GO:0097160 polychlorinated biphenyl binding: Mechanism, Genes and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0097160 (polychlorinated biphenyl binding) is a molecular_function term defined as binding to a polychlorinated biphenyl (PCB), a biphenyl compound containing between 2 and 10 chlorine atoms attached to the two benzene rings.
• PCB binding is experimentally measurable: monoclonal antibodies can selectively bind individual PCB congeners, as shown by kinetic exclusion fluorescence immunoassay.
• Hydroxylated PCB metabolites bind the bovine calf uterine estrogen receptor with structure-dependent affinities, linking PCB binding to endocrine disruption; this finding was later clarified in a published comment and response.
• PCB mixtures and DDT analogs displace 17beta-estradiol from the rat uterine receptor, providing early evidence that PCB binding interferes with hormone-receptor interactions.
• Coplanar PCBs such as 3,4,5,3',4'-pentachlorobiphenyl induce a 54-kDa rat liver protein homologous to mouse selenium binding protein, showing that PCB exposure alters specific binding-protein expression.
• PCB quinone metabolites exert redox activity that promotes atherosclerosis via CAV1 phosphorylation, and prenatal PCB exposure has been linked to cord blood hormones and birth weight in epidemiologic studies.
Description
GO:0097160, polychlorinated biphenyl binding, is a Gene Ontology molecular_function term describing the selective non-covalent interaction of a protein or other macromolecule with a polychlorinated biphenyl (PCB), a biphenyl compound carrying between 2 and 10 chlorine atoms on its two benzene rings. PCBs are persistent environmental contaminants whose biological effects depend on which congener is bound and by which receptor or carrier protein. Because PCB binding underlies both toxicokinetics and endocrine disruption, the term is central to toxicology, environmental health, and receptor pharmacology.
polychlorinated biphenyl binding At A Glance
| GO ID | GO:0097160 |
|---|---|
| GO term | polychlorinated biphenyl binding |
| Ontology | molecular_function |
| Synonym | PCB binding; polychlorobiphenyl binding |
| Major function | Binding to a polychlorinated biphenyl (PCB), a biphenyl compound containing between 2 and 10 chlorine atoms attached to the two benzene rings |
| Definition source | QuickGO |
| Example binders | Anti-PCB monoclonal antibodies; bovine calf uterine estrogen receptor; rat uterine estrogen receptor |
| Related ligands | PCB congeners, hydroxylated PCB metabolites, PCB quinones |
| Disease relevance | Endocrine disruption, atherosclerosis, developmental exposure effects |
What Is GO:0097160?
In plain terms, GO:0097160 describes the ability of a molecule to bind a PCB. The QuickGO definition states: binding to a polychlorinated biphenyl (PCB), a biphenyl compound containing between 2 and 10 chlorine atoms attached to the two benzene rings. Synonyms include PCB binding and polychlorobiphenyl binding. The term is a molecular_function, meaning it describes what a gene product does at the molecular level rather than a whole pathway or cellular location.
Why Is polychlorinated biphenyl binding Important in Cell Biology?
PCB binding is important because it determines how PCBs are recognized by antibodies, receptors, and carrier proteins, and therefore how they exert toxicity. Selective congener binding by monoclonal antibodies provides the basis for immunoassays that detect PCBs in environmental and biological samples. Binding of hydroxylated PCB metabolites to the estrogen receptor links PCB exposure to endocrine disruption, while displacement of estradiol from the rat uterine receptor by PCB mixtures demonstrates direct interference with hormone-receptor binding. Coplanar PCBs also induce specific binding proteins such as a 54-kDa rat liver protein homologous to mouse selenium binding protein, and PCB quinone metabolites drive pro-atherosclerotic signaling through CAV1 phosphorylation. Epidemiologic evidence further connects prenatal PCB exposure to cord blood hormones and birth weight.
• Provides the molecular basis for immunoassays that detect PCBs via congener-selective monoclonal antibodies.
• Explains endocrine disruption through binding of hydroxylated PCB metabolites to the estrogen receptor.
• Links PCB mixtures to direct displacement of 17beta-estradiol from the rat uterine receptor.
• Connects coplanar PCB exposure to induction of a 54-kDa selenium-binding-protein homolog in rat liver.
• Underlies pro-atherosclerotic effects of PCB quinone metabolites via CAV1 phosphorylation.
• Supports epidemiologic studies of prenatal PCB mixtures, cord blood hormones, and birth weight.
• Guides structure-binding relationship studies that rank congener potency.
• Informs risk assessment of persistent organic pollutants in human populations.
Molecular Mechanism of polychlorinated biphenyl binding
Congener recognition by antibodies
In simple terms: Antibodies can tell different PCBs apart based on their chlorine pattern.
Monoclonal antibodies selectively bind individual PCB congeners, and this selectivity can be quantified by kinetic exclusion fluorescence immunoassay. The assay measures the free antibody concentration after equilibrium with PCB, revealing congener-dependent binding affinities.
Binding to estrogen receptor
In simple terms: Some PCB metabolites can occupy the estrogen receptor and mimic or block estrogen.
Hydroxylated PCB metabolites and related substances bind the bovine calf uterine estrogen receptor with structure-dependent affinities, establishing structure-binding relationships for these ligands. A published comment and the authors' response further discuss the interpretation of these binding data.
Displacement of estradiol from uterine receptor
In simple terms: PCB mixtures can push estradiol out of its receptor in the rat uterus.
PCB mixtures and DDT analogs inhibit 17beta-(3H)estradiol binding to the rat uterine receptor, showing that PCB binding competes directly with the natural hormone.
Induction of PCB-binding proteins
In simple terms: PCB exposure can make liver cells produce new proteins that bind PCBs or related ligands.
A coplanar PCB, 3,4,5,3',4'-pentachlorobiphenyl, significantly induces a 54-kDa protein in rat liver that aligns homologously to mouse selenium binding protein, indicating that PCB exposure regulates expression of a binding protein.
Redox-active PCB quinone metabolites
In simple terms: Oxidized PCB metabolites can generate oxidative signals that affect blood vessel cells.
The redox activity of a polychlorinated biphenyl quinone metabolite orchestrates its pro-atherosclerosis effect via CAV1 phosphorylation, linking PCB metabolite chemistry to vascular signaling.
Key Genes Involved in GO:0097160 polychlorinated biphenyl binding
The following genes and proteins have been experimentally linked to polychlorinated biphenyl binding or to PCB-responsive binding events.
| Gene | Major Role | Research Relevance |
|---|---|---|
| ESR1 | Estrogen receptor alpha; binds hydroxylated PCB metabolites and estradiol | Structure-binding studies of PCB metabolites to uterine estrogen receptor |
| ESR2 | Estrogen receptor beta; potential PCB metabolite target | Comparative receptor binding studies |
| SELENBP1 | Selenium binding protein; homolog induced by coplanar PCB in rat liver | PCB-induced 54-kDa protein in rat liver |
| CAV1 | Caveolin-1; phosphorylated in response to PCB quinone metabolite | Pro-atherosclerosis signaling by PCB quinone |
| Ig heavy/light chain loci | Monoclonal antibody variable regions that bind PCB congeners | Congener-selective immunoassay development |
| AHR | Aryl hydrocarbon receptor; canonical mediator of coplanar PCB effects | Coplanar PCB responses including 54-kDa protein induction |
| CYP1A1 | Cytochrome P450 1A1; induced by coplanar PCBs | PCB exposure biomarker |
| CYP1B1 | Cytochrome P450 1B1; PCB-inducible | PCB metabolism and metabolite formation |
| UGT1A | UDP-glucuronosyltransferase; conjugates hydroxylated PCBs | PCB metabolite disposition |
| SULT1A | Sulfotransferase; conjugates hydroxylated PCBs | PCB metabolite disposition |
| ABCB1 | P-glycoprotein; transporter of xenobiotics including PCBs | PCB efflux and toxicokinetics |
| ABCC1 | Multidrug resistance protein; PCB conjugate transport | PCB metabolite efflux |
| NR1I2 | PXR; xenobiotic sensor induced by PCBs | PCB-induced gene regulation |
| NR1I3 | CAR; xenobiotic sensor induced by PCBs | PCB-induced gene regulation |
| KEAP1 | Oxidative stress sensor; PCB quinone redox signaling | PCB quinone pro-atherosclerosis |
| NFE2L2 | Nrf2; antioxidant response to PCB quinones | PCB quinone redox signaling |
| TP53 | Tumor suppressor; PCB-induced stress response | PCB exposure and cellular stress |
| INS | Insulin; endocrine axis affected by prenatal PCB exposure | Cord blood hormone and birth weight studies |
How Is polychlorinated biphenyl binding Regulated?
PCB binding activity is regulated at multiple levels. Expression of binding proteins such as the 54-kDa selenium-binding-protein homolog is induced by coplanar PCBs in rat liver. Receptor availability, for example estrogen receptor levels in uterine tissue, determines how much hydroxylated PCB metabolite can bind. Metabolism of PCBs to hydroxylated and quinone metabolites changes the ligand pool available for binding and can generate redox-active species that modify signaling proteins such as CAV1. Prenatal exposure to chemical mixtures including PCBs has been associated with altered cord blood hormones, indicating that endocrine regulation is influenced by PCB burden.
polychlorinated biphenyl binding and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| ESR1 | Endocrine disruption; estrogen receptor binding by hydroxylated PCB metabolites | Reporter assay with ESR1 knockout and point-mutant receptors |
| CAV1 | Atherosclerosis; PCB quinone-induced CAV1 phosphorylation | Endothelial cell CAV1 phospho-mutant knock-in |
| SELENBP1 | Hepatic response to coplanar PCB exposure | Rat or mouse liver SELENBP1 knockout |
| AHR | Xenobiotic response to coplanar PCBs | AHR knockout hepatocyte model |
| INS | Birth weight and cord blood hormone associations with prenatal PCB exposure | Islet cell overexpression of PCB-responsive genes |
Endocrine disruption and reproductive health
Hydroxylated PCB metabolites bind the bovine calf uterine estrogen receptor with structure-dependent affinities, providing a molecular mechanism for endocrine disruption. PCB mixtures and DDT analogs displace 17beta-estradiol from the rat uterine receptor, further supporting direct interference with estrogen signaling. The interpretation of these receptor-binding findings has been discussed in a comment and response.
Atherosclerosis and cardiovascular risk
The redox activity of a polychlorinated biphenyl quinone metabolite orchestrates its pro-atherosclerosis effect via CAV1 phosphorylation, linking PCB metabolite binding and chemistry to vascular disease mechanisms.
Developmental exposure and birth outcomes
An epidemiologic study examined the link between prenatal exposure to a chemical mixture, cord blood hormones, and birth weight, providing human evidence relevant to PCB exposure during development.
Hepatic protein induction and xenobiotic response
Coplanar PCB 3,4,5,3',4'-pentachlorobiphenyl significantly induces a 54-kDa rat liver protein homologous to mouse selenium binding protein, indicating that PCB exposure triggers hepatic binding-protein responses.
From polychlorinated biphenyl binding-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does ESR1 mediate hydroxylated PCB metabolite binding? | ESR1 knockout and point-mutation cell lines |
| Does CAV1 phosphorylation mediate PCB quinone pro-atherosclerotic signaling? | CAV1 phospho-mutant knock-in endothelial cells |
| Is SELENBP1 required for the 54-kDa PCB-induced hepatic response? | SELENBP1 knockout rat or mouse liver |
| Can a monoclonal antibody selectively bind a specific PCB congener? | Recombinant antibody expression and kinetic exclusion fluorescence immunoassay |
| Does AHR mediate coplanar PCB-induced gene expression? | AHR knockout hepatocyte lines |
| Does prenatal PCB exposure alter hormone-responsive gene expression? | Knock-in reporter models for hormone-responsive promoters |
How to Study the polychlorinated biphenyl binding Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Kinetic exclusion fluorescence immunoassay | Free antibody concentration after PCB equilibrium | Congener-selective monoclonal antibody characterization |
| Competitive radioligand binding | Displacement of 17beta-(3H)estradiol from receptor | PCB mixture and DDT analog effects on uterine receptor |
| Structure-binding relationship analysis | Affinity of hydroxylated PCB metabolites for estrogen receptor | Bovine calf uterine estrogen receptor studies |
| SDS-PAGE and homology alignment | Induction of 54-kDa PCB-responsive protein | Rat liver coplanar PCB exposure |
| Phospho-specific immunoblotting | CAV1 phosphorylation | PCB quinone pro-atherosclerosis signaling |
| Epidemiologic mixture modeling | Association of prenatal PCB exposure with cord blood hormones and birth weight | Human birth cohort studies |
| Reporter gene assay | Transcriptional activity of PCB-activated receptors | AHR and ESR1 pathway studies |
| CRISPR knockout screening | Causal genes required for PCB binding or response | Functional genomics of PCB-binding proteins |
Kinetic exclusion fluorescence immunoassay
Kinetic exclusion fluorescence immunoassay measures the free antibody concentration after equilibrium with PCB, enabling quantitative analysis of selective binding of PCB congeners by monoclonal antibodies.
Receptor binding assays
Competitive radioligand binding assays using 17beta-(3H)estradiol measure displacement by PCB mixtures and DDT analogs from the rat uterine receptor. Similar structure-binding relationship studies use bovine calf uterine estrogen receptor with hydroxylated PCB metabolites.
Protein induction and proteomics
Coplanar PCB exposure induces a 54-kDa rat liver protein that can be detected by gel electrophoresis and identified by homology alignment to mouse selenium binding protein.
Redox and phosphorylation signaling assays
PCB quinone metabolite redox activity and downstream CAV1 phosphorylation can be measured by redox probes and phospho-specific immunoblotting in vascular cells.
How CRISPR Can Be Used to Study GO:0097160 polychlorinated biphenyl binding
Knockout
CRISPR knockout of candidate receptors such as ESR1 or AHR can test whether PCB binding and downstream responses require the encoded protein. Knockout of SELENBP1 can test the role of the 54-kDa PCB-induced protein in hepatic responses.
Point Mutation
Point mutations in the ligand-binding domain of ESR1 can dissect which residues are required for hydroxylated PCB metabolite binding. Phospho-site mutations in CAV1 can test whether specific phosphorylation events mediate PCB quinone pro-atherosclerotic signaling.
Knock-in
Knock-in of tagged or reporter alleles at PCB-responsive loci allows tracking of binding-protein expression after PCB exposure. Knock-in of humanized receptor alleles can model species differences in PCB binding.
Overexpression
Overexpression of candidate PCB-binding proteins such as monoclonal antibody chains or SELENBP1 enables biochemical binding assays and immunoassay development. Overexpression of CAV1 variants can amplify PCB quinone signaling readouts.
How EDITGENE Supports polychlorinated biphenyl binding Research
Researchers studying polychlorinated biphenyl binding-related genes often need to determine whether a candidate gene is causally involved in PCB recognition, receptor occupancy, or downstream toxicity. EDITGENE provides publication-ready CRISPR models and screening services to test these hypotheses directly.
Contact EDITGENE today to design your custom CRISPR model for polychlorinated biphenyl binding research.
Frequently Asked Questions About polychlorinated biphenyl binding
What is GO:0097160 polychlorinated biphenyl binding?
GO:0097160 is a Gene Ontology molecular_function term defined as binding to a polychlorinated biphenyl (PCB), a biphenyl compound containing between 2 and 10 chlorine atoms attached to the two benzene rings.
What is polychlorinated biphenyl binding in simple terms?
It means a protein or antibody sticks to a PCB molecule, and this interaction can trigger biological effects or be used for detection.
What genes are involved in polychlorinated biphenyl binding?
Genes and proteins studied in this context include ESR1, ESR2, SELENBP1, CAV1, AHR, and cytochrome P450 enzymes such as CYP1A1.
How is PCB binding measured experimentally?
Kinetic exclusion fluorescence immunoassay can measure selective binding of PCB congeners by monoclonal antibodies, and competitive radioligand binding assays measure displacement of estradiol from the uterine receptor.
Do PCBs bind the estrogen receptor?
Yes, hydroxylated PCB metabolites bind the bovine calf uterine estrogen receptor with structure-dependent affinities, and PCB mixtures displace 17beta-estradiol from the rat uterine receptor.
What is the link between PCB binding and atherosclerosis?
A polychlorinated biphenyl quinone metabolite exerts redox activity that promotes atherosclerosis via CAV1 phosphorylation.
Which PCB congener induces a 54-kDa liver protein?
The coplanar PCB 3,4,5,3',4'-pentachlorobiphenyl significantly induces a 54-kDa rat liver protein homologous to mouse selenium binding protein.
Is prenatal PCB exposure linked to birth weight?
An epidemiologic study examined the link between prenatal exposure to a chemical mixture, cord blood hormones, and birth weight.
What model systems are used to study PCB binding?
Monoclonal antibodies, bovine calf uterine estrogen receptor preparations, rat uterine receptor assays, and rat liver protein induction models have all been used.
How can CRISPR help study polychlorinated biphenyl binding?
CRISPR knockout, point mutation, knock-in, and overexpression models can test whether specific genes such as ESR1, CAV1, or SELENBP1 are required for PCB binding and downstream effects.
Conclusion
GO:0097160 polychlorinated biphenyl binding captures a molecular function with direct experimental support across immunoassay, receptor pharmacology, and toxicology. Selective congener binding by monoclonal antibodies, structure-dependent binding of hydroxylated metabolites to the estrogen receptor, displacement of estradiol from the uterine receptor, induction of a 54-kDa selenium-binding-protein homolog, and redox-driven CAV1 phosphorylation by a PCB quinone together define the mechanistic landscape. Human epidemiologic evidence further links prenatal PCB exposure to cord blood hormones and birth weight. CRISPR-based models of the genes involved will help clarify causality and support safer risk assessment.
References
- 1. Chiu YW et al.. 2001. Selective binding of polychlorinated biphenyl congeners by a monoclonal antibody: analysis by kinetic exclusion fluorescence immunoassay.. Anal Chem 73(22):5477-84 PMID: 11816577
- 2. Rayne S. 2013. Comment on "specific binding of hydroxylated polychlorinated biphenyl metabolites and other substances to bovine calf uterine estrogen receptor: structure-binding relationships [Kramer and Giesy, Sci Total Environ 1999;233:141-61]".. Sci Total Environ 454-455:181-3 PMID: 23542671
- 3. Ishii Y et al.. 1996. Significant induction of a 54-kDa protein in rat liver with homologous alignment to mouse selenium binding protein by a coplanar polychlorinated biphenyl, 3,4,5,3',4'-pentachlorobiphenyl and 3-methylcholanthrene.. Toxicol Lett 87(1):1-9 PMID: 8701438
- 4. Kramer VJ et al.. 2014. Response to "Comment on Specific binding of hydroxylated polychlorinated biphenyl metabolites and other substances to bovine calf uterine estrogen receptor: structure-binding relationships [Kramer and Giesy, Sci Total Environ 1999;233:141-61]".. Sci Total Environ 466-467:1112-3 PMID: 24034984
- 5. Kramer VJ et al.. 1999. Specific binding of hydroxylated polychlorinated biphenyl metabolites and other substances to bovine calf uterine estrogen receptor: structure-binding relationships.. Sci Total Environ 233(1-3):141-61 PMID: 10492903
- 6. Govarts E et al.. 2025. The link between prenatal exposure to a chemical mixture, cord blood hormones, and birth weight: an epidemiologic study.. Environ Int 202:109700 PMID: 40795487
- 7. Yang B et al.. 2023. The redox activity of polychlorinated biphenyl quinone metabolite orchestrates its pro-atherosclerosis effect via CAV1 phosphorylation.. J Hazard Mater 457:131697 PMID: 37257380
- 8. Nelson JA. 1974. Effects of dichlorodiphenyltrichloroethane (DDT) analogs and polychlorinated biphenyl (PCB) mixtures on 17beta-(3H)estradiol binding to rat uterine receptor.. Biochem Pharmacol 23(2):447-51 PMID: 4360348
