16990
Bromelain from pineapple stem
powder, yellow-brown, 2-5 U/mg
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About This Item
CAS Number:
UNSPSC Code:
12352204
EC Number:
253-387-5
MDL number:
form
powder
specific activity
2-5 U/mg
mol wt
Mr ~28000
color
yellow-brown
storage temp.
−20°C
Other Notes
Cysteine protease. Amino acid sequence; Resolution of β-hydroxy-α-amino acids by the action of proteases on their N-acyl methyl esters
1 U corresponds to the amount of enzyme which releases 1 μmol 4-nitrophenol per minute at pH 4.6 and 25°C (Nα-carbobenzoxy-L-lysine-4-nitrophenyl ester as substrate)
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signalword
Danger
hcodes
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 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Faceshields, Gloves
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A Ritonja et al.
FEBS letters, 247(2), 419-424 (1989-04-24)
The amino acid sequence of stem bromelain, the major cysteine proteinase from pineapple stem is described. It shows that the enzyme is a member of the papain superfamily of cysteine proteinases, but is not very closely related to any other
R. Chenevert et al.
Canadian Journal of Chemistry, 68, 960-960 (1990)