Results 71 to 80 of about 1,730 (164)

DNA Content and Fragmentation of the Egg Nucleus of Trichoplax adhaerens

Zeitschrift für Naturforschung C, 1981
Abstract Under culture conditions the egg nucleus of Trichoplax adhaerens reaches an unusually high and variable DNA content. Before the "fertilization membrane" is formed, the nucleus undergoes fragmentation. It is assumed that culture conditions differ from natural conditions by preventing the switch-over from the S-phase to the G 2 ...
A. Ruthmann, K. G. Grell, G. Benwitz
openaire   +1 more source

Features of a novel protein, rusticalin, from the ascidian Styela rustica reveal ancestral horizontal gene transfer event

Mobile DNA, 2019
Background The transfer of genetic material from non-parent organisms is called horizontal gene transfer (HGT). One of the most conclusive cases of HGT in metazoans was previously described for the cellulose synthase gene in ascidians.
Maria A. Daugavet, Sergey Shabelnikov, Alexander Shumeev, Tatiana Shaposhnikova, Leonid S. Adonin, Olga Podgornaya   +5 more
doaj   +1 more source

From tumors to species: a SCANDAL hypothesis

Biology Direct, 2019
Some tumor cells can evolve into transmissible parasites. Notable examples include the Tasmanian devil facial tumor disease, the canine transmissible venereal tumor and transmissible cancers of mollusks.
A. Y. Panchin, V. V. Aleoshin, Y. V. Panchin   +2 more
doaj   +1 more source

A conserved cluster of three PRD-class homeobox genes (homeobrain, rx and orthopedia) in the Cnidaria and Protostomia

EvoDevo, 2010
Background Homeobox genes are a superclass of transcription factors with diverse developmental regulatory functions, which are found in plants, fungi and animals.
Mazza Maureen E, Pang Kevin, Reitzel Adam M, Martindale Mark Q, Finnerty John R   +4 more
doaj   +1 more source

Evolution of selenoproteins in the metazoan

BMC Genomics, 2012
Background The selenocysteine (Sec) containing proteins, selenoproteins, are an important group of proteins present throughout all 3 kingdoms of life.
Jiang Liang, Ni Jiazuan, Liu Qiong
doaj   +1 more source

Characterizing the evolution and potential function of eleven horizontally transferred genes in amphioxus

Communications Biology
Horizontal gene transfer (HGT) is the important driver for biological evolution. To date, most of the studies on HGT have focused on prokaryotes, and the HGTs involving eukaryotes are less investigated, especially for HGTs occurring in chordates. In this
Yunpeng Cao, Xiaoqi Liu, Fei Ma, Jiayong Zhang, Ping Jin   +4 more
doaj   +1 more source

apex Mk.2/Mk.3: Secure Live Transmission of the First Flight of Trichoplax adhaerens in Space Based on Components Off-the-Shelf

Eng
After the successful flight of the first Advanced Processors, Encryption, and Security Experiment (apex) Commercial Off-the-Shelf (COTS) On-Board Computer (OBC) during the Propulsion Technologies and Components of Launcher Stages (ATEK)/Material Physics ...
Nico Maas, Jean-Pierre de Vera, Moritz Jonathan Schmidt, Pia Reimann, Jason G. Randall, Sebastian Feles, Ruth Hemmersbach, Bernd Schierwater, Jens Hauslage   +8 more
doaj   +1 more source

A Tale of Two Drug Targets: The Evolutionary History of BACE1 and BACE2

Frontiers in Genetics, 2013
The beta amyloid (APP) cleaving enzyme (BACE1) has been a drug target for Alzheimer's Disease (AD) since 1999 with lead inhibitors now entering clinical trials.
Christopher eSouthan, John eHancock
doaj   +1 more source

The backbone of the post-synaptic density originated in a unicellular ancestor of choanoflagellates and metazoans

BMC Evolutionary Biology, 2010
Background Comparative genomics of the early diverging metazoan lineages and of their unicellular sister-groups opens new window to reconstructing the genetic changes which preceded or accompanied the evolution of multicellular body plans.
Manuel Michaël, Alié Alexandre
doaj   +1 more source

Emergence, development and diversification of the TGF-β signalling pathway within the animal kingdom

BMC Evolutionary Biology, 2009
Background The question of how genomic processes, such as gene duplication, give rise to co-ordinated organismal properties, such as emergence of new body plans, organs and lifestyles, is of importance in developmental and evolutionary biology.
Moustakas Aristidis, Freilich Shiri, Goldovsky Leon, Huminiecki Lukasz, Ouzounis Christos, Heldin Carl-Henrik   +5 more
doaj   +1 more source