Locate family members with the last name LABERGE-MACDONALD.

TAMMY LABERGE MACDONALD is an academic who published a paper in 2003 entitled Glutamine synthetase as a biological marker for fish phylogenetics : some new insights. TAMMY LABERGE MACDONALD published this work as part of a team: Laberge Macdonald, Tammy. Here is a description of this work: Glutamine synthetase is a key enzyme for nitrogen metabolism. It occurs in all organisms and is one of the oldest functioning genes. Many vertebrates have only one functional copy of this gene, while many plants have been shown to be multicopy for this gene. Pseudogenes for glutamine synthetase have also been reported in mammals. Until recently only a single copy of glutamine synthetase had been described in fish. However, six copies of this gene are expressed in rainbow trout Oncorhynchus myklss and two copies of this gene are expressed in the gulf toadfish Opsanus beta. We investigated a variety of intertidal fishes from British Columbia, Canada using PCR amplification of genomic DNA product and reverse transcriptase PCR to explore the diversity of glutamine synthetase in fish. We recovered two isoforms of glutamine synthetas.