Recombinant ESX-1 secretion-associated protein EspK (espK), partial

Product Specifications

Abbreviation

Recombinant Mycobacterium tuberculosis espK protein, partial

Gene Name

EspK

UniProt

P9WJC1

Expression Region

21-114aa

Organism

Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)

Target Sequence

VEADEDTFYDRAQEYSQVLQRVTDVLDTCRQQKGHVFEGGLWSGGAANAANGALGANINQLMTLQDYLATVITWHRHIAGLIEQAKSDIGNNVD

Tag

N-terminal 10xHis-tagged and C-terminal Myc-tagged

Type

In Stock Protein

Source

E.coli

Field of Research

Others

Relevance

May act as a chaperone that facilitates EspB secretion through an interaction with EccCb1.

Endotoxin

Not test

Purity

Greater than 90% as determined by SDS-PAGE.

Activity

Not Test

Form

Liquid or Lyophilized powder

Buffer

If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.

Reconstitution

We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.

Molecular Weight

17.7 kDa

References & Citations

"A mycobacterium ESX-1-secreted virulence factor with unique requirements for export." McLaughlin B., Chon J.S., MacGurn J.A., Carlsson F., Cheng T.L., Cox J.S., Brown E.J. PLoS Pathog. 3:E105-E105 (2007)

Storage Conditions

The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.