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Muscleblind-like 2: circadian expression in the mammalian pineal gland is controlled by an adrenergic-cAMP mechanism.


ABSTRACT: Muscleblind-like 2 (Mbnl2) is a zinc finger protein first identified in Drosophila. It appears to be essential for photoreceptor development and to be involved in RNA splicing. Here we report that Mbnl2 is strongly expressed in the rat pineal gland. The abundance of pineal Mbnl2 transcripts follows a marked circadian rhythm with peak levels approximately sevenfold higher at night than day levels. Mbnl2 protein exhibits a similar rhythm. In vitro studies indicate that the abundance of Mbnl2 transcripts and protein are controlled by an adrenergic/cAMP mechanism.

SUBMITTER: Kim JS 

PROVIDER: S-EPMC2766844 | biostudies-literature | 2009 Jul

REPOSITORIES: biostudies-literature

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Muscleblind-like 2: circadian expression in the mammalian pineal gland is controlled by an adrenergic-cAMP mechanism.

Kim Jong-So JS   Coon Steven L SL   Weller Joan L JL   Blackshaw Seth S   Rath Martin F MF   Møller Morten M   Klein David C DC  

Journal of neurochemistry 20090519 2


Muscleblind-like 2 (Mbnl2) is a zinc finger protein first identified in Drosophila. It appears to be essential for photoreceptor development and to be involved in RNA splicing. Here we report that Mbnl2 is strongly expressed in the rat pineal gland. The abundance of pineal Mbnl2 transcripts follows a marked circadian rhythm with peak levels approximately sevenfold higher at night than day levels. Mbnl2 protein exhibits a similar rhythm. In vitro studies indicate that the abundance of Mbnl2 trans  ...[more]

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