Titanic protein gives muscles structure and bounce

Article Abstract:

Sigfried Labeit and Bernhard Kolmerer have sequenced the muscle protein titin, the largest known protein with a molecular weight around 3 million. The sequence included a previously unknown protein motif, which may help explain titin's role in springing back muscles that have been stretched.

Muscle contraction, Muscle proteins, Amino acid sequence, Amino acid sequencing

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Social status sculpts activity of crayfish neurons

Article Abstract:

Research on crayfish indicates that changes in the animal's social status causes changes in its neural circuitry and in its behavior. A neuron in dominant crayfish fires in response to serotonin while the same neuron is suppressed by serotonin in subordinate crayfish.

Physiological adaptation, Social hierarchy in animals, Dominance (Animal behavior), Neural circuitry, Serotonin, Crayfish, Crayfishes

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