### protein:

Muscle protein
* Most muscle proteins release into blood.
* are a central focus and provide the background for studying related systems.
* become more soluble after extended storage.
* contains twenty different amino acids.
* is particularly high in branch-chain amino acids.

Myosin
* are a large family of proteins that are found in most human cells
  - superfamily of ubiquitous actin-based motor proteins
* includes atoms.
* includes chemical chain
  - groups

Peripheral protein
* are on the membrane surface.
* attach loosely to the inner or outer surface of the plasma membrane.

### protein:

Plant protein
* Most plant proteins find in food
  - pet food
* Some plant proteins find in cereal grain
* Some plant proteins have low biological values
* are easier to digest than animal proteins
  - lower in fat than animal proteins
  - only partly digestible by animals that are omnivores or insectivores
  - usually incomplete but they can be made complete by combining certain foods
* is as easily absorbed and as useful to the body as animal protein
  - just as effectively used to build muscle protein as is animal protein
  - of inferior quality
* puts less wear and tear on the kidneys than animal protein does.

### protein:

Plasma protein
* Many plasma proteins can interact with drugs.
* Most plasma proteins have functions.
* Some plasma proteins are synthesized in livers.
* Some plasma proteins carry charge
  - negative charge
* are essential for all living beings
  - made mostly by the liver
* circulate in the body while other proteins are somewhat stationary.
+ Blood, Where does blood come from?: Biochemistry :: Cardiovascular system
  * Plasma proteins are made mostly by the liver. The water and electrolytes in plasma come from the food and water that you eat.

### protein | plasma protein:

Clotting factor
* act very much like powdered gelatin.
* are a protein in the plasma.
* cause blood clots in a different way.

Coagulation factor
* are notoriously unstable
  - proteins that work together in the blood clotting process
* deficiencies more often cause bleeding into the gastrointestinal tract or joints.

Prion protein
* are endogenous to humans and animals.
* can adopt a certain three-dimensional shape that differs from that of a normal prion.
* carry the disease between individuals and cause deterioration of the brain.
* is necessary for normal synaptic function.

Receptor protein
* Some receptor proteins are intracellular.
* are responsible for detecting, decoding and transducing signals into the cells.
* can also produce antibodies.
* extend through the cell membrane.

Regulatory protein
* Some regulatory proteins lead to degradations.
* binding motifs are short, unpredictable and in complex linear associations.
* can often fit into the major groove.

Rice protein
* contains all eight essential amino acids, and has no saturated fat or cholesterol.
* is derived from brown rice using a natural enzyme
  - used in foods as a flavor and nutrition enhancer

Secreted protein
* Many secreted proteins are particularly important in bacterial pathogenesis.
* Most secreted proteins are modified before secretion.
* are a cornerstone of the biotechnology industry.
* cleaved by furin include the hepatocyte and nerve growth factors and pro-albumin.
* mediate the combinatorial action of homeotic genes.

Secretory protein
* Some secretory proteins are useful as drugs themselves.
* are synthesized in the endoplasmic reticulum.

Several protein
* are required for the foot projections to wrap around the capillaries and function
  - strong allergens even in their unfolded state
* produced by plants are already in clinical trials in the United States.
* work together as a machine to replicate chromosomes.

Simple protein
* are all protein, with no non-protein comoponents.
* yield only amino acids on hydrolysis.