Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «P»:
Protein C: A vitamin K-dependent protein in
plasma that enters into the cascade of biochemical events leading to
the formation of a clot....
Protein C deficiency
Protein C deficiency: Protein C is a protein in plasma
that enters into the cascade of biochemical events leading to the formation of a clot.
Deficiency of protein C results in thrombotic (clotting) disease and excess platelets with
recurrent thrombophlebitis (inflammation of the vein that occurs wh...
Protein kinase A
Protein kinase A: An enzyme system that is activated by cyclic adenosine monophosphate (cAMP) and that catalyzes the activity of intracellular proteins. There are two isozymes of protein kinase A, type I and type II. Also known as cAMP-dependent protein kinase and cyclic AMP-dependent protein kinase...
Protein kinase A regulatory subunit 1-alpha
Protein kinase A regulatory subunit 1-alpha: See: PRKAR1A....
Protein malnutrition: Insufficient intake of
nitrogen-containing food (protein) to maintain a nitrogen balance or
nitrogen equilibrium. Children are particularly prone to develop
protein malnutrition. To grow, children have to consume enough
nitrogen-containing food (protein) to maintain a posit...
Protein requirements, infant
Protein requirements, infant: Proteins contain different amino acids that are linked together. Proteins provide both calories and the amino acid building blocks that are necessary for proper growth. The protein in human milk provides between 10%-15% of an infant's daily caloric need.
Casein and whey...
Protein ZIP code
Protein ZIP code: An informal name for a molecular cell biology system of signals or "address tags" that guide the movement of a protein within a cell. In more technical terms, protein ZIP codes* are molecular signals that direct the protein from the endoplasmic reticulum, where it is assembled, to ...
Protein, acute phase
Protein, acute phase: See: Acute-phase protein....
Protein, C-reactive: See C-reactive protein....
Protein, proteolipid: See: Proteolipid protein....
Protein-calorie malnutrition: Severe deficiency of protein +
inadequate caloric intake = kwashiorkor. ...
Protein-losing enteropathy: A condition in which there is excessive loss of plasma protein into the intestine. Protein-losing enteropathy can be due to a number of different causes including extensive ulceration of the intestine, intestinal lymphatic blockage, gluten enteropathy, and infiltration of...
Proteins: Large molecules composed of one or more chains of amino acids in a specific order determined by the base sequence of nucleotides in the DNA coding for the protein.
Proteins are required for the structure, function, and regulation of the body's cells, tissues, and organs. Each protein has ...
Proteins, acute-phase: See: Acute-phase protein....
Proteins, G: These molecules
have been described as "biological traffic lights." Located
inside the cell, G proteins are able respond to signals
outside the cell-light, smell, hormones-and translate
(transduce) these signals into action within the cell.
Alfred G. Gilman and Martin Rodbell sha...