Article

Turtle IgD2 preserves an ancestral IgXA-derived XA3–XA4 module in a duplicated and locally remodeled IgD2–IgY constant-region array

2026-07-22

Abstract excerpt

A second IgD gene, IgD2, was first described in the leopard gecko as a hybrid constant-region gene containing IgD-derived exons and terminal IgA-like exons. Related IgD2 architectures have subsequently been recognized in turtles and crocodilians. Here we analyzed Testudines constant-region annotations to determine whether turtle IgD2 represents an intact ancient paralogue or a locally remodeled mosaic gene. Across...

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Literature Corpus work: 98613816-e47a-52f7-a781-ad10f76e4c4a
DOI: 10.64898/2026.07.17.739153

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