Biology
- Chymotrypsin
Term: chymotrypsinLiterally meaning: ?protein of rubbing juices?Origin: Greek?????/chymos(=juice) > ???/cheo(=pour)+ ?????/trivo (=rub, powder, grind) > (simple past) ?????? /etrips? Coined/History In 1934 M. ?unitz and...
- Zymogen
Term: zymogen Literally meaning: ?producing ferment? Origin: Anc Greek????/zyme(= leaven, ferment)+?????/geno (=to birth, produce) Coined/HistoryIn 1875, by German physiologist Rudolf Peter Heinrich Heidenhain (1834-1897) who wrote:?a pancreas taken afresh...
- Polypeptide
Term: polypeptideLiterally meaning: ?several peptides?Origin: Greek????-/poly-(=many, several)????????/peptidio(=peptid) a low weight polymer composed of two (dipeptide) or more amino acids joined by peptide bonds consisting...
- Peptide
Term: peptideLiterally meaning: ?product of digestion?Origin: Anc Greek>?????/pepto(=digest)+????/-idio(=ide, suffix meaning a member or a part of group) Coined/HistoryThe name probably derived by the process of getting peptids (hydrolysis/digestion...
- Protoplasm
Term: protoplasm Origin: Anc Greek ??????/protos(=first or prime importance )?????? (noun)/plasma(=something formed or molded, an idol) > ??????/plasso(=create, form, mold) à substance without shape Coined: The ?protoplasma? word was in Late...
Biology
pepsin
Term: pepsin
Literally meaning: ?protein of digesting?
Origin: Anc Greek
?????/pepto(=digest)
Coined/History
The term coined by German physiologist Theodor Schwann in the early 19th century when he identified a chemical agent in the stomachs of animals with digestive properties. In 1929 John H. Nortrop was able to isolate and crystallize it.
Definition
Pepsin is a proteolytic acidic enzyme (unstable above pH 6) that cleaves the peptide bonds at carboxy site preferentially of aromatic residues. Pepsin is produced in the stomach mucosa after the proteolysis of proenzyme pepsinogen.
- Chymotrypsin
Term: chymotrypsinLiterally meaning: ?protein of rubbing juices?Origin: Greek?????/chymos(=juice) > ???/cheo(=pour)+ ?????/trivo (=rub, powder, grind) > (simple past) ?????? /etrips? Coined/History In 1934 M. ?unitz and...
- Zymogen
Term: zymogen Literally meaning: ?producing ferment? Origin: Anc Greek????/zyme(= leaven, ferment)+?????/geno (=to birth, produce) Coined/HistoryIn 1875, by German physiologist Rudolf Peter Heinrich Heidenhain (1834-1897) who wrote:?a pancreas taken afresh...
- Polypeptide
Term: polypeptideLiterally meaning: ?several peptides?Origin: Greek????-/poly-(=many, several)????????/peptidio(=peptid) a low weight polymer composed of two (dipeptide) or more amino acids joined by peptide bonds consisting...
- Peptide
Term: peptideLiterally meaning: ?product of digestion?Origin: Anc Greek>?????/pepto(=digest)+????/-idio(=ide, suffix meaning a member or a part of group) Coined/HistoryThe name probably derived by the process of getting peptids (hydrolysis/digestion...
- Protoplasm
Term: protoplasm Origin: Anc Greek ??????/protos(=first or prime importance )?????? (noun)/plasma(=something formed or molded, an idol) > ??????/plasso(=create, form, mold) à substance without shape Coined: The ?protoplasma? word was in Late...