Characterization of different expression patterns of calsarcin-1 and calsarcin-2 in porcine muscle.
Calsarcins comprise a novel family of muscle-specific calcineurin-interacting proteins and play an important role in modulating both the function and substrate specificity of calcineurin in muscle cells. In this study, we cloned and characterized calsarcins from pig muscle. The deduced amino acid sequences of porcine calsarcin-1 (CS-1), calsarcin-2 (CS-2), and calsarcin-3 (CS-3) share the same putative calcineurin and alpha-actinin binding regions. Radiation hybrid mapping data indicate that CS-1 and CS-2 map to q2.1-2.5 of pig chromosome 8 (SSC8) and q2.4 of pig chromosome 14 (SSC14), respectively. The mRNA expressions of both CS-1 and CS-2 are regulated in skeletal muscle similarly during postnatal development but not during prenatal development, indicating differences in function, additionally demonstrated by minute differences in cellular localization within Pig Kidney Epithelial cells (PK15). We provide the first evidence that CS-1 is abundantly expressed in porcine heart and has an expression pattern similar to the human gene. This result suggests that the pig may be a suitable animal model to study the function of calsarcins in human heart disease.
Department of Gene and Cell Engineering, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100094, PR China.
Heng
H
Wang
Zhengmao
Z
Zhu
Huanling
H
Wang
Shulin
S
Yang
Delin
D
Mo
Kui
K
Li
D000595:Amino Acid Sequence; D000818:Animals; D002352:Carrier Proteins / Q000235:genetics / Q000378:metabolism; D033481:Chromosomes, Mammalian; D017124:Conserved Sequence; D004622:Embryo, Mammalian / Q000033:anatomy & histology; D005260:Female; D015870:Gene Expression / Q000502:physiology*; D005787:Gene Frequency; D008969:Molecular Sequence Data; D018485:Muscle Fibers, Skeletal / Q000378:metabolism; D009124:Muscle Proteins / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism*; D018482:Muscle, Skeletal / Q000378:metabolism*; D009154:Mutation; D010802:Phylogeny; D020641:Polymorphism, Single Nucleotide; D011247:Pregnancy; D012333:RNA, Messenger / Q000378:metabolism; D021101:Radiation Hybrid Mapping; D017422:Sequence Analysis, DNA; D017386:Sequence Homology, Amino Acid; D034421:Sus scrofa / Q000033:anatomy & histology*
D002352:Carrier Proteins; D009124:Muscle Proteins; D012333:RNA, Messenger