Results 21 to 30 of about 1,973,836 (223)

Histone modifications during tobacco male meiosis

Biologia Plantarum, 2019
The special and temporal distribution of several posttranslational histone modifications (H3K4me2, H3K4me3, H3K9me2, H3K27me2, H3K9ac, H3K14ac, H3K18ac, H3K27ac, H3S10ph, H3S28ph, H3T3ph, H3K4me1-H3T3ph, H3K4me3/H3T3ph H3T11ph, H2AT121ph, and H2A.XS139ph)
S. MURSALIMOV, E. DEINEKO, A. HOUBEN, D. DEMIDOV   +3 more
doaj   +1 more source

Serial Block-Face Scanning Electron Microscopy Reveals That Intercellular Nuclear Migration Occurs in Most Normal Tobacco Male Meiocytes

Frontiers in Plant Science, 2021
Serial block-face scanning electron microscopy (SBF-SEM) was used here to study tobacco male meiosis. Three-dimensional ultrastructural analyses revealed that intercellular nuclear migration (INM) occurs in 90–100% of tobacco meiocytes.
Sergey Mursalimov, Nobuhiko Ohno, Nobuhiko Ohno, Mami Matsumoto, Sergey Bayborodin, Elena Deineko   +5 more
doaj   +1 more source

On the origin of crossover interference : a chromosome oscillatory movement (COM) model [PDF]

, 2011
Background: It is now nearly a century since it was first discovered that crossovers between homologous parental chromosomes, originating at the Prophase stage of Meiosis I, are not randomly placed.
Maj A Hultén, Hultén, Maj A., Hultén Maj A   +2 more
core   +1 more source

Transcriptomics of Meiosis in the Male Mouse

Frontiers in Cell and Developmental Biology, 2021
Molecular studies of meiosis in mammals have been long relegated due to some intrinsic obstacles, namely the impossibility to reproduce the process in vitro, and the difficulty to obtain highly pure isolated cells of the different meiotic stages.
Adriana Geisinger, Adriana Geisinger, Rosana Rodríguez-Casuriaga, Ricardo Benavente   +3 more
doaj   +1 more source

Chiasmate male meiosis in six species of water bugs from infraorders Nepomorpha and Gerromorpha (Insecta: Heteroptera)

Comparative Cytogenetics, 2009
The type of male meiosis is a stable character at the family level in the order Heteroptera and provides additional information on the relationships between taxa.
Snejana Grozeva, Seppo Nokkala, Nikolay Simov   +2 more
doaj   +1 more source

The Mammalian Spermatogenesis Single-Cell Transcriptome, from Spermatogonial Stem Cells to Spermatids

Cell Reports, 2018
Summary: Spermatogenesis is a complex and dynamic cellular differentiation process critical to male reproduction and sustained by spermatogonial stem cells (SSCs).
Brian P. Hermann, Keren Cheng, Anukriti Singh, Lorena Roa-De La Cruz, Kazadi N. Mutoji, I-Chung Chen, Heidi Gildersleeve, Jake D. Lehle, Max Mayo, Birgit Westernströer, Nathan C. Law, Melissa J. Oatley, Ellen K. Velte, Bryan A. Niedenberger, Danielle Fritze, Sherman Silber, Christopher B. Geyer, Jon M. Oatley, John R. McCarrey   +18 more
doaj   +1 more source

Regulation of meiotic entry and gonadal sex differentiation in the human: normal and disrupted signaling

Biomolecular Concepts, 2014
Meiosis is a unique type of cell division that is performed only by germ cells to form haploid gametes. The switch from mitosis to meiosis exhibits a distinct sex-specific difference in timing, with female germ cells entering meiosis during fetal ...
Jørgensen Anne, Rajpert-De Meyts Ewa
doaj   +1 more source

CDK-dependent nuclear localization of B-Cyclin Clb1 promotes FEAR activation during meiosis I in budding yeast [PDF]

, 2013
Cyclin-dependent kinases (CDK) are master regulators of the cell cycle in eukaryotes. CDK activity is regulated by the presence, post-translational modification and spatial localization of its regulatory subunit cyclin.
Sarkar, S. (Sourav), Sourav Sarkar, Novák, Béla, Tibbles, Katherine L., Prakash Arumugam, Arumugam P., Bela Novak (5648875), Sarkar S., Arumugam Prakash, Arumugam, Prakash, Sourav Sarkar (430861), Katherine Louise Tibbles (478963), Katherine Louise Tibbles, Bela Novak, Sarkar Sourav, Novak Bela, Tibbles Katherine Louise, Prakash Arumugam (303310), Tibbles K.L., Novak B.   +19 more
core   +2 more sources

On the origin of trisomy 21 Down syndrome [PDF]

, 2008
Background: Down syndrome, characterized by an extra chromosome 21 is the most common genetic cause for congenital malformations and learning disability.
Nikos Papadogiannakis, Maj A Hultén, Papadogiannakis, Nikos, Westgren, Magnus, Jonsson, Anna Maria, Tankimanova, Maira, Patel, Suketu D., Iwarsson, Erik, Maira Tankimanova, Anna Jonsson, Magnus Westgren, Erik Iwarsson, Hultén, Maj A., Suketu D Patel   +13 more
core   +1 more source

The Drosophila Citrate Lyase Is Required for Cell Division during Spermatogenesis

Cells, 2020
The Drosophila melanogaster DmATPCL gene encodes for the human ATP Citrate Lyase (ACL) ortholog, a metabolic enzyme that from citrate generates glucose-derived Acetyl-CoA, which fuels central biochemical reactions such as the synthesis of fatty acids ...
Maria Laura Di Giorgio, Patrizia Morciano, Elisabetta Bucciarelli, Antonella Porrazzo, Francesca Cipressa, Sara Saraniero, Diana Manzi, Yikang S. Rong, Giovanni Cenci   +8 more
doaj   +1 more source