Results 111 to 120 of about 57,771 (301)

Rabl's model of the interphase chromosome arrangement tested in Chinise hamster cells by premature chromosome condensation and laser-UV-microbeam experiments [PDF]

, 1982
In 1885 Carl Rabl published his theory on the internal structure of the interphase nucleus. We have tested two predictions of this theory in fibroblasts grown in vitro from a female Chinese hamster, namely (1) the Rabl-orientation of interphase ...
C Cremer, C Cremer, C Cremer, C Cremer, C Cremer, C Rabl, C Zorn, C Zorn, C. Cremer, C. Zorn, DE Comings, DE Comings, DM Pardoll, E. K. Luedtke, F Vogel, H Hoehn, H Zankl, H. Baumann, K Sperling, K Sperling, K Sperling, K. Sperling, KD Zang, L Avivi, L Hens, M Kirsch-Volders, M Kirsch-Volders, R Berezney, T Cremer, T. Cremer, Th Boveri, Th Boveri, V. Teuber, W Schnedl, Y Moroi   +34 more
core   +1 more source

Transcription Factor TCF12‐Mediated Maternal Gene Expressions in Mouse Oocyte Are Prerequisites of Successful Fertilisation and Zygotic Genome Activation

Cell Proliferation, EarlyView.
Maternal TCF12 ensures the competence of fertilisation by controlling the expression of Astl and the proper location of cortical granules. Furthermore, maternal TCF12 maintains the phosphatase activity of PP2A by regulating the expression of Arpp19. Oocyte‐specific deletion of Tcf12 leads to fertilisation defects as well as ZGA failure at the 2‐cell ...
Lan‐Rui Cao, Chi Zhang, Zuo‐Qi Deng, Yue‐xin Qiu, Zhao Zhang, Heng‐Yu Fan, Jing Li, Hong‐Bo Wu   +7 more
wiley   +1 more source

The Phosphatase Dusp7 Drives Meiotic Resumption and Chromosome Alignment in Mouse Oocytes

Cell Reports, 2016
Summary: Mammalian oocytes are stored in the ovary, where they are arrested in prophase for prolonged periods. The mechanisms that abrogate the prophase arrest in mammalian oocytes and reinitiate meiosis are not well understood.
Thomas Tischer, Melina Schuh
doaj   +1 more source

SOX30 Governs Synaptonemal Complex Assembly and Homologous Recombination in Male Meiosis

Cell Proliferation, EarlyView.
The transcription factor SOX30 directly binds promoter regions of SYCE1 and SYCE2 to mediate their transcriptional activation, thereby enabling proper assembly of central elements within the synaptonemal complex. Structural destabilisation of the synaptonemal complex in Sox30 KK spermatocytes triggers synaptic discontinuity, impairs homologous ...
Kangle Liu, Wenfeng Zhang, Xiao Jiang, Jianping Chen, Lei Zhu, Zhonghao Zhang, Jing Gu, Lulu Guo, Lin Ao, Qing Chen, Lei Sun, Yuhan Hu, Xin Wang, Yaxin Liu, Jia Cao, Fei Han, Jinyi Liu   +16 more
wiley   +1 more source

An Alternatively Spliced Bifunctional Localization Signal Reprograms Human Shugoshin 1 to Protect Centrosomal Instead of Centromeric Cohesin

Cell Reports, 2015
Separation of human sister chromatids involves the removal of DNA embracing cohesin ring complexes. Ring opening occurs by prophase-pathway-dependent phosphorylation and separase-mediated cleavage, with the former being antagonized at centromeres by Sgo1-
Lisa Mohr, Johannes Buheitel, Laura Schöckel, Dorothea Karalus, Bernd Mayer, Olaf Stemmann   +5 more
doaj   +1 more source

The meiosis-specific Cdc20 family-member Ama1 promotes binding of the Ssp2 activator to the Smk1 MAP kinase. [PDF]

, 2018
Smk1 is a meiosis-specific MAP kinase (MAPK) in budding yeast that is required for spore formation. It is localized to prospore membranes (PSMs), the structures that engulf haploid cells during meiosis II (MII).
Diamond, Aviva, Neiman, Aaron M., Omerza, Gregory, Philips, Timothy, Tio, Chong Wai, Winter, Edward   +5 more
core   +3 more sources

New insights into the putative XX/XY sex chromosomal system in blue‐eyed red‐fin pleco Hypostomus soniae (Siluriformes, Loricariidae)

Journal of Fish Biology, EarlyView.
Abstract Blue‐eyed red‐fin pleco Hypostomus soniae (family Loricariidae) presented a putative sex system XX/XY in early stage. Aiming to explore the inter‐populational karyotypic variation and proposed emergence of the XX/XY system, we studied 13 H. soniae individuals (6 males, 7 females) from the Tapajós River.
Luan Aércio Melo Maciel, Renata Coelho Rodrigues Noronha, Bruno Rafael Ribeiro de Almeida, Manoella Gemaque Cavalcante, Cleusa Yoshiko Nagamachi, Julio Cesar Pieczarka, Luís Reginaldo R. Rodrigues   +6 more
wiley   +1 more source

Detection of chromosome aberrations in metaphase and interphase tumor cells by in situ hybridization using chromosome-specific library probes [PDF]

, 1988
Chromosome aberrations in two glioma cell lines were analyzed using biotinylated DNA library probes that specifically decorate chromosomes 1, 4, 7, 18 and 22 from pter to qter.
A Al-Saadi, AG Knudson, B Trask, CD Bloomfield, D Pinkel, D. C. Ward, F Mitelman, G Rappold, GM Brodeur, GT Merlino, H Harris, H Yamazaki, HE McDermid, J Burns, J. Borden, JA Rey, JE Landegent, JR Shapiro, JS Waye, L Larizza, L Manuelidis, L Manuelidis, L Manuelidis, L. Manuelidis, LC Showe, M Schardin, MF Hansen, NB Atkin, P Lichter, P. Lichter, SH Bigner, SH Bigner, SH Bigner, T Boveri, T Cremer, T Cremer, T. Cremer, TA Libermann, W Henn   +38 more
core   +1 more source

A novel, PCP‐dependent tissue organising principle coordinating morphogenesis between embryonic skin epidermal layers

Journal of Anatomy, EarlyView.
‘Outside‐in’ expression of Fz6 across multiple layers of mouse embryo epidermis is connected to Fz6 asymmetry in the basal layer plane. Fz6 loss‐of‐function correlated with failure to: coordinate axial bias of cell long axis orientation across epidermal layers, switch axial cell long axis orientation during suprabasal layer development and establish ...
C. J. Formstone
wiley   +1 more source

The conserved ATPase PCH-2 controls the number and distribution of crossovers by antagonizing their formation in Caenorhabditis elegans

eLife
Meiotic crossover recombination is essential for both accurate chromosome segregation and the generation of new haplotypes for natural selection to act upon. This requirement is known as crossover assurance and is one example of crossover control.
Bhumil Patel, Maryke Grobler, Alberto Herrera, Elias Logari, Valery Ortiz, Needhi Bhalla   +5 more
doaj   +1 more source