title: Differential cleavages of disulfide cross-links of protamines in boar sperm nuclei.
abstract: Limiting reduction of boar sperm nuclei revealed that disulfide cross-links of the boar protamines complexed with DNA were classifiable into five groups from the differences in their sensitivity toward the reduction. A feature of cross-linkings in boar sperm chromatin and that of bull is discussed.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D002417:Cattle; D002467:Cell Nucleus / Q000378:metabolism; D004220:Disulfides / Q000378:metabolism*; D008297:Male; D011479:Protamines / Q000378:metabolism*; D013094:Spermatozoa / Q000378:metabolism*
chemical_list: D004220:Disulfides; D011479:Protamines