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  2. Downregulation and upregulation - Wikipedia

    en.wikipedia.org/wiki/Downregulation_and_up...

    The disequilibrium caused by these changes often causes withdrawal when the long-term use of a drug is discontinued. Upregulation and downregulation can also happen as a response to toxins or hormones. An example of upregulation in pregnancy is hormones that cause cells in the uterus to become more sensitive to oxytocin.

  3. Unfolded protein response - Wikipedia

    en.wikipedia.org/wiki/Unfolded_protein_response

    The term protein folding incorporates all the processes involved in the production of a protein after the nascent polypeptides have become synthesized by the ribosomes.The proteins destined to be secreted or sorted to other cell organelles carry an N-terminal signal sequence that will interact with a signal recognition particle (SRP).

  4. RANK - Wikipedia

    en.wikipedia.org/wiki/RANK

    RANK is the receptor for RANK-Ligand and part of the RANK/RANKL/OPG signaling pathway that regulates osteoclast differentiation and activation. It is associated with bone remodeling and repair, immune cell function, lymph node development, thermal regulation, and mammary gland development.

  5. Regulation of gene expression - Wikipedia

    en.wikipedia.org/wiki/Regulation_of_gene_expression

    Up-regulation is a process which occurs within a cell triggered by a signal (originating internal or external to the cell), which results in increased expression of one or more genes and as a result the proteins encoded by those genes. Conversely, down-regulation is a process resulting in decreased gene and corresponding protein expression.

  6. Biochemical cascade - Wikipedia

    en.wikipedia.org/wiki/Biochemical_cascade

    The basic unit of the Reactome database is a reaction; reactions are then grouped into causal chains to form pathways [115] The Reactome data model allows us to represent many diverse processes in the human system, including the pathways of intermediary metabolism, regulatory pathways, and signal transduction, and high-level processes, such as ...

  7. NF-κB - Wikipedia

    en.wikipedia.org/wiki/NF-κB

    Osteoprotegerin (OPG), which is a decoy receptor homolog for RANK ligand , inhibits RANK by binding to RANKL, and, thus, osteoprotegerin is tightly involved in regulating NF-κB activation. [ 28 ] Many bacterial products and stimulation of a wide variety of cell-surface receptors lead to NF-κB activation and fairly rapid changes in gene ...

  8. Erythropoietin receptor - Wikipedia

    en.wikipedia.org/wiki/Erythropoietin_receptor

    13857 Ensembl ENSG00000187266 ENSMUSG00000006235 UniProt P19235 P14753 RefSeq (mRNA) NM_000121 NM_010149 RefSeq (protein) NP_000112 NP_034279 Location (UCSC) Chr 19: 11.38 – 11.38 Mb Chr 9: 21.87 – 21.87 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse The erythropoietin receptor (EpoR) is a protein that in humans is encoded by the EPOR gene. EpoR is a 52 kDa peptide with a single ...

  9. Muscarinic acetylcholine receptor M2 - Wikipedia

    en.wikipedia.org/wiki/Muscarinic_acetylcholine...

    [13] [14] In the heart, this contributes to a decreased heart rate. They do so by the G βγ subunit of the G protein; G βγ shifts the open probability of K + channels in the membrane of the cardiac pacemaker cells, which causes an outward current of potassium, effectively hyperpolarizing the membrane, which slows down the heart rate.