The University of Tokyo · Biochemistry, Genetics and Molecular Biology
Professor Shuichi Asakawa's research lab specializes in molecular microbiology and mitochondrial genomics, focusing on the genetic characterization of pathogenic bacteria such as *Aeromonas* species in aquatic environments and the evolutionary genomics of mitochondrial DNA in echinoderms. The lab employs molecular techniques like gene sequencing, PCR-RFLP, and fingerprinting to study microbial diversity, pathogenicity, and genome organization. Their work contributes to understanding bacterial taxonomy, host-pathogen interactions in freshwater fish, and the conservation of mitochondrial gene arrangements across animal lineages.
Figures are computed from collected data and may differ slightly.
A total of 74 phenotypically identified presumptive motile Aeromonas isolates recovered from septicaemic freshwater ornamental fish in Sri Lanka were genetically characterized by sequencing of rpoD and gyrB genes. rpoD/gyrB phylogeny confirmed only 53 isolates as Aeromonas, among which A. veronii was the predominant species (79.2%), followed by A. hydrophila (7.5%), A. caviae (5.7%), A. jandaei (1.9%), A. dhakensis (3.8%) and A. entero pelogenes (1.9%). The aeromonads confirmed by sequencing wer
The 16,260-bp mitochondrial DNA (mtDNA) from the starfish Asterina pectinifera has been sequenced. The genes for 13 proteins, two rRNAs and 22 tRNAs are organized in an extremely economical fashion, similar to those of other animal mtDNAs, with some of the genes overlapping each other. The gene organization is the same as that for another echinoderm, sea urchin, except for the inversion of a 4.6-kb segment that contains genes for two proteins, 13 tRNAs and the 16S rRNA. Judging from the organiza
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