Verapamil hydrochloride, L-type Ca2+ channel blocker

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

C-Jun also known as a part of the activator protein 1 (AP-1) complex is a transcription factor with a molecular weight of around 39 kDa. It is widely expressed in various tissues playing a critical role in regulating gene expression. The Estrogen Receptor (ER) a nuclear receptor with approximately 66 kDa mass is vital for mediating estrogen's effects primarily in reproductive tissues but also in bone and brain. Gli3 part of the Gli family operates as a transcription factor involved in developmental processes and displays a molecular weight of roughly 190 kDa. Cytochrome P450 3A4 (CYP3A4) serves as an important enzyme in drug metabolism abundantly found in the liver. TDP1 a DNA repair enzyme weighing about 75 kDa functions mainly in the nucleus. The Androgen Receptor (AR) another nuclear receptor around 110 kDa is essential in the signaling of male hormones. PXR or Pregnane X Receptor directs the expression of enzymes involved in xenobiotic metabolism. Estrogen Related Receptor alpha (ERRα) a nuclear receptor not activated by estrogen holds significance in energy metabolism. ROR gamma assigned to the nuclear hormonous receptor family influences immune response regulation. H-ERG encodes a potassium channel important in cardiac electrical activity. ABCB11 or Bile Salt Export Pump (BSEP) primarily executes bile acid transport in the liver.

Biological function summary

C-Jun impacts cell proliferation apoptosis and differentiation often forming heterodimers with c-Fos in the AP-1 complex. ER regulates genes linked to cell proliferation and differentiation important for reproductive system function. Gli3 partakes in the Hedgehog signaling pathway providing key directives during limb development and neural patterning. CYP3A4 influences steroid metabolism and detoxification of chemicals. TDP1 repairs DNA targeting topoisomerase I-induced DNA breaks. AR oversees the regulation of genes in male traits and reproductive activity. PXR orchestrates the response to endogenous and exogenous substances modulating the expression of detoxifying enzymes. ERRα contributes to mitochondrial biogenesis and energy regulation. ROR gamma affects thymocyte development and inflammatory processes. H-ERG regulates cardiac rhythmicity. BSEP transports bile acids ensuring proper liver function.

Pathways

C-Jun integrates into the MAPK signaling pathway functioning alongside proteins like JNK to affect cell fate. ER participates in the estrogen signaling pathway interacting with co-regulators and other receptors such as ERRα to modulate transcription. Gli3 connects the Hedgehog pathway with proteins like Smoothened and Patched influencing tissue patterning. CYP3A4 fits within the xenobiotic metabolism pathway working with PXR and AR to detoxify compounds and metabolic regulation. TDP1 engages in DNA repair pathways collaborating with PARP for efficient genomic maintenance. AR interacts with steroid biosynthesis and signaling pathways closely linked with the ER in hormonal regulation. PXR associates with the pregnane X receptor pathway vital for xenobiotic substance metabolism. ERRα interfaces with the PGC-1α pathway influencing genes involved in oxidative metabolism. ROR gamma participates in the circadian rhythm and immune response pathways with connections to ER. H-ERG ties to cardiac-related pathways including those for calcium signaling. BSEP integrates into the bile acid metabolism pathway interacting with hepatic transport proteins.

Abnormalities in c-Jun expression relate to cancers such as breast and liver cancer showing links with other AP-1 components like c-Fos. ER's involvement in breast cancer is well-documented connecting with other nuclear receptors like AR. Gli3 mutations result in disorders like Pallister-Hall syndrome and Greig cephalopolysyndactyly syndrome implicating interactions with components of the Hedgehog pathway. CYP3A4 variability affects drug responses influencing conditions like liver disease with PXR contributing to its regulatory control. Dysfunction in TDP1 associates with neurodegenerative diseases such as spinocerebellar ataxia where interactions with DNA repair proteins are important. AR mutations link to androgen insensitivity syndrome and prostate cancer related to ER in hormonal signaling. PXR variations affect drug metabolism contributing to liver disorders. ERRα dysregulation impacts metabolic syndromes like diabetes with connections to mitochondrial function. ROR gamma associates with autoimmune diseases with immune pathway ties. H-ERG mutations often result in long QT syndrome affecting calcium and potassium channel regulation. BSEP deficiencies lead to cholestatic liver disease requiring efficient hepatic bile acid transport.