F4165

Ficin from fig tree latex

powder, ≥0.1 unit/mg solid

• Synonym(s): Debricin, Ficain, higueroxyl delabarre
• CAS Number: 9001-33-6
• UNSPSC Code: 12352204
• NACRES: NA.54
• EC Number: 232-599-1
• MDL number: MFCD00081597
• EC Number: 3.4.22.3 (BRENDA, IUBMB)
• Specific activity: ≥0.1 unit/mg solid
• Biological source: fig tree (latex)

Properties

• biological source: fig tree (latex)
• Quality Segment: 200
• form: powder
• specific activity: ≥0.1 unit/mg solid
• mol wt: 23.8 kDa
• storage temp.: −20°C

Description

General description

Extinction Coefficient: E^1% = 21.0 (280 nm)
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 K_m 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.

Other Notes

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.

Safety Information

• pictograms: GHS08,GHS07
• signalword: Danger
• hcodes: H315,H319,H334,H335
• pcodes: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
• target_organs: Respiratory system
• Storage Class: 11 - Combustible Solids
• wgk: WGK 1
• ppe: dust mask type N95 (US), Eyeshields, Faceshields, Gloves