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Merck

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:
9073-78-3
UNSPSC Code:
12352204
NACRES:
NA.75
EC Number:
232-973-4
MDL number:
MFCD00165549
EC Number:
3.4.24.27 (BRENDA, IUBMB)
eCl@ss:
32160410
Specific activity:
30-350 units/mg protein (E1%/280)
Biological source:
Geobacillus stearothermophilus

Key Documents

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biological source

Geobacillus stearothermophilus

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

Quality Level

200

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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).

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
GHS08,GHS07

Hazard Classifications

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

wgk

WGK 1

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

T7902-100MG: + T7902-BULK: + T7902-VAR: + T7902-25MG: + T7902-10MG: + T7902-250MG:

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Certificates of Analysis (COA)

Lot/Batch Number
0000531279
0000531277
0000531278
0000528748
0000528748

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Allen F Ryan et al.
Frontiers in genetics, 11, 358-358 (2020-05-01)
Single-cell transcriptomics was used to profile cells of the normal murine middle ear. Clustering analysis of 6770 transcriptomes identified 17 cell clusters corresponding to distinct cell types: five epithelial, three stromal, three lymphocyte, two monocyte, two endothelial, one pericyte and
Lukas Menges et al.
British journal of pharmacology, 176(24), 4696-4707 (2019-08-20)
The intracellular signalling molecule cGMP, formed by NO-sensitive GC (NO-GC), has an established function in the vascular system. Despite numerous reports about NO-induced cGMP effects in the heart, the underlying cGMP signals are poorly characterized. Therefore, we analysed cGMP signals
Natalie Seach et al.
Journal of immunological methods, 385(1-2), 23-34 (2012-08-23)
The reproducible isolation and accurate characterization of thymic epithelial cell (TEC) subsets is of critical importance to the ongoing study of thymopoiesis and its functional decline with age. The study of adult TEC, however, is significantly hampered due to the
David P Minde et al.
PloS one, 7(10), e46147-e46147 (2012-10-12)
The biophysical stability is an important parameter for protein activity both in vivo and in vitro. Here we propose a method to analyse thermal melting of protein domains in lysates: Fast parallel proteolysis (FASTpp). Combining unfolding by a temperature gradient
Yuichi Kawasaki et al.
Journal of biochemistry, 153(1), 85-92 (2012-10-23)
The thermolysin variant G8C/N60C/S65P in which the triple mutation in the N-terminal domain, Gly8→Cys/Asn60→Cys/Ser65→Pro, is undertaken increases stability [Yasukawa, K. and Inouye, K. (2007) Improving the activity and stability of thermolysin by site-directed mutagenesis. Biochim. Biophys. Acta 1774, 1281-1288] and
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