Friday, November 2, 2012
Cellular computing - Molecular computing - DNA computing
High parallelism: DNA could process in several ways parellely.
Speed: All biological reactions happen with in seconds. So, using biological molecules can increase the speed of computing to a greater extent.
Okay, but, how biological molecules could be used for computing?
The basics behind the computing is the usage of logic gates.
AND , OR gates are used. Cells can also behave as logic gates.
This is possible by a technique called CID - Chemically Inducible Dimerization.
This tool takes advantage of natural biological mechanisms that
bring together two proteins into a complex in the presence of an
• FRP and FKBP joined by rapamycin.GAI and GID1 by gibberellins.
• OR gate, FRB and GAI were bound together at the cell membrane,
while FKBP and GID1 were bound together floating freely in
the cell. Adding either rapamycin, gibberellins, or both to cells
brought the freely floating complex to the one at the cellular
membrane, linking up the matching proteins and triggering the
• AND gate, the researchers placed just GAI at the cell membrane,
with just FRB and complexes of FKBP and GID1 free-floating in the
cell. This system required all four proteins to link up to produce
membrane ruffling, which wouldn't occur without both input
This look great isn't it?
DISADVANTAGES of this DNA computing:
• Just newly developing
• Some problem regarding incorporating the
circuit into the host
• Need a manual control
I had a great time during the lecture session with my friend Priya :)
We confused our class mates as much as possible :P :P
Any doubts? kindly comment, I'll try to answer. Bye.. Take care!
Posted by Kanmani Rajan