11S globulin family is a family of
globulin
The globulins are a family of globular proteins that have higher molecular weights than albumins and are insoluble in pure water but dissolve in dilute salt solutions. Some globulins are produced in the liver, while others are made by the immune ...
proteins chiefly found in seeds of
legumes (
legumin-like),
along with 7S family, often found in a protein fraction within a protein isolate. They are used as storage of important nutrients for plant growth, and therefore hardy enough to pass through the human digestive system unscathed. One common example of an 11S globulin includes
glycinin derived from
soy
The soybean, soy bean, or soya bean (''Glycine max'') is a species of legume native to East Asia, widely grown for its edible bean, which has numerous uses.
Traditional unfermented food uses of soybeans include soy milk, from which tofu and ...
.
Name
The term 11S refers to the
sedimentation coefficient
The sedimentation coefficient () of a particle characterizes its sedimentation during centrifugation. It is defined as the ratio of a particle's sedimentation velocity to the applied acceleration causing the sedimentation.
: s = \frac
The sedime ...
, with a range of 10.5–13 versus the
vicilin-like globulins (7S family) with coefficients of 7.0–9.0
Characteristics
It is characterized by a hexamer (with hexagonal shape). Several residues are conserved among 11S family.
Like other globulins, they are not completely digested and broken into amino acids and have the potential to bind to various proteins in the body and can exert effects independent of their amino acids constituents, even after consumption.
They tend to have high emulsifying effects.
References
External links
Power of Soy Part 1 : Anti aging Soy Protein - Medical Frontiers NHK
Seed storage proteins
Protein families
{{protein-stub