Recombinant Escherichia coli DNA gyrase subunit A (gyrA) | CSB-EP365190ENV(A4M2)

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€352.00 - €1,702.00
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Recombinant Escherichia coli DNA gyrase subunit A (gyrA) | CSB-EP365190ENV(A4M2) | Cusabio

Alternative Name(s): hisW (nalA)

Gene Names: gyrA

Research Areas: Others

Organism: Escherichia coli(strain K12)


Source: E.coli

Tag Info: N-terminal 10xHis-tagged

Expression Region: 2-875aa

Sequence Info: Full Length of Mature Protein

MW: 102.8 kDa

Purity: Greater than 85% as determined by SDS-PAGE.

Relevance: A type II topoisomerase that negatively supercoils closed circular double-stranded (ds) DNA in an ATP-dependent manner to maintain chromosomes in an underwound state. This makes better substrates for topoisomerase IV which is the main enzyme that unlinks newly replicated chromosomes in E.coli. Gyrase catalyzes the interconversion of other topological isomers of dsDNA rings, including catenanes. Relaxes negatively supercoiled DNA in an ATP-independent manner. E.coli gyrase has higher supercoiling activity than many other bacterial gyrases; at comparable concentrations E.coli gyrase introduces more supercoils faster than M.tuberculosis gyrase, while M.tuberculosis gyrase has higher decatenation than supercoiling activity compared to E.coli. E.coli makes 15% more negative supercoils in pBR322 plasmid DNA than S.typhimurium; the S.typhimurium GyrB subunit is toxic in E.coli, while the E.coli copy can be expressed in S.typhimurium even though the 2 subunits have 777/804 residues identical. The enzymatic differences between E.coli gyrase and topoisomerase IV are largely due to the GyrA C-terminal domain and specifically the GyrA-box.

Reference: "Quinolone-resistant mutations of the gyrA gene of Escherichia coli." Yoshida H., Kojima T., Yamagishi J., Nakamura S. Mol. Gen. Genet. 211:1-7(1988)

Storage: 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?/-80?. The shelf life of lyophilized form is 12 months at -20?/-80?.

Notes: Repeated freezing and thawing is not recommended. Store working aliquots at 4? for up to one week.


Involvement in disease:

Subcellular Location:

Protein Families:

Tissue Specificity:


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?/-80?. Our default final concentration of glycerol is 50%. Customers could use it as reference.

Uniprot ID: P0AES4

HGNC Database Link: N/A

UniGene Database Link: N/A

KEGG Database Link: N/A

STRING Database Link: N/A

OMIM Database Link: N/A

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