Molecules

Articles

• acetyl-CoA
  2 June 2004

  Acetyl CoA

• hyaluronic acid
  5 February 2006

  Hyaluronan

• heme A
  6 October 2003

  Pathology
  anomalies of heme A synthesis COX15 deficiency

• heme
  6 October 2003

  A heme (or haem) is a prosthetic group that consists of an iron atom contained in the center of a large heterocyclic organic ring called a porphyrin.
  Not all porphyrins contain iron, but a substantial fraction of porphyrin-containing metalloproteins have heme as their prosthetic subunit; these are known as hemoproteins.
  Structure
  Function
  Members
  heme A
  Heme synthesis (porphyrin synthesis)
  The enzymatic process that produces heme is properly called porphyrin synthesis, as all the (...)

• human proteins
  4 June 2003

  Proteins are made of amino acids arranged in a linear chain and joined together by peptide bonds.
  Many proteins are the enzymes that catalyze the chemical reactions in metabolism. Other proteins have structural or mechanical functions, such as the proteins that form the cytoskeleton, a system of scaffolding that maintains the cell shape.
  Proteins are also important in cell signaling, immune responses, cell adhesion, active transport across membranes, and the cell cycle.
  Structure
  The (...)

• collagen IV
  11 July 2003

  type IV collagen

• retinoic acid
  11 July 2003

  Definition: Retinoic acid is the oxidized form of Vitamin A.
  Functions
  Embryology
  Retinoic acid via the retinoic acid receptor influences the process of cell differentiation, hence, the growth and development of embryos.
  Retinoic acid functions in determining position along embryonic anterior/posterior axis in chordates. It acts through Hox genes, which ultimately controls anterior/posterior patterning in early developmental stages.
  Retinoic acid acts by binding to heterodimers of the (...)

• SFTPC
  11 February 2004

  SP-C, surfactant protein C

• PIP2
  12 February 2006

  phosphoinositol-diphosphate

• estrogens
  15 April 2005

  Estrogens are key regulators of growth, differentiation, and the physiological functions of a wide range of target tissues, including the male and female reproductive tracts, breast, and skeletal, nervous, cardiovascular, digestive and immune systems.
  The majority of these biological activities of estrogens are mediated through two genetically distinct receptors, ERalpha and ERbeta, which function as hormone-inducible transcription factors.
  Over the past decade, it has become increasingly (...)

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