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.
Tag
N-terminal 6xHis-tagged
Molecular Weight
28.5 kDa
Relevance
Binds to the mitochondrial light strand promoter and functions in mitochondrial transcription regulation . Component of the mitochondrial transcription initiation complex, composed at least of TFB2M, TFAM and POLRMT that is required for basal transcription of mitochondrial DNA . In this complex, TFAM recruits POLRMT to a specific promoter whereas TFB2M induces structural changes in POLRMT to enable promoter opening and trapping of the DNA non-template strand . Required for accurate and efficient promoter recognition by the mitochondrial RNA polymerase . Promotes transcription initiation from the HSP1 and the light strand promoter by binding immediately upstream of transcriptional start sites . Is able to unwind DNA . Bends the mitochondrial light strand promoter DNA into a U-turn shape via its HMG boxes . Required for maintenance of normal levels of mitochondrial DNA . May play a role in organizing and compacting mitochondrial DNA .
Source
E.coli
Endotoxin Level
Not test.
Form
Liquid or Lyophilized powder
Notes
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
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.
Purity
Greater than 90% as determined by SDS-PAGE.
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°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Reviews of Recombinant Human Transcription factor A, mitochondrial (TFAM)