Cell surface molecule

Cell surface molecule

Biological cells are the fundamental units of life, and an extraordinary array of specialized cells have evolved to accomplish the many different tasks required of organisms in their environments. In order for specialized cells to interact with each other and their environments, they must bring things in, release other things, sense pressure, and, in some cases, recognize other cells. All of these functions require cells to have lots of unique molecules on their surfaces (see: cell membrane). In fact, imagine a pin cushion with thousands and thousands of pins. Some are green, some are blue. Some are sticky. Some have flat heads, some have round heads, some are pushed all the way in, some are sticking out. Some of the pins are needles, little pipes, or channels that let things into and out of the cell.

Some of the various kinds of cell surface molecules:
* poron - see aquaporin
* channel - see ion channel
* pump - see transmembrane transport proteins
* receptor
* desmosome
* cadherin
* signal protein - see list of types of proteins


Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Cell adhesion molecule — Cell Adhesion Molecules (CAMs) are proteins located on the cell surface[1] involved with the binding with other cells or with the extracellular matrix (ECM) in the process called cell adhesion. These proteins are typically transmembrane receptors …   Wikipedia

  • cell adhesion molecule — Although this could mean any molecule involved in cellular adhesive phenomena, it has acquired a more restricted sense, namely a molecule on the surface of animal tissue cells, antibodies (or Fab fragments) against which specifically inhibit some …   Dictionary of molecular biology

  • cell-adhesion molecule — noun Any of a class of cell surface proteins, typically glycoproteins, which enable and/or stabilize physical connections between cells or between a cell and an acellular material, such as an extracellular matrix In order for cells in tissues to… …   Wiktionary

  • Cell surface receptor — The seven transmembrane α helix structure of a G protein coupled receptor Cell surface receptors (membrane receptors, transmembrane receptors) are specialized integral membrane proteins that take part in communication between the cell and the… …   Wikipedia

  • cell-surface marker — Any molecule characteristic of the plasma membrane of a cell or in some cases of a specific cell type. 5 nucleotidase and Na+/K+ ATPase are often used as plasma membrane markers …   Dictionary of molecular biology

  • Neural cell adhesion molecule — 1 PDB rendering based on 1epf …   Wikipedia

  • cell — cell1 cell like, adj. /sel/, n. 1. a small room, as in a convent or prison. 2. any of various small compartments or bounded areas forming part of a whole. 3. a small group acting as a unit within a larger organization: a local cell of the… …   Universalium

  • Cell signaling — is part of a complex system of communication that governs basic cellular activities and coordinates cell actions. [Witzany, G. (2000). Life: The Communicative Structure. Norderstedt, Libri BoD.] The ability of cells to perceive and correctly… …   Wikipedia

  • Cell migration — is a central process in the development and maintenance of multicellular organisms. Tissue formation during embryonic development, wound healing and immune responses all require the orchestrated movement of cells in a particular direction to a… …   Wikipedia

  • Cell membrane — Illustration of a Eukaryotic cell membrane The cell membrane or plasma membrane is a biological mem …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”