Part:BBa_K2485000

SRPP4 Taraxacum brevicorniculatum

This makes a protein for latex production in the dandelion species Taraxacum brevicorniculatum.

Sequence and Features

Assembly Compatibility:

• 10
  COMPATIBLE WITH RFC[10]
• 12
  COMPATIBLE WITH RFC[12]
• 21
  COMPATIBLE WITH RFC[21]
• 23
  COMPATIBLE WITH RFC[23]
• 25
  COMPATIBLE WITH RFC[25]
• 1000
  INCOMPATIBLE WITH RFC[1000]

  Illegal BsaI site found at 318
  

Contribution

• Group: SCU-WestChina iGEM team 2020
• Author: Mingyao Wang
• Summary: function of SRPP4 cooperating with other subunits

Characterization

Visualized expression with other subunits

Fig1. The affinity of TbSRPPs for phospholipids depends on the head group and side chain, and influences particle size and distribution

Function Evaluation: (1) Its expression can be upregulated by abiotic stress and promote water-stress tolerance in A. thaliana which indicate its function of abiotic stress resistance.(shown in Fig1) (2) Its intracellular localization in N. benthamiana protoplasts is almost completely the same with TbSRPP2/5. For one thing, after testing its function of stability resistance and assembly with other subunits in lipid droplet, it’s revealed that SRPP4 is essential for rubber particle integrity with SRPP5. For another, TbSRPP3–5 (and TbREF) facilitate the formation of a rubber biosynthesis complex, then TbSRPP4 and TbSRPP2 cooperate to move lipid.

Fig2. Expression levels changes of SRPP4 under abiotic stress conditions.

Fig3. Intracellular localization of TbSRPP4 in N. benthamiana protoplasts.

Fig4. Intracellular localization of TbSRPP4 in N. benthamiana leaf epidermis cells.

Refrence [1]Laibach, N., Schmidl, S., Müller, B., Bergmann, M., Prüfer, D., & Schulze Gronover, C. (2018). Small rubber particle proteins from Taraxacum brevicorniculatum promote stress tolerance and influence the size and distribution of lipid droplets and artificial poly(cis -1,4-isoprene) bodies. The Plant Journal, 93(6), 1045–1061. doi:10.1111/tpj.13829