Unique Core Histone Protein, Macroh2a

Abstract

We are studying a unique core histone protein called macroH2A discovered in this laboratory. MacroH2A has a chimeric structure consisting of a region that closely resembles a full length histone H2A linked to a large nonhistone region. We examine the distribution of macroH2A in the nucleus of mammalian cells by confocal immunofluorescence microscopy using antibodies directed against the nonhistone region, and find two types of nuclear staining: large """"""""blobs"""""""" and """"""""speckles."""""""" By double labeling, we show that the distribution of macroH2A differs significantly fjrom that of DNA as well as nucleosomes in general, and that the blobs are not nucleolar. 8-31-96

Funding Agency

• Agency: National Institute of Health (NIH)
• Institute: National Center for Research Resources (NCRR)
• Type: Biotechnology Resource Grants (P41)
• Project #: 5P41RR002483-10S1
• Application #: 2556274
• Budget Start: 1996-10-01
• Budget End: 1997-09-30
• Support Year: 10
• Fiscal Year: 1997

Institution

• Name: University of Pennsylvania
• DUNS #: 042250712
• City: Philadelphia
• State: PA
• Country: United States
• Zip Code: 19104

Publications

Deng, Manqi; Williams, Carmen J; Schultz, Richard M (2005) Role of MAP kinase and myosin light chain kinase in chromosome-induced development of mouse egg polarity. Dev Biol 278:358-66

Tutuncu, Levent; Stein, Paula; Ord, Teri S et al. (2004) Calreticulin on the mouse egg surface mediates transmembrane signaling linked to cell cycle resumption. Dev Biol 270:246-60

Brown, Rebecca L; August, Shelley L; Williams, Carmen J et al. (2003) AKAP7gamma is a nuclear RI-binding AKAP. Biochem Biophys Res Commun 306:394-401

Deng, Manqi; Kishikawa, Hidefumi; Yanagimachi, Ryuzo et al. (2003) Chromatin-mediated cortical granule redistribution is responsible for the formation of the cortical granule-free domain in mouse eggs. Dev Biol 257:166-76

Brown, Rebecca L; Ord, Teri; Moss, Stuart B et al. (2002) A-kinase anchor proteins as potential regulators of protein kinase A function in oocytes. Biol Reprod 67:981-7

Li, J; Zhu, X; Ashton, F T et al. (2001) Sensory neuroanatomy of a passively ingested nematode parasite, Haemonchus contortus: amphidial neurons of the third-stage larva. J Parasitol 87:65-72

Robson, P; Stein, P; Zhou, B et al. (2001) Inner cell mass-specific expression of a cell adhesion molecule (PECAM-1/CD31) in the mouse blastocyst. Dev Biol 234:317-29

Travis, A J; Merdiushev, T; Vargas, L A et al. (2001) Expression and localization of caveolin-1, and the presence of membrane rafts, in mouse and Guinea pig spermatozoa. Dev Biol 240:599-610

Stein, P; Schultz, R M (2000) Initiation of a chromatin-based transcriptionally repressive state in the preimplantation mouse embryo: lack of a primary role for expression of somatic histone H1. Mol Reprod Dev 55:241-8

Li, J; Ashton, F T; Gamble, H R et al. (2000) Sensory neuroanatomy of a passively ingested nematode parasite, Haemonchus contortus: amphidial neurons of the first stage larva. J Comp Neurol 417:299-314