PUBLICATION
Cloning and sequence analysis of the beta2-microglobulin transcript from flounder, Paralichthys olivaceous
- Authors
- Choi, W., Lee, E.Y., and Choi, T.J.
- ID
- ZDB-PUB-090225-13
- Date
- 2006
- Source
- Molecular immunology 43(10): 1565-1572 (Journal)
- Registered Authors
- Keywords
- β2-Microglobulin (β2M), Flounder, Leukocyte cDNA library
- MeSH Terms
-
- Animals
- Base Sequence
- Phylogeny
- beta 2-Microglobulin/classification*
- beta 2-Microglobulin/genetics*
- Cloning, Molecular
- Evolution, Molecular
- Flounder/genetics*
- Flounder/immunology*
- Molecular Sequence Data
- Amino Acid Sequence
- Sequence Analysis, DNA
- Gene Expression*
- PubMed
- 16257447 Full text @ Mol. Immunol.
Citation
Choi, W., Lee, E.Y., and Choi, T.J. (2006) Cloning and sequence analysis of the beta2-microglobulin transcript from flounder, Paralichthys olivaceous. Molecular immunology. 43(10):1565-1572.
Abstract
Beta2-microglobulin (beta2M) is a protein found free-form in the serum or on the cell surface non-covalently associated with the alpha-chain of the class I major histocompatibility (MHC-I) complex. The full-length cDNA containing beta2M was cloned from flounder, Paralichthys olivaceous. The transcript consists of 1610 nucleotides (nts), including an open reading frame (ORF) of 384 nts encoding a polypeptide of 128 amino acids. The amino acid sequence of beta2M in flounder is 59, 57, 56, and 48% conserved in catfish, rainbow trout, zebrafish, and humans, respectively. Genomic Southern hybridization suggested the presence of a single copy of beta2M in the flounder genome, and reverse transcription-polymerase chain reaction (RT-PCR) and Northern blot analysis detected the beta2M transcript in the head kidney, spleen, body kidney, liver, and muscle tissues of the flounder. PCR amplification and sequence analysis revealed the lack of an intron in the beta2M gene. The phylogenetic analysis confirmed the evolutionary diversion of the beta2M protein among warm-blooded vertebrates and fish, and the separation between freshwater and seawater fish.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping