Resonance
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Honeybees use a ‘Speedometer’ to Navigate Successfully

Moushumi Sen Sarma

We move around, find our bearings in an unfamiliar place, quickly learn the way home, or school, without even being aware of the processes which enable us to do so. The skills required to navigate in a complex world like ours is not easy: We must be able to have a measure of distance and direction, recognize landmarks and use a host of other cues to successfully find our way around. Every animal that moves around, needs to be able to navigate successfully and thus needs similar skills. To appreciate how important it is to navigate successfully, consider an animal that leaves behind the helpless young in a nest and must come back with food: the cost of making mistakes could be extremely high. 

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Address for Correspondence
Moushumi Sen Sarma,
Centre for Ecological Sciences,
Indian Institute of Science,
Bangalore 560012, India.
Email:  moushumi@ces.iisc.ernet.in

 

Learning from a Sea Snail: Eric Kandel

Rohini Balakrishnan

In the year 2000, Eric Kandel shared the Nobel Prize in Physiology and Medicine1 with two other neurobiologists: Arvid Carlsson and Paul Greengard. Whereas Carlsson and Greengard were awarded for their work on dopamine, an important neurotransmitter in the brain, changes in the level of which result in Parkinson’s disease, Eric Kandel was honoured for his extensive and invaluable contribution to our understanding of the cellular and molecular mechanisms of learning and memory.  of the term was extended to include a class of structurally unrelated proteins which mediate correct folding of other proteins but do not themselves form a part of the final structure. In a broader sense, they help determine the fate of a protein in the cell. Not only do they ensure correct folding, but also the correct assembly of the units of an oligomeric protein and transport of a protein to its particular subcellular compartment. During heat stress they assume the responsibility of quality control. They bind the heat denatured proteins and catalyze their renaturation.  

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Address for Correspondence
Rohini Balakrishnan,
Centre for Ecological Sciences,
Indian Institute of Science,
Bangalore 560012, India.


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