Evidence map›Paper›PMID 41512306›Full record

ArticleJournal of animal science2026

Comparative analysis of the organization and complexity of immunoglobulin light chain loci in equids.

Yanbo Qiu, Yichen Lei, Xiaohua Yi, Xiaoqin Tang, Beibei Zhang, Shuhui Wang, Xiuzhu Sun

Abstract readComparative Study
In one paragraph

Article in Journal of animal science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

7 authors.

Yanbo QiuCollege of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China.
Yichen LeiCollege of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China.
Xiaohua YiCollege of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China.
Xiaoqin TangCollege of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China.
Beibei ZhangCollege of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China.
Shuhui WangCollege of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China.ORCID 0000-0001-8344-6259
Xiuzhu SunCollege of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study investigated three donkey breeds-Guanzhong, Jiami, and Northern Shaanxi-to characterize the structural organization and diversification mechanisms of the immunoglobulin light-chain (IgL) loci and to conduct both intra-breed and interspecies comparisons with horses. The donkey IGλ locus is located on chromosome 8 and arranged in a Vλ-(Jλ-Cλ)-Vλ configuration. It contains 7 Cλ genes, each preceded by a corresponding Jλ gene to form a Jλ-Cλ cluster. Upstream of this cluster, 156 Vλ genes were identified, including 29 potential functional genes; downstream, 98 Vλ genes were detected, of which 22 were potentially functional. The IGκ locus resides on chromosome 6 and exhibits a Vκ-Jκ-Cκ structure, comprising one Cκ gene, 5 Jκ genes, and 72 Vκ segments, including 22 potential functional Vκ genes. Expression profiling revealed clear light-chain usage preferences in donkeys. For the λ-chain, Vλ72, Vλ135, Vλ150, Vλ190, and Vλ196-mainly belonging to the IGLV1 and IGLV3 subgroups-were preferentially utilized. For the κ-chain, Vκ67 and Vκ71 were dominantly expressed, highlighting the prominent role of the IGκV4 subgroup. Horses showed a similar pattern, with strong biases toward the IGLV1, IGLV3, and IGκV4 subgroups. Although breed-specific differences were observed in certain IGL expression profiles (e.g. V-J combinations), these variations were largely restricted to the λ-chain and involved low-frequency genes. Thus, highly utilized genes and subgroups exhibit high conservation among donkey breeds. This study is the first to comprehensively elucidate the structure and expression preferences of the donkey IgL locus, laying a solid foundation for the development of donkey-derived antibody resources.

Indexed as

EquidaeGenes, Immunoglobulin Light ChainImmunoglobulin Light ChainsAnimalsGene Expression RegulationHorsesPhylogenySpecies SpecificityImmunoglobulin Light Chainscomparative analysisdonkeyhorseIGκIGλimmunoglobulin

Identifiers

PMID41512306
PMCPMC12906693

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