Basic Info

Common Name2,3,3',4,4',5-Hexachlorobiphenyl(F03704)
2D Structure
Description

2,3,3',4,4',5-Hexachlorobiphenyl is one of 209 polychlorinated biphenyls (PCBs). PCBs are a group of synthetic organic compounds with 1-10 chlorine atoms attached to biphenyl. They were manufactured as commercial mixtures but banned in the 1970's because they were found to bioaccumulate and cause harmful health effects. However, PCBs do not break down readily and are still found in the environment. (L4)

FRCD IDF03704
CAS Number38380-08-4
PubChem CID38019
FormulaC12H4Cl6
IUPAC Name

1,2,3,4-tetrachloro-5-(3,4-dichlorophenyl)benzene

InChI Key

LCXMEXLGMKFLQO-UHFFFAOYSA-N

InChI

InChI=1S/C12H4Cl6/c13-7-2-1-5(3-8(7)14)6-4-9(15)11(17)12(18)10(6)16/h1-4H

Canonical SMILES

C1=CC(=C(C=C1C2=CC(=C(C(=C2Cl)Cl)Cl)Cl)Cl)Cl

Isomeric SMILES

C1=CC(=C(C=C1C2=CC(=C(C(=C2Cl)Cl)Cl)Cl)Cl)Cl

Synonyms
        
            1,1'-Biphenyl, 2,3,3',4,4',5-hexachloro-
        
            2,3,3',4,4',5-HEXACHLOROBIPHENYL
        
            38380-08-4
        
            PCB 156
        
            2,3,4,5,3',4'-Hexachlorobiphenyl
        
            UNII-4D6049M2OC
        
            3,4,2',3',4',5'-Hexachlorobiphenyl
        
            PCB No 156 solution
        
            2,3,3',4,4',5-Hexachloro-1,1'-biphenyl
        
            CB 156
        
Classifies
                

                  
                    Illegal Additives
                  
                    Pollutant
                  

                
        
Update DateNov 13, 2018 17:07

Chemical Taxonomy

KingdomOrganic compounds
SuperclassBenzenoids
ClassBenzene and substituted derivatives
SubclassBiphenyls and derivatives
Intermediate Tree NodesChlorinated biphenyls
Direct ParentPolychlorinated biphenyls
Alternative Parents
Molecular FrameworkAromatic homomonocyclic compounds
SubstituentsPolychlorinated biphenyl - 1,2-dichlorobenzene - Halobenzene - Chlorobenzene - Aryl halide - Aryl chloride - Hydrocarbon derivative - Organochloride - Organohalogen compound - Aromatic homomonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as polychlorinated biphenyls. These are organic compounds containing at least two chlorine atoms attached to either benzene ring of the biphenyl moiety.

Properties

Property NameProperty Value
Molecular Weight360.864
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count0
Rotatable Bond Count1
Complexity286
Monoisotopic Mass357.844
Exact Mass359.841
XLogP7.6
Formal Charge0
Heavy Atom Count18
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Isotope Atom Count0
Covalently-Bonded Unit Count1

ADMET

Model Result Probability
Absorption
Blood-Brain BarrierBBB+0.9891
Human Intestinal AbsorptionHIA+1.0000
Caco-2 PermeabilityCaco2+0.8639
P-glycoprotein SubstrateNon-substrate0.8147
P-glycoprotein InhibitorNon-inhibitor0.8786
Non-inhibitor0.9683
Renal Organic Cation TransporterNon-inhibitor0.8266
Distribution
Subcellular localizationMitochondria0.8869
Metabolism
CYP450 2C9 SubstrateNon-substrate0.7864
CYP450 2D6 SubstrateNon-substrate0.8237
CYP450 3A4 SubstrateNon-substrate0.6835
CYP450 1A2 InhibitorInhibitor0.9474
CYP450 2C9 InhibitorInhibitor0.7594
CYP450 2D6 InhibitorNon-inhibitor0.9473
CYP450 2C19 InhibitorInhibitor0.8619
CYP450 3A4 InhibitorNon-inhibitor0.9253
CYP Inhibitory PromiscuityHigh CYP Inhibitory Promiscuity0.8200
Excretion
Toxicity
Human Ether-a-go-go-Related Gene InhibitionWeak inhibitor0.9499
Non-inhibitor0.8371
AMES ToxicityNon AMES toxic0.9594
CarcinogensNon-carcinogens0.5226
Fish ToxicityHigh FHMT0.9937
Tetrahymena Pyriformis ToxicityHigh TPT0.9996
Honey Bee ToxicityHigh HBT0.6475
BiodegradationNot ready biodegradable0.9727
Acute Oral ToxicityIII0.8273
Carcinogenicity (Three-class)Non-required0.6630

Model Value Unit
Absorption
Aqueous solubility-7.3272LogS
Caco-2 Permeability2.0325LogPapp, cm/s
Distribution
Metabolism
Excretion
Toxicity
Rat Acute Toxicity1.7831LD50, mol/kg
Fish Toxicity-0.3132pLC50, mg/L
Tetrahymena Pyriformis Toxicity1.8338pIGC50, ug/L

References

TitleJournalDatePubmed ID
PCBs, PCDD/Fs, and PBDEs in blood samples of a rural population in South Germany.Int J Hyg Environ Health2015 Jan25127490
Relative potency based on hepatic enzyme induction predicts immunosuppressive effects of a mixture of PCDDS/PCDFS and PCBS.Toxicol Appl Pharmacol2008 Mar 1518190939

Targets

General Function:
Zinc ion binding
Specific Function:
Nuclear hormone receptor. Binds estrogens with an affinity similar to that of ESR1, and activates expression of reporter genes containing estrogen response elements (ERE) in an estrogen-dependent manner (PubMed:20074560). Isoform beta-cx lacks ligand binding ability and has no or only very low ere binding activity resulting in the loss of ligand-dependent transactivation ability. DNA-binding by ESR1 and ESR2 is rapidly lost at 37 degrees Celsius in the absence of ligand while in the presence of 17 beta-estradiol and 4-hydroxy-tamoxifen loss in DNA-binding at elevated temperature is more gradual.
Gene Name:
ESR2
Uniprot ID:
Q92731
Molecular Weight:
59215.765 Da
Mechanism of Action:
Causes endocrine disruption in humans by binding to and inhibiting the estrogen receptor.
References
  1. Taccone-Gallucci M, Manca-di-Villahermosa S, Battistini L, Stuffler RG, Tedesco M, Maccarrone M: N-3 PUFAs reduce oxidative stress in ESRD patients on maintenance HD by inhibiting 5-lipoxygenase activity. Kidney Int. 2006 Apr;69(8):1450-4. [16531984 ]
General Function:
Sulfotransferase activity
Specific Function:
Sulfotransferase that utilizes 3'-phospho-5'-adenylyl sulfate (PAPS) as sulfonate donor to catalyze the sulfate conjugation of estradiol and estrone. May play a role in the regulation of estrogen receptor activity by metabolizing free estradiol. Maximally sulfates beta-estradiol and estrone at concentrations of 20 nM. Also sulfates dehydroepiandrosterone, pregnenolone, ethinylestradiol, equalenin, diethylstilbesterol and 1-naphthol, at significantly higher concentrations; however, cortisol, testosterone and dopamine are not sulfated.
Gene Name:
SULT1E1
Uniprot ID:
P49888
Molecular Weight:
35126.185 Da
Mechanism of Action:
PCBs can cause endocrine disurption by binding to estrogen sulfotransferase, which can stimulate the growth of certain cancer cells and produce other estrogenic effects, such as reproductive dysfunction.
References
  1. Aoki Y: Polychlorinated biphenyls, polychlorinated dibenzo-p-dioxins, and polychlorinated dibenzofurans as endocrine disrupters--what we have learned from Yusho disease. Environ Res. 2001 May;86(1):2-11. [11386736 ]
General Function:
Pyridoxal phosphate binding
Specific Function:
Catalyzes the decarboxylation of L-3,4-dihydroxyphenylalanine (DOPA) to dopamine, L-5-hydroxytryptophan to serotonin and L-tryptophan to tryptamine.
Gene Name:
DDC
Uniprot ID:
P20711
Molecular Weight:
53925.815 Da
Mechanism of Action:
PCB inhibition of aromatic-L-amino-acid decarboxylase is believed to cause decreased dopamine synthesis.
References
  1. ATSDR - Agency for Toxic Substances and Disease Registry (2000). Toxicological profile for polychlorinated biphenyls. U.S. Public Health Service in collaboration with U.S. Environmental Protection Agency (EPA). : http://www.atsdr.cdc.gov/toxprofiles/tp17.html
General Function:
Rna polymerase ii carboxy-terminal domain kinase activity
Specific Function:
Serine/threonine kinase which acts as an essential component of the MAP kinase signal transduction pathway. MAPK1/ERK2 and MAPK3/ERK1 are the 2 MAPKs which play an important role in the MAPK/ERK cascade. They participate also in a signaling cascade initiated by activated KIT and KITLG/SCF. Depending on the cellular context, the MAPK/ERK cascade mediates diverse biological functions such as cell growth, adhesion, survival and differentiation through the regulation of transcription, translation, cytoskeletal rearrangements. The MAPK/ERK cascade plays also a role in initiation and regulation of meiosis, mitosis, and postmitotic functions in differentiated cells by phosphorylating a number of transcription factors. About 160 substrates have already been discovered for ERKs. Many of these substrates are localized in the nucleus, and seem to participate in the regulation of transcription upon stimulation. However, other substrates are found in the cytosol as well as in other cellular organelles, and those are responsible for processes such as translation, mitosis and apoptosis. Moreover, the MAPK/ERK cascade is also involved in the regulation of the endosomal dynamics, including lysosome processing and endosome cycling through the perinuclear recycling compartment (PNRC); as well as in the fragmentation of the Golgi apparatus during mitosis. The substrates include transcription factors (such as ATF2, BCL6, ELK1, ERF, FOS, HSF4 or SPZ1), cytoskeletal elements (such as CANX, CTTN, GJA1, MAP2, MAPT, PXN, SORBS3 or STMN1), regulators of apoptosis (such as BAD, BTG2, CASP9, DAPK1, IER3, MCL1 or PPARG), regulators of translation (such as EIF4EBP1) and a variety of other signaling-related molecules (like ARHGEF2, DCC, FRS2 or GRB10). Protein kinases (such as RAF1, RPS6KA1/RSK1, RPS6KA3/RSK2, RPS6KA2/RSK3, RPS6KA6/RSK4, SYK, MKNK1/MNK1, MKNK2/MNK2, RPS6KA5/MSK1, RPS6KA4/MSK2, MAPKAPK3 or MAPKAPK5) and phosphatases (such as DUSP1, DUSP4, DUSP6 or DUSP16) are other substrates which enable the propagation the MAPK/ERK signal to additional cytosolic and nuclear targets, thereby extending the specificity of the cascade. Mediates phosphorylation of TPR in respons to EGF stimulation. May play a role in the spindle assembly checkpoint. Phosphorylates PML and promotes its interaction with PIN1, leading to PML degradation.Acts as a transcriptional repressor. Binds to a [GC]AAA[GC] consensus sequence. Repress the expression of interferon gamma-induced genes. Seems to bind to the promoter of CCL5, DMP1, IFIH1, IFITM1, IRF7, IRF9, LAMP3, OAS1, OAS2, OAS3 and STAT1. Transcriptional activity is independent of kinase activity.
Gene Name:
MAPK1
Uniprot ID:
P28482
Molecular Weight:
41389.265 Da
References
  1. Tavolari S, Bucci L, Tomasi V, Guarnieri T: Selected polychlorobiphenyls congeners bind to estrogen receptor alpha in human umbilical vascular endothelial (HUVE) cells modulating angiogenesis. Toxicology. 2006 Jan 20;218(1):67-74. Epub 2005 Nov 15. [16293362 ]
General Function:
Phosphatase binding
Specific Function:
Serine/threonine kinase which acts as an essential component of the MAP kinase signal transduction pathway. MAPK1/ERK2 and MAPK3/ERK1 are the 2 MAPKs which play an important role in the MAPK/ERK cascade. They participate also in a signaling cascade initiated by activated KIT and KITLG/SCF. Depending on the cellular context, the MAPK/ERK cascade mediates diverse biological functions such as cell growth, adhesion, survival and differentiation through the regulation of transcription, translation, cytoskeletal rearrangements. The MAPK/ERK cascade plays also a role in initiation and regulation of meiosis, mitosis, and postmitotic functions in differentiated cells by phosphorylating a number of transcription factors. About 160 substrates have already been discovered for ERKs. Many of these substrates are localized in the nucleus, and seem to participate in the regulation of transcription upon stimulation. However, other substrates are found in the cytosol as well as in other cellular organelles, and those are responsible for processes such as translation, mitosis and apoptosis. Moreover, the MAPK/ERK cascade is also involved in the regulation of the endosomal dynamics, including lysosome processing and endosome cycling through the perinuclear recycling compartment (PNRC); as well as in the fragmentation of the Golgi apparatus during mitosis. The substrates include transcription factors (such as ATF2, BCL6, ELK1, ERF, FOS, HSF4 or SPZ1), cytoskeletal elements (such as CANX, CTTN, GJA1, MAP2, MAPT, PXN, SORBS3 or STMN1), regulators of apoptosis (such as BAD, BTG2, CASP9, DAPK1, IER3, MCL1 or PPARG), regulators of translation (such as EIF4EBP1) and a variety of other signaling-related molecules (like ARHGEF2, FRS2 or GRB10). Protein kinases (such as RAF1, RPS6KA1/RSK1, RPS6KA3/RSK2, RPS6KA2/RSK3, RPS6KA6/RSK4, SYK, MKNK1/MNK1, MKNK2/MNK2, RPS6KA5/MSK1, RPS6KA4/MSK2, MAPKAPK3 or MAPKAPK5) and phosphatases (such as DUSP1, DUSP4, DUSP6 or DUSP16) are other substrates which enable the propagation the MAPK/ERK signal to additional cytosolic and nuclear targets, thereby extending the specificity of the cascade.
Gene Name:
MAPK3
Uniprot ID:
P27361
Molecular Weight:
43135.16 Da
References
  1. Tavolari S, Bucci L, Tomasi V, Guarnieri T: Selected polychlorobiphenyls congeners bind to estrogen receptor alpha in human umbilical vascular endothelial (HUVE) cells modulating angiogenesis. Toxicology. 2006 Jan 20;218(1):67-74. Epub 2005 Nov 15. [16293362 ]
General Function:
Tyrosine 3-monooxygenase activity
Specific Function:
Plays an important role in the physiology of adrenergic neurons.
Gene Name:
TH
Uniprot ID:
P07101
Molecular Weight:
58599.545 Da
Mechanism of Action:
PCB inhibition of tyrosine 3-monooxygenase is believed to cause decreased dopamine synthesis.
References
  1. ATSDR - Agency for Toxic Substances and Disease Registry (2000). Toxicological profile for polychlorinated biphenyls. U.S. Public Health Service in collaboration with U.S. Environmental Protection Agency (EPA). : http://www.atsdr.cdc.gov/toxprofiles/tp17.html
General Function:
Polychlorinated biphenyl binding
Specific Function:
Binds phosphatidylcholine, phosphatidylinositol, polychlorinated biphenyls (PCB) and weakly progesterone, potent inhibitor of phospholipase A2.
Gene Name:
SCGB1A1
Uniprot ID:
P11684
Molecular Weight:
9993.6 Da
Mechanism of Action:
PCBs will bioaccumulate by binding to receptor proteins such as uteroglobin.
References
  1. Troisi GM, Haraguchi K, Kaydoo DS, Nyman M, Aguilar A, Borrell A, Siebert U, Mason CF: Bioaccumulation of polychlorinated biphenyls (PCBs) and dichlorodiphenylethane (DDE) methyl sulfones in tissues of seal and dolphin morbillivirus epizootic victims. J Toxicol Environ Health A. 2001 Jan 12;62(1):1-8. [11205532 ]
General Function:
Zinc ion binding
Specific Function:
Nuclear hormone receptor. The steroid hormones and their receptors are involved in the regulation of eukaryotic gene expression and affect cellular proliferation and differentiation in target tissues. Ligand-dependent nuclear transactivation involves either direct homodimer binding to a palindromic estrogen response element (ERE) sequence or association with other DNA-binding transcription factors, such as AP-1/c-Jun, c-Fos, ATF-2, Sp1 and Sp3, to mediate ERE-independent signaling. Ligand binding induces a conformational change allowing subsequent or combinatorial association with multiprotein coactivator complexes through LXXLL motifs of their respective components. Mutual transrepression occurs between the estrogen receptor (ER) and NF-kappa-B in a cell-type specific manner. Decreases NF-kappa-B DNA-binding activity and inhibits NF-kappa-B-mediated transcription from the IL6 promoter and displace RELA/p65 and associated coregulators from the promoter. Recruited to the NF-kappa-B response element of the CCL2 and IL8 promoters and can displace CREBBP. Present with NF-kappa-B components RELA/p65 and NFKB1/p50 on ERE sequences. Can also act synergistically with NF-kappa-B to activate transcription involving respective recruitment adjacent response elements; the function involves CREBBP. Can activate the transcriptional activity of TFF1. Also mediates membrane-initiated estrogen signaling involving various kinase cascades. Isoform 3 is involved in activation of NOS3 and endothelial nitric oxide production. Isoforms lacking one or several functional domains are thought to modulate transcriptional activity by competitive ligand or DNA binding and/or heterodimerization with the full length receptor. Essential for MTA1-mediated transcriptional regulation of BRCA1 and BCAS3. Isoform 3 can bind to ERE and inhibit isoform 1.
Gene Name:
ESR1
Uniprot ID:
P03372
Molecular Weight:
66215.45 Da
Mechanism of Action:
Causes endocrine disruption in humans by binding to and inhibiting the estrogen receptor.
References
  1. Taccone-Gallucci M, Manca-di-Villahermosa S, Battistini L, Stuffler RG, Tedesco M, Maccarrone M: N-3 PUFAs reduce oxidative stress in ESRD patients on maintenance HD by inhibiting 5-lipoxygenase activity. Kidney Int. 2006 Apr;69(8):1450-4. [16531984 ]
General Function:
Transcription regulatory region dna binding
Specific Function:
Ligand-activated transcriptional activator. Binds to the XRE promoter region of genes it activates. Activates the expression of multiple phase I and II xenobiotic chemical metabolizing enzyme genes (such as the CYP1A1 gene). Mediates biochemical and toxic effects of halogenated aromatic hydrocarbons. Involved in cell-cycle regulation. Likely to play an important role in the development and maturation of many tissues. Regulates the circadian clock by inhibiting the basal and circadian expression of the core circadian component PER1. Inhibits PER1 by repressing the CLOCK-ARNTL/BMAL1 heterodimer mediated transcriptional activation of PER1.
Gene Name:
AHR
Uniprot ID:
P35869
Molecular Weight:
96146.705 Da
Mechanism of Action:
Dioxin-like PCBs bind to the aryl hydrocarbon receptor, which disrupts cell function by altering the transcription of genes, mainly be inducing the expression of hepatic Phase I and Phase II enzymes, especially of the cytochrome P450 family.
References
  1. Safe S, Bandiera S, Sawyer T, Robertson L, Safe L, Parkinson A, Thomas PE, Ryan DE, Reik LM, Levin W, et al.: PCBs: structure-function relationships and mechanism of action. Environ Health Perspect. 1985 May;60:47-56. [2992927 ]