Part:BBa_K5136058

rhlA
Required for rhamnolipid surfactant production.

Biology

The RhlA comes from Pseudomonas aeruginosa and can compete with the enzymes of the type II fatty acid synthase (FASII) cycle for the β-hydroxyacyl-acyl carrier protein (ACP) pathway intermediates, therefore supplies the acyl moieties for rhamnolipid biosynthesis. RhlA has a greater affinity for 10-carbon substrates, and is the only enzyme required to generate the lipid component of rhamnolipid. (1)

Usage

We used BBa_K081005 to construct the expression system and obtained the composite BBa_K5136232, which is assembled on the expression vector pSB1C3 by standard assembly. The constructed plasmid was transformed into E. coli DH5α, then the positive transformants were selected by chloramphenicol and confirmed by colony PCR and sequencing.

Characterization

1. Agarose Gel Electrophoresis

After transferring the plasmid into E. coli DH5α, colony PCR was used to certify the plasmid was correct. The expected bands (bp) was obtained at the position around bp (Fig. 1).

Fig.1 The result of colony PCR products of BBa_K5136232_pSB1C3.

Reference

1. Zhu, K.; Rock, C. O., RhlA converts beta-hydroxyacyl-acyl carrier protein intermediates in fatty acid synthesis to the beta-hydroxydecanoyl-beta-hydroxydecanoate component of rhamnolipids in Pseudomonas aeruginosa. J Bacteriol 2008, 190 (9), 3147-54.

Sequence and Features

Assembly Compatibility:

• 10
  COMPATIBLE WITH RFC[10]
• 12
  COMPATIBLE WITH RFC[12]
• 21
  INCOMPATIBLE WITH RFC[21]

  Illegal BamHI site found at 69
  Illegal XhoI site found at 805
  
• 23
  COMPATIBLE WITH RFC[23]
• 25
  COMPATIBLE WITH RFC[25]
• 1000
  INCOMPATIBLE WITH RFC[1000]

  Illegal BsaI site found at 294
  Illegal BsaI.rc site found at 478