Journal
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
Volume 169, Issue -, Pages 600-606Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ecoenv.2018.11.069
Keywords
Cadmium; Mytilus galloprovincialis L.; Metal pollution; Sperm chromatin; Protamine-like proteins; Metal bioaccumulation
Categories
Funding
- [000020 PRD-2017-M-PISCOPO_001_001]
Ask authors/readers for more resources
Protamine-like proteins (PL-II, PL-III and PL-IV) represent the major basic nuclear component of Mytilus galloprovincialis L sperm chromatin. The present study investigates the effects induced on the properties of PL-II protein after exposure of Mytilus galloprovincialis L for 24 h to 1.5 and 5 mu M CdCl2. We found cadmium accumulation in protamine-like proteins with a linear grow up with the exposition dose. In particular, after 5 mu M CdCl2 mussels exposure, the mobility of PL-II band changed in SDS-PAGE, suggesting structural rearrangement in presence of cadmium. Structural analysis using fluorescent probes, indicated that at 5 mu M CdCl2 the complete conformational change of PL-II protein was reached. In the same condition of mussels exposure of 5 mu M CdCl2, PL-II protein changed its DNA binding mode, which determined a closer DNA binding, because higher amount of NaCl were required for PL-II protein release by sperm nuclei. These results supported the hypothesis that mussel exposure to this CdCl2 dose, although lower to toxic ones, affects the properties of this protein and as a consequence chromatin organization of spermatozoa that is essential for the success of fertilization.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available