{Reference Type}: Journal Article {Title}: Identification and functional characterization of a superoxide dismutase (CuZnSOD) from Pinctada fucata martensii. {Author}: Guo Z;Li C;Liang H;Zhu J; {Journal}: Fish Shellfish Immunol {Volume}: 149 {Issue}: 0 {Year}: 2024 Jun 1 {Factor}: 4.622 {DOI}: 10.1016/j.fsi.2024.109599 {Abstract}: Copper/zinc superoxide dismutase (Cu/Zn-SOD) can effectively eliminate reactive oxygen species (ROS),avoid damage from O2 to the body, and maintain O2 balance. In this study, multi-step high-performance liquid chromatography (HPLC), combined with Mass Spectrometry (MS), was used to isolate and identify Cu/Zn-SOD from the serum of Pinctada fucata martensii (P. f. martensii) and was designated as PmECSOD. With a length of 1864 bp and an open reading frame (ORF) of 1422 bp, the cDNA encodes a 473 amino acid protein. The PmECSOD transcript was detected in multiple tissues by quantitative real-time PCR (qRT-PCR), with its highest expression level being in the gills. Additionally, the temporal expression of PmECSOD mRNA in the hemolymph was highest at 48 h after in vivo stimulation with Escherichia coli and Micrococcus luteus. The results from this study provide a valuable base for further exploration of molluscan innate immunity and immune response.