Linked Life Data

10623467

Source:http://linkedlifedata.com/resource/pubmed/id/10623467

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2000-2-24
pubmed:abstractText
In mature sperm the normal nucleosomal packaging of DNA found in somatic and meiotic cells is transformed into a highly condensed form of chromatin which consists mostly of nucleoprotamines. Although sperm DNA is highly condensed it is nevertheless packaged into a highly defined nuclear architecture which may be organized by the heterochromatic chromocenter. One major component of heterochromatin is the heterochromatin protein 1 which is involved in epigenetic gene silencing. In order to investigate the possible involvement of heterochromatin protein in higher order organization of sperm DNA we studied the localization of the murine homologue of heterochromatin protein 1, M31, during chromatin reorganization in male germ cell differentiation. Each cell type in the testis showed a unique distribution pattern of M31. Colocalization to the heterochromatic regions were found in Sertoli cells, in midstage pachytene spermatocytes, and in round spermatids in which M31 localizes to the centromeric chromocenter. M31 cannot be detected in elongated spermatids or mature spermatozoa immunocytologically, but could be detected in mature spermatozoa by Western blotting. We suggest that M31, a nuclear protein involved in the organization of chromatin architecture, is involved in higher order organization of sperm DNA.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0014-4827
pubmed:author
pubmed:copyrightInfo
Copyright 2000 Academic Press.
pubmed:issnType
Print
pubmed:day
10
pubmed:volume
254
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
72-9
pubmed:dateRevised
2005-7-27
pubmed:meshHeading
pubmed:year
2000
pubmed:articleTitle
The murine heterochromatin protein M31 is associated with the chromocenter in round spermatids and Is a component of mature spermatozoa.
pubmed:affiliation
Zoologisches Institut-Entwicklungs-biologie, Universität Göttingen, III, Humboldtallee 34A, 37073, Germany. shoyer@gwdg.de
pubmed:publicationType
Journal Article