Part:BBa_K3605005
CcpAx protein from Gluconacetobacter xylinus.
The CcpAx protein, also known as ORF-2, encoded by ccpax gene, functions as a mediator of protein-protein interactions and is important for localization of the bacterial cellulose synthase complex to the cell membrane in Gluconacetobacter xylinus.
This part contains the CcpAx protein, also known as ORF-2, encoded by ccpax gene, functions as a mediator of protein-protein interactions and is important for localization of the bacterial cellulose synthase complex to the cell membrane in Gluconacetobacter xylinus. CcpAx gene, containing 936bp, was amplified using PCR method, and then inserted into the vector pSB1C3. The identification result is showed in Fig.1.
Fig.1. The result of CcpAx gene cloning.
M: Marker; 1: PCR result of CcpAx; 2: Digestion of pSB1C3 containing CcpAx.
CcpAx protein is crucial for the production of bacterial cellulose in the culture medium, because it helps the bacterial cellulose synthase to localize to the cell membrane. To make sure CcpAx protein is overexpressed in the transferred E. coli, we purified this protein using Ni-NTA affinity chromatography. The result indicated that CcpAx was successfully overexpressed, showed in the Fig.2.
Fig.2. Expression of CcpAx and purification by Ni-NTA affinity chromatography. M: protein marker; 1: precipitation samples in the cell lysates; 2: supernatant samples in the cell lysates; 3: 50 mM imidazole eluent; 4: 100 mM imidazole eluent; 5: 200 mM imidazole eluent; 6: eluent after purification. This figure showed that 200mM imidazole eluent is the best concentration for elution expressed CcpAx.
Sequence and Features
- 10COMPATIBLE WITH RFC[10]
- 12COMPATIBLE WITH RFC[12]
- 21COMPATIBLE WITH RFC[21]
- 23COMPATIBLE WITH RFC[23]
- 25INCOMPATIBLE WITH RFC[25]Illegal NgoMIV site found at 441
Illegal AgeI site found at 204 - 1000COMPATIBLE WITH RFC[1000]
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