F4165
Ficin from fig tree latex
powder, ≥0.1 unit/mg solid
Synonym(s):
Debricin, Ficain, higueroxyl delabarre
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1000 UNITS
RM 628.00
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1000 UNITS
RM 628.00
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RM 628.00
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biological source
fig tree (latex)
form
powder
specific activity
≥0.1 unit/mg solid
mol wt
23.8 kDa
storage temp.
−20°C
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General description
Extinction Coefficient: E1% = 21.0 (280 nm)
pI: 9.0
pI: 9.0
Biochem/physiol Actions
Ficin is classified as a thiol protease. It contains a single reactive cysteine at its active site. The amino acid homology of the active site is similar to that of papain. Ficin will cleave proteins at the carboxyl side of Gly, Ser, Thr, Met, Lys, Arg, Tyr, Ala, Asn, and Val. The reported Km for the chromogenic substrate pGlu-Phe-Leu-p-nitroanilide is 0.43 mM. Ficin is inhibited by iodoacetamide, iodoacetic acid, N-ethylmaleimide, mercuric chloride, DFP (diisopropyl fluorophosphate), TLCK (Na-p-Tosyl-lysine chloromethyl ketone), and TPCK (N-Tosyl-L-phenylalanine chloromethyl ketone). Ficin can be used to generate high yielding F (ab′)2 fragments from mouse IgG1.
Unit Definition
One unit will produce a ΔA280 of 1.0 per min at pH 7.0 at 37 °C when measuring TCA soluble products from casein in a final volume of 10 ml (1 cm light path).
The enzyme is soluble in 1 M potassium phosphate buffer, pH 7.0 (0.25 mg/ml), yielding a clear solution.
inhibitor
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substrate
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Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
Target Organs
Respiratory system
Storage Class Code
11 - Combustible Solids
WGK
WGK 1
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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Yufang Yang et al.
Scientific reports, 7, 43141-43141 (2017-02-23)
Ficin is classified as a sulfhydryl protease isolated from the latex of fig trees. In most cases, a particular enzyme fits a few types of substrate and catalyzes one type of reaction. In this investigation, we found sufficient proofs for
Andrey V Sorokin et al.
Polymers, 14(11) (2022-06-11)
This work aims to synthesize graft copolymers of chitosan and N-vinylimidazole (VI) with different compositions to be used as matrices for the immobilization of cysteine proteases-bromelain, ficin, and papain. The copolymers are synthesized by free radical solution copolymerization with a
S Fadýloğlu
Die Nahrung, 45(2), 143-146 (2001-05-31)
Fig tree latex (ficin) was immobilized on Celite by adsorption. The free and immobilized ficin were utilized in the production of teleme (a Turkish milk product). After immobilization, the optimal temperature of ficin was shifted from 60 to 80 degrees
Daniel Janvier et al.
Transfusion, 53(9), 1948-1955 (2012-12-18)
Rh proteins and the Wr(b) antigen, which results from an interaction between Band 3 and glycophorin A, are the most common targets for warm immunoglobulin (Ig)G autoantibodies. Apart from autoanti-Di(b) , a scarce specificity, IgG warm autoantibodies specific for Band
Robertson D Davenport et al.
Transfusion, 44(6), 849-852 (2004-05-26)
Cefotetan can cause severe immune hemolytic anemia that may persist long after the drug is discontinued. To study the binding of cefotetan to RBCs, patients who received cefotetan were followed and tested for the presence of antibody to cefotetan. Patients
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