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  2. Receptor (biochemistry) - Wikipedia

    en.wikipedia.org/wiki/Receptor_(biochemistry)

    Receptors of a particular type are linked to specific cellular biochemical pathways that correspond to the signal. While numerous receptors are found in most cells, each receptor will only bind with ligands of a particular structure. This has been analogously compared to how locks will only accept specifically shaped keys. When a ligand binds ...

  3. Cell signaling - Wikipedia

    en.wikipedia.org/wiki/Cell_signaling

    Enzyme-linked receptors (or catalytic receptors) are transmembrane receptors that, upon activation by an extracellular ligand, causes enzymatic activity on the intracellular side. [33] Hence a catalytic receptor is an integral membrane protein possessing both enzymatic, catalytic, and receptor functions. [34]

  4. Cell surface receptor - Wikipedia

    en.wikipedia.org/wiki/Cell_surface_receptor

    Membrane receptors are mainly divided by structure and function into 3 classes: The ion channel linked receptor; The enzyme-linked receptor; and The G protein-coupled receptor. Ion channel linked receptors have ion channels for anions and cations, and constitute a large family of multipass transmembrane proteins.

  5. Signal transduction - Wikipedia

    en.wikipedia.org/wiki/Signal_transduction

    Signal transduction is the process by which a chemical or physical signal is transmitted through a cell as a series of molecular events.Proteins responsible for detecting stimuli are generally termed receptors, although in some cases the term sensor is used. [1]

  6. Biochemical cascade - Wikipedia

    en.wikipedia.org/wiki/Biochemical_cascade

    These receptors may have intrinsic catalytic activity or may be coupled to effector enzymes, or may also be associated to ionic channels. Therefore, there are four main transmembrane receptor types: G protein coupled receptors (GPCRs), tyrosine kinase receptors (RTKs), serine/threonine kinase receptors (RSTKs), and ligand-gated ion channels ...

  7. Hill equation (biochemistry) - Wikipedia

    en.wikipedia.org/wiki/Hill_equation_(biochemistry)

    The Gaddum equation is derived similarly to the Hill-equation but with 2 equilibria: both the ligand with the receptor and the antagonist with the receptor. Hence, the Gaddum equation has 2 constants: the equilibrium constants of the ligand and that of the antagonist

  8. Vitamin A receptor - Wikipedia

    en.wikipedia.org/wiki/Vitamin_A_receptor

    Vitamin A receptor, Stimulated by retinoic acid 6 or STRA6 protein was originally discovered as a transmembrane cell-surface receptor for retinol-binding protein. [1] [2] [3] STRA6 is unique as it functions both as a membrane transporter and a cell surface receptor, particularly as a cytokine receptor. In fact, STRA6 may be the first of a whole ...

  9. Hormone receptor - Wikipedia

    en.wikipedia.org/wiki/Hormone_receptor

    A hormone receptor is a receptor molecule that binds to a specific hormone. Hormone receptors are a wide family of proteins made up of receptors for thyroid and steroid hormones, retinoids and Vitamin D, and a variety of other receptors for various ligands, such as fatty acids and prostaglandins. [1] Hormone receptors are of mainly two classes.

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