Cloning and characterization of a novel intronless lactate dehydrogenase gene in human testis
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- Published online on: June 1, 2005 https://doi.org/10.3892/ijmm.15.6.949
- Pages: 949-953
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Abstract
Using cDNA microarray hybridization from a human testicular cDNA library, one gene named lactate dehydrogenase A-like gene (LDHL, also known as LDHL6B) was cloned. LDHL exhibited 3.8-fold difference at expression level between adult and fetal human testes. The full cDNA length of LDHL is 1680 bp and had a 1145 bp open reading frame, which encoded a 41.9 kDa protein of 381 amino acids. Sequence analysis showed that LDHL harbors all the domains (one lactate/malate dehydrogenase, NAD binding domain and one lactate/malate dehydrogenase, α/β C-terminal domain) in lactate dehydrogenase gene family. Blasting human genome database localized LDHL to human chromosome 15q22.2 and it was an intronless gene. Results of multiple-tissue PCR and real-time PCR showed that LDHL expressed mainly in testis and its mRNA abundance was testis development- related. In summary, LDHL is believed to be involved in testis development and spermatogenesis.