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Immunoglobulin heavy-chain loci in ancient allotetraploid goldfish.

Linmei Han | Jihong Li | Wen Wang | Kaikun Luo | Mingli Chai | Caixia Xiang | Ziye Luo | Li Ren | Qianhong Gu | Min Tao | Chun Zhang | Jing Wang | Shaojun Liu
Developmental and comparative immunology | 2022

As an ancient allotetraploid species, goldfish (Carassius auratus) have two sets of subgenomes. In this study, immunoglobulin heavy-chain (IGH) genes were cloned from the red crucian carp (Carassius auratus red var.), and the corresponding loci were identified in the gynogenetic diploid red crucian carp (GRCC) genome as well as the genomes of three other goldfish strains (Wakin, G-12, and CaTCV-1). Examination showed that each goldfish strain possessed two sets of parallel IGH loci: a complete IGHA locus and a degenerated IGHB locus that was nearly 40 × smaller. In the IGHA locus, multiple τ chain loci were arranged in tandem between the μ&δ chain locus and the variable genes, but no τ-like genes were found in the IGHB locus.

Pubmed ID: 35718131

Research resources used in this publication

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NetNGlyc (tool)

RRID:SCR_001570

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RRID:SCR_002873

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RRID:SCR_003457

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RRID:SCR_012067

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