rennin


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rennin

 [ren´in]
the milk-curdling enzyme found in the gastric juice of human infants (before pepsin formation) and abundantly in that of the calf and other ruminants; a preparation from the stomach of the calf is used to coagulate milk protein to facilitate its digestion. Rennin catalyzes the conversion of casein from a soluble to an insoluble form (paracasein or curd).

chy·mo·sin

(kī'mō-sin),
An aspartic proteinase structurally homologous with pepsin, formed from prochymosin; the milk-curdling enzyme obtained from the glandular layer of the stomach of the calf. Acts on a single peptide bond (-Phe-Met-) in κ-casein.
Synonym(s): chymase, pexin, rennase, rennet, rennin

rennin

(rĕn′ĭn)
n.
An enzyme that catalyzes the coagulation of milk, obtained from the fourth stomach of calves and other young ruminants or from genetically engineered microorganisms and used in making cheeses and junkets. Also called chymosin.

chy·mo·sin

(kī'mō-sin)
A proteinase structurally homologous with pepsin; the milk-curdling enzyme obtained from the stomach of the calf.
Synonym(s): rennin.

rennin

or

chymase

an enzyme present in gastric juice secreted by the gastric glands of the stomach wall that coagulates caseinogen in milk to form casein, which forms an insoluble curd (a calcium-casein compound) which is then attacked by pepsin. It is important particularly in young mammals because it increases retention time in the stomach allowing for a more efficient digestion of the primary food source.
References in periodicals archive ?
The amino acid sequence of the first 61 residues of chymosin (rennin ec 3.4.4.3).
These benefits are gained due to blocking peripheral adrenoceptors, decreasing rennin secretion from kidneys, and decreasing oxygen use in myocard [25].
Arterial blood gas analysis, 24 hours urinary potassium excretion, rennin aldosterone level estimation were considered in this patient to delineate the cause of hypokalemia but the facilities were not available at our hospital.
RENNET: An extract from the membranes of calves' stomachs that contains rennin, an enzyme that aids in coagulating milk or separating curds from whey.
The literature suggests that the use of ibuprofen at high doses in sports can have several deleterious effects such as decrease in prostaglandins (PGEs) synthesis in the gastrointestinal tract, changes in renal function, peripheral edema, hypertension, and inhibition of renal excretion of water and sodium and hyperkalemia, which results from the reduced release of rennin mediated by PGEs [27].
The hypothyroid population is characterized by significant volume changes, initiating a volume dependant low plasma rennin activity as mechanism of blood pressure elevation.
The hypertensive state of both the SH and SHHF rats has been linked to genetic anomalies in the rennin angiotensin system (Leckie 2001) and the [beta]-adrenergic system (Remmers et al.
The pancreatic juice contains enzymes for digesting proteins (trypsin), carbohydrates (amylopsin), lipids (steapsin), and rennin for coagulating milk.
While still milk-fed, their stomachs produce ample amounts of the enzyme chymosin (or rennin), a reliable cheeseager.
Congenital mesoblastic nephroma, rennin production, and hypertension.