Part:BBa_K2492004

pODR-10: the promoter of coding odorant diacetyl receptor protein.

Part BBa_K2492004 contains odr-10. It is a section of genomic DNA acts as a promoter. In C.elegans, ODR-10 encodes a large family of seven transmembrane olfactory receptor genes[1]which is specifically expressed in neuron AWA and affect chemotaxis to the volatile diacety. POrd-10 is a section of genemoic DNA in front of Ord-10 genes promoting expression of Ord-10 genes[2].

AWA is a member of the olfactory neurons [2]. It responses to attractive volatile odorants. Since we expect to express the functional channelrhodopsins and indicator in specific neuron(AWA for instance), we use pODR-10 to construct plasmid.

If CoCHR is expressed in AWA, we are capable of activating it to manipulate the state of AWA. In our project, we integrated ord-10::Chrimson::GEM-GECO::mCherry transgene to C.elegans by microinjection. Thus, CoCHR (Part BBa_K2492001:CoCHR) promoted by ord-10 is expressed in AWA. We can enhance the attraction of C.elegans through the control of AWA.

[1]:Sengupta P., Chou J.H., Bargmann C.I.Cell 84:899-909(1996)

[2]:Emily R. et al. (1997). Reprogramming Chemotaxis Responses: Sensory Neurons Define Olfactory Preferences in C. elegans, Cell, Vol. 91, 161–169.

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
  COMPATIBLE WITH RFC[1000]

The test of the CoChR using light with different wavelengths and intensity. The lights blue- and blue+ is from the projector whose wavelength is about 480 and the lights whose wavelengths are 395, 440, 470, 560 and 640 are from the LED of fluorescence microscope (Nikon eclipse Ti).

Fig.7 Control the C. elegans by the light. We used the optical fiber to form a light spot and the worm can follow the spot.