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Merck
CN

T7902

Thermolysin from Geobacillus stearothermophilus

powder, BioReagent, 30-350 units/mg protein (E1%/280), suitable for cell culture

Synonym(s):

Protease from Geobacillus stearothermophilus, Thermophilic-bacterial protease

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About This Item

CAS Number:
UNSPSC Code:
12352204
NACRES:
NA.75
EC Number:
232-973-4
MDL number:
EC Number:
Specific activity:
30-350 units/mg protein (E1%/280)
Biological source:
Geobacillus stearothermophilus
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biological source

Geobacillus stearothermophilus

Quality Level

product line

BioReagent

form

powder

specific activity

30-350 units/mg protein (E1%/280)

mol wt

34.6 kDa

purified by

crystallization

technique(s)

cell culture | mammalian: suitable, single cell analysis: suitable

storage temp.

−20°C

Application

A thermostable (thermophilic) extracellular metalloendopeptidase containing four calcium ions. Cofactors are zinc and calcium. Hydrolyzes protein bonds on the N-terminal side of hydrophobic amino acid residues. The pH optimum is 8.0 and the optimal temperature for activity is 70 °C. Considerably stable from pH 5 to 9.5. Thermolysin has a low cleavage specificity, therefore, it produces a number of short fragments that are suitable for sequencing. Preferential cleavage: X-cleavage-Y-Z where X=any amino acid; Y=Leu, Phe, Ile, Val, Met, Ala and Z is any amino acid other than Pro. Cleavage N-terminal to Leu is preferred over cleavage of N-terminal to Phe which is preferred over the others. Often used to do limited proteolysis for peptide mapping and studies of protein structure and conformational changes.

Physical form

lyophilized powder containing calcium and sodium acetate buffer salts

Other Notes

One unit will hydrolyze casein to produce color equivalent to 1.0 μmole (181 μg) of tyrosine per min at pH 7.5 at 37 °C (color by Folin-Ciocalteu reagent).


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signalword

Danger

Storage Class

11 - Combustible Solids

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves

target_organs

Respiratory system

pictograms

Health hazardExclamation mark

Hazard Classifications

Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3

wgk

WGK 1

Regulatory Information

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Raymond G Sierra et al.
Acta crystallographica. Section D, Biological crystallography, 68(Pt 11), 1584-1587 (2012-10-24)
An electrospun liquid microjet has been developed that delivers protein microcrystal suspensions at flow rates of 0.14-3.1 µl min(-1) to perform serial femtosecond crystallography (SFX) studies with X-ray lasers. Thermolysin microcrystals flowed at 0.17 µl min(-1) and diffracted to beyond
Yuchen Gu et al.
Food chemistry, 141(3), 2682-2690 (2013-07-23)
The importance of soy products in reducing the risk of cardiovascular disease is well documented. Our previous computation study has indicated the presence of several potent ACE inhibitory peptides within soybean proteins which needs to be identified. The aim of
Evans Menach et al.
Journal of biochemistry, 152(3), 231-239 (2012-06-01)
In the N-terminal domain of thermolysin, two anti-parallel β-strands, Asn112-Ala113-Phe114-Trp115 and Ser118-Gln119-Met120-Val121-Tyr122 are connected by an Asn116-Gly117 turn to form a β-hairpin structure. In this study, we examined the role of Asn116 in the activity and stability of thermolysin by



Global Trade Item Number

SKUGTIN
T7902-100MG04061837378713
T7902-250MG04061837378720
T7902-25MG04061837378737