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1 July 2004 Predicted Secondary Structure of the Foraminiferal SSU 3′ Major Domain Reveals a Molecular Synapomorphy for Granuloreticulosean Protists
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Abstract

The small subunit ribosomal RNA genes of foraminiferal protists are the largest and most divergent of any eukaryote. We demonstrate that this foraminiferal sequence alteration represents a substantial modification to the small subunit ribosomal RNA structure, including a large (up to 350 nt) novel helix in a very well-conserved portion of the head domain. This modification dates from the beginning of the foraminiferal radiation and, within modern orders, is partially conserved at the sequence level, suggesting that it is a functional part of the ribosome. The pattern of conservation makes it particularly useful for determining lower-taxon relationships in morphologically ambiguous allogromiid foraminifera.

ANDREA HABURA, DANIEL R. ROSEN, and SAMUEL S. BOWSER "Predicted Secondary Structure of the Foraminiferal SSU 3′ Major Domain Reveals a Molecular Synapomorphy for Granuloreticulosean Protists," The Journal of Eukaryotic Microbiology 51(4), 464-471, (1 July 2004). https://doi.org/10.1111/j.1550-7408.2004.tb00397.x
Received: 9 February 2004; Accepted: 12 May 2004; Published: 1 July 2004
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