronary artery disease. PMID: 16293794
  39. Our research reveals that the p47(phox)-p67(phox) interaction is disrupted not only by deletion of the PRR but also by substitution for basic residues in the extra-PRR (K383E/K385E). PMID: 16297854
  40. Expression of p67(phox) is regulated through mechanisms that include modulation of transcription and translation. PMID: 16310324
  41. These results indicate that Hcy (homocysteine)-stimulated superoxide anion production in monocytes is regulated through PKC-dependent phosphorylation of p47phox and p67phox subunits of NADPH oxidase. PMID: 16626305
  42. NADPH oxidase assembly from p67phox was studied at the single-cell level. PMID: 16987007
  43. Chemoattractant-stimulated superoxide production can be amplified by a positive feedback loop in which p67(phox) targets Vav1-mediated Rac activation. PMID: 17060455
  44. These data clearly identify PLAGL2 as a novel regulator of NCF2/p67phox gene expression, as well as NADPH oxidase activity, contributing to a deeper understanding of the transcriptional regulation of NCF2. PMID: 17462995
  45. A novel single nucleotide polymorphism in the promoter region. PMID: 17712795
  46. This single nucleotide polymorphism leads to alternative splicing without altering gene expression or respiratory burst activity. PMID: 17910042
  47. p40(phox) translocates p67(phox) to the region of the cytochrome and subsequently switches the oxidase to an activated state dependent upon PtdIns(3)P and SH3 domain engagement. PMID: 18029359
  48. As(2)O(3) induced phosphorylation and membrane translocation of the NADPH oxidase subunit p47(phox), and it also increased translocation of Rac1 and p67(phox). PMID: 18424721
  49. Autosomal recessive CGD due to NCF-2 gene mutations, and a novel homozygous and hypomorphic NCF-2 gene mutation was discovered. PMID: 18625437
  50. p67(phox)-SH3(N) specifically functions in gp91(phox)/Nox2 activation, likely by facilitating oxidase assembly. PMID: 19116138

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Database Links

HGNC: 7661

OMIM: 233710

KEGG: hsa:4688

STRING: 9606.ENSP00000356505

UniGene: Hs.587558

Involvement In Disease
Granulomatous disease, chronic, cytochrome-b-positive 2, autosomal recessive (CGD2)
Protein Families
NCF2/NOXA1 family
Subcellular Location
Cytoplasm.

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