R4877
Rennin from calf stomach
≥20 units/mg protein
Sinônimo(s):
Chymosin
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About This Item
Produtos recomendados
forma
lyophilized powder
atividade específica
≥20 units/mg protein
purificado por
crystallization
composição
Protein, ≥40%
temperatura de armazenamento
−20°C
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Aplicação
Rennin, also known as chymosin, is a milkclotting acid proteinase produced in the stomach of a calf. It is used in cheesemaking and to study neonatal gastric digestion .
Ações bioquímicas/fisiológicas
Rennin, a 323 amino acid chain, is secreted as an inactive precursor which is then converted into an active enzyme through limited proteolysis. It cleaves the peptide bond between phenylalanine and methionine in K-Casein.
Embalagem
Package size based on protein content
Definição da unidade
One unit will coagulate 10 mL of milk per min at 30 °C.
forma física
Lyophilized powder containing sodium chloride
Nota de análise
Protein determined by biuret.
Palavra indicadora
Danger
Frases de perigo
Declarações de precaução
Classificações de perigo
Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
Órgãos-alvo
Respiratory system
Código de classe de armazenamento
11 - Combustible Solids
Classe de risco de água (WGK)
WGK 3
Certificados de análise (COA)
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B Foltmann et al.
The Journal of biological chemistry, 254(17), 8447-8456 (1979-09-10)
The complete amino acid sequence of calf chymosin (rennin) (EC 3.4.23.4) has been determined. The sequence consists of a single peptide chain of 323 amino acid residues. The primary structure of the precursor part of calf prochymosin was published previously
Kirsten Kastberg Møller et al.
Journal of agricultural and food chemistry, 60(21), 5454-5460 (2012-05-09)
Bovine chymosin constitutes a traditional ingredient for enzymatic milk coagulation in cheese making, providing a strong clotting capacity and low general proteolytic activity. Recently, these properties were surpassed by camel chymosin, but the mechanistic difference behind their action is not
Xin-ping Li et al.
Xi bao yu fen zi mian yi xue za zhi = Chinese journal of cellular and molecular immunology, 28(7), 715-717 (2012-07-10)
To optimize the prochymosin (pCHY) gene codons and express the gene in Escherichia coli (E.coli), and to prepare its antiserum and detect chymosin protein specifically. According to codon usage bias of E.coli, prochymosin gene sequence was synthesized based on the
Neil D Rawlings et al.
Nucleic acids research, 40(Database issue), D343-D350 (2011-11-17)
Peptidases, their substrates and inhibitors are of great relevance to biology, medicine and biotechnology. The MEROPS database (http://merops.sanger.ac.uk) aims to fulfil the need for an integrated source of information about these. The database has hierarchical classifications in which homologous sets
G L Gilliland et al.
Advances in experimental medicine and biology, 306, 23-37 (1991-01-01)
Many aspects of the structure of chymosin are quite unique even though structure comparisons indicate a high degree of structural homology with other eukaryotic aspartic proteinases. The structural homology is shown to be directly related to the sequence homology which
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