CD1 - CD1d - CD2 - CD3 - CD4 - CD8 - CD11a - CD11b - CD11c - CD14 - CD15 - CD18 - CD19 - CD20 - CD22 - CD23 - CD24 - CD25 - CD26 - CD28 - CD29 - CD30 - CD31 - CD32 - CD33 - CD34 - CD35 - CD36 - CD38 - CD40 - CD43 - CD44 - CD45 - CD46 - CD49a - CD49b - CD49c - CD49d - CD52 - CD54 - CD55 - CD56 - CD59 - CD62E - CD62L - CD62P - CD66e - CD68 - CD70 - CD71 - CD72 - CD79 - CD80 - CD86 - CD88 - CD90 - CD94 - CD95 - CD98 - CD106 - CD117 - CD122 - CD130 - CD132 - CD133 - CD134 - CD141 - CD142 - CD143 - CD146 - CD147 - CD152 - CD153 - CD154 - CD155 - CD164 - CD184 - CD169 - CD206 - CD209 - CD278 Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. ... A representation of the 3D structure of myoglobin, showing coloured alpha helices. ... The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ... CD1 (cluster of differentiation 1) is a family of glycoproteins expressed on the surface of various human antigen-presenting cells. ... CD1d is a member of the CD1 (cluster of differentiation 1) family of glycoproteins expressed on the surface of various human antigen-presenting cells. ... In immunology, the CD3 antigen (CD stands for cluster of differentiation) is a protein complex composed of three distinct chains (CD3γ, CD3δ and CD3ε) in mammals, that associate with molecules known as the T cell receptor (TCR) and the ζ-chain to generate an activation signal in T lymphocytes. ... CD4 (cluster of differentiation 4) is a molecule that is expressed on the surface of T helper cells (as well as regulatory T cells and dendritic cells). ... CD8 (cluster of differentiation 8) is a molecule that is expressed on the surface of cytotoxic T cells. ... Integrin alpha M is a protein involved in the complement system. ... CDC11c is a type I transmembrane protein found at high levels on most human dendritic cells, but also on monocytes, macrophages, neutrophils, and some B cells that induces cellular activation and helps trigger neutrophil respiratory burst; expressed in hairy cell leukemias, acute nonlymphocytic leukemias, and some B-cell chronic lymphocytic... CD14 is a membrane-associated glycosylphosphatidylinositol-linked protein expressed at the surface of cells, especially macrophages. ... CD15 (3-fucosyl-N-acetyl-lactosamine) is a cluster of differentiation - an immunologically significant molecule. ... CD20 is a non-glycosylated phosphoprotein expressed on the surface of all mature B-cells. ... CD23 or Fc epsilon RII is the low affinty receptor for IgE, an antibody isotype involved in allergy and (arguably) resistance to parasites and is important in regulation of IgE levels. ... The Interleukin-2 Receptor (IL-2R) is heterotrimeric protein expressed on the surface of certain immune cells, such as lymphocytes, that binds and responds to a cytokine called interleukin 2. ... Structure of human CD28. ... Cluster of differentiation (CD) molecules are markers on the cell surface, as recognized by specific sets of antibodies, used to identify the cell type, stage of differentiation and activity of a cell. ... CD31 is a cluster of differentiation molecule. ... The CD32 in action The AmigaCD32 was the worlds first 32bit CD_ROM based game console. ... CD34 is a cluster of differentiation molecule present on certain cells within the human body. ... Complement receptor 1 Also known as CR1, CD35, C3b/C4b receptor and immune adherence receptor. ... CD36 CD36 (GP88) is an 88-kDa cell surface single polypeptide chain glycoprotein, preferentially located within lipid rafts, which is found on platelets, erythrocytes, monocytes, differentiated adipocytes, mammary epithelial cells, liver and spleen cells and some skin microdermal endothelial cells. ... CD38 (cluster of differentiation 38) is a glycoprotein found on the surface of many immune cells (white blood cells), including CD4+, CD8+, B and natural killer cells. ... In immunology, the CD45 antigen (CD stands for cluster of differentiation) is a protein which is a leucocyte common antigen, a type I transmembrane protein present on all differentiated hematopoietic cells except erythrocytes that assists in the activation of those cells (a form of co-stimulation). ... CD46 is an inhibitory complement receptor. ... Intercellular adhesion molecules (ICAMs) are molecules that promote adhesion between cells. ... Decay accelerating factor is a protein involved in the complement system. ... Neural Cell Adhesion Molecule (NCAM, also the cluster of differentiation CD56) is a homophilic binding glycoprotein expressed on the surface of neurons, glia and skeletal muscle. ... L-selectin (CD62L) is a cell adhesion molecule found on leukocytes; more precisely, it is a selectin, a molecule specific for carbohydrate groups. ... P-selectin is a cell adhesion molecule (CAM) found in granules in endothelial cells (cells lining blood vessels) and activated platelets. ... Carcinoembryonic antigen (CEA) is a glycoprotein involved in cell adhesion. ... Transferrin receptor is a carrier protein for transferrin. ... CD72, also known in murine biology as Lyb-2, is a protein active in the immune system of animals. ... The protein CD80 is a molecule which provides a costimulatory signal necessary for T cell activation and survival. ... The protein CD86 is a molecule which provides a costimulatory signal necessary for T cell activation and survival. ... The Fas receptor (FasR) is the most intensely studied member of the death receptor family. ... VCAM-1 (vascular cell adhesion molecule-1), also known as CD106, is a molecule with a considerable role in the human immune system. ... This CD molecule is the membrane receptor for stem cell factor (SCF), also known as steel factor or c-kit ligand. Steel factor is a polypeptide that activates bone marrow precursors of a number of blood cells, but its receptor is also present on other cells. ... The Interleukin-2 Receptor (IL-2R) is heterotrimeric protein expressed on the surface of certain immune cells, such as lymphocytes, that binds and responds to a cytokine called interleukin 2. ... Common gamma chain (γc) is a cytokine receptor subunit that is located on the surface of certain sub-sets of lymphocytes (white blood cells). ... Thrombomodulin is an integral membrane protein expressed on the surface of epithelial cells. ... Thromboplastin is a substance present in tissues, platelets, and leukocytes necessary for the coagulation of blood; in the presence of calcium ions thromboplastin is necessary for the conversion of prothrombin to thrombin, an important step in coagulation of blood. ... Angiotensin converting enzyme Angiotensin-Converting Enzyme (ACE, EC 3. ... Basigin is a member of the immunoglobulin superfamily that is also known as EMMPRIN, short for extracellular matrix metalloproteinase inducer, and recently has been designated CD147 (cluster of differentiation 147). ... CTLA-4 (Cytotoxic T-lymphocyte antigen-4) is a CD28-family receptor expressed on mainly CD4+ T cells. ... CD154, also called CD40 ligand or CD40L, is a protein that is expressed on T cell surfaces. ... CD155 is a Type I transmembrane glycoprotein in the immunoglobulin superfamily. ... A C-type lectin receptor present mainly on myeloid and pre-plasmacytoid dendritic cells that mediates dendritic cell rolling interactions with blood endothelium and activation of CD4+ T cells, as well as recognition of pathogen haptens. ...

List of Human Clusters of Differentiation The following is a list of Clusters of Differentiation (or CD) molecules. ...

Adenosine - Adrenergic - Angiotensin - Bradykinin - Calcitonin - Cannabinoid - Chemokine - Cholecystokinin - Corticotropin-releasing hormone - C5A - Dopamine - Endothelin - FSH-receptor - GABA B - Galanin - Glucagon - Gonadotropin-releasing hormone - Histamine (H1, H2, H3, H4) - Luteinizing hormone/choriogonadotropin - Melanocortin (MC1R, MC2R) - Melatonin - Metabotropic glutamate - Muscarinic acetylcholine - Neurotensin - Olfactory - Opioid (Delta, Kappa, Mu, Sigma, Nociceptin) - Parathyroid hormone - Purinergics (P2Y) - Trace amine-associated - Secretin - Serotonin, all but 5-HT3 (5-HT2A) Transmembrane receptors are integral membrane proteins, which reside and operate typically within a cells plasma membrane, but also in the membranes of some subcellular compartments and organelles. ... Figure 1. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... Epinephrine Norepinephrine The adrenergic receptors (or adrenoceptors) are a class of G protein-coupled receptors that are targets of the catecholamines. ... The angiotensin receptors are a class of G protein-coupled receptors with angiotensins as ligands. ... Bradykinin, along with kallidin signals through the B2 receptor which is ubiquitously and constitutively expressed in healthy tissues. ... The calcitonin receptor is a G protein-coupled receptor which binds calcitonin. ... The cannabinoid receptors are a class of receptors under the G-protein coupled receptor superfamily. ... Typical structure of a chemokine receptor, with seven transmembrane domains and a characteristic DRY motif in the second intracellular domain. ... Cholecystokinin receptors or CCK receptors are a group of G_protein coupled receptors. ... Corticotropin-releasing hormone receptor is a G protein-coupled receptor which binds corticotropin-releasing hormone. ... The dopamine receptors are a class of metabotropic G-protein-coupled receptors with the neurotransmitter dopamine as their endogenous ligand. ... There are at least three known endothelin receptors, ETa, ETb1 and ETb2, all of which are G-protein coupled whose activation result in elevation of intracellular-free calcium. ... The follicle stimulating hormone receptor or FSH-receptor (FSHR) is a transmembrane receptor that interacts with the follicle stimulating hormone (FSH) and represents a G protein-coupled receptor (GPCR). ... GABAB receptors (GABABR) are metabotropic transmembrane receptors that are linked via G-proteins to potassium channels (Chen et al. ... The galanin receptor is a G protein-coupled receptor which binds galanin. ... The glucagon receptor is a 62 kDa peptide that is activated by glucagon and is a member if the g-protein coupled family of receptors. ... Gonadotropin-releasing hormone receptor (GNRHR) is a member of the seven-transmembrane, G-protein coupled receptor (GPCR) family. ... The histamine receptors are a class of G-protein coupled receptors with histamine as their endogenous ligand. ... // H1 receptors Distribution Smooth muscle Endothelial cells Adrenal medulla Heart CNS Effects of Histamine at H1-receptors Vasodilation of small bloods vessels - flushing Increase Capillary Permeability - leaky endothelial cells - oedema Vasoconstriction of large vessels Contraction of smooth muscle - bronchial muscle H1-receptors Activates phospholipase C Mediated by a pertussis toxin... H2 receptors positively coupled to adenylate cyclase via Gs. ... H3 receptors are expressed in the central nervous system and, to a lesser extent, the peripheral nervous system, where they act as autoreceptors in presynaptic histaminergic neurons, and control histamine turnover[1] by feedback inhibition of histamine synthesis and release as well. ... The H4 histamine receptor was discovered by Nguyen et al in March of 2001, who also discovered the gene encoded it in a search of the GenBank databases. ... The luteinizing hormone/choriogonadotropin receptor (LHCGR), also lutropin/choriogonadotropin receptor (LCGR) is a transmembrane receptor that interacts with both luteinizing hormone (LH) and chorionic gonadotropins (such as hCG in humans) and represents a G protein-coupled receptor (GPCR). ... Melanocortin receptors are members of the rhodopsin family of 7-transmembrane, G-protein coupled receptors. ... The Melanocortin-1 receptor (Mc1r) is one of the key proteins in hair colour production. ... A melatonin receptor is a G protein-coupled receptor which binds melatonin. ... Metabotropic glutamate receptors, or mGluRs, are a type of glutamate receptor which are active through an indirect metabotropic process. ... Amanita muscaria from which muscarine was isolated Acetylcholine - natural agonist of muscarinic and nicotinic receptors. ... The neurotensin receptor is a G protein-coupled receptor which binds neurotensin. ... Olfactory receptors are a type of G protein-coupled receptor in olfactory receptor neurons. ... To meet Wikipedias quality standards, this article may require cleanup. ... Opioid receptors are a group of G-protein coupled receptors with opioids as ligands. ... There are two known parathyroid hormone receptors in mammals termed PTH1R and PTH2R. These receptors are members of the 7 transmembrane G protein-coupled family of receptors. ... Purinergic receptors are a family of receptors which are activated by purine-containing compounds such as adenosine and the nucleotides ATP and UTP. The members of the family include the following: Adenosine receptor MeSH Purinergic+Receptors      Transmembrane receptor: G protein-coupled receptors Adenosine - Adrenergic - Angiotensin - Bradykinin - Calcitonin - Cannabinoid - Chemokine - Cholecystokinin... P2Y receptors are G protein-coupled receptors that are stimulated by nucleotides such as ATP (P2Y2, P2Y11), ADP, UTP (P2Y2, P2Y4), UDP (P2Y6) and UDP-glucose. ... Trace amine-associated receptors, abbreviated TAAR and previously abbreviated TAR and TA, are a class of G protein-coupled receptors identified in 2001. ... The secretin receptor is a G protein-coupled receptor which binds secretin. ... In the field of neurochemistry, 5-HT receptors are receptors for the neurotransmitter and peripheral signal mediator serotonin, also known as 5-hydroxytryptamine or 5-HT. 5-HT receptors are located on the cell membrane of nerve cells and other cell types in animals and mediate the effects of serotonin... The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ...

Rhodopsin A rhodopsin molecule (yellow) with bound retinal (orange), embedded in a cell membrane (lipids shown as green, head groups as red/blue). ...