Abstract:
:The reptiles are the last major taxon of jawed vertebrates in which immunoglobulin light chain isotypes have not been well characterized. Using the recently released genome sequencing data, we show in this study that the reptile Anolis carolinensis expresses both lambda and kappa light chain genes. The genomic organization of both gene loci is structurally similar to their respective counterparts in mammals. The identified lambda locus contains three constant region genes each preceded by a joining gene segment, and a total of 37 variable gene segments. In contrast, the kappa locus contains only a single constant region gene, and two joining gene segments with a single family of 14 variable gene segments located upstream. Analysis of junctions of the recombined VJ transcripts reveals a paucity of N and P nucleotides in both expressed lambda and kappa sequences. These results help us to understand the generation of the immunoglobulin repertoire in reptiles and immunoglobulin evolution in vertebrates.
journal_name
Dev Comp Immunoljournal_title
Developmental and comparative immunologyauthors
Wu Q,Wei Z,Yang Z,Wang T,Ren L,Hu X,Meng Q,Guo Y,Zhu Q,Robert J,Hammarström L,Li N,Zhao Ydoi
10.1016/j.dci.2009.12.019subject
Has Abstractpub_date
2010-05-01 00:00:00pages
579-89issue
5eissn
0145-305Xissn
1879-0089pii
S0145-305X(10)00003-0journal_volume
34pub_type
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