User profiles for K. Janko

Karel Janko

Senior researcher, Institute of Animal Physiology and Genetics
Verified email at iapg.cas.cz
Cited by 2277

Sex chromosomes in meiotic, hemiclonal, clonal and polyploid hybrid vertebrates: along the 'extended speciation continuum'

…, Z Starostová, K Janko - … of the Royal …, 2021 - royalsocietypublishing.org
We review knowledge about the roles of sex chromosomes in vertebrate hybridization and
speciation, exploring a gradient of divergences with increasing reproductive isolation (…

Formation of large, ion-permeable membrane channels by the matrix protein (porin) of Escherichia coli

R Benz, K Janko, W Boos, P Läuger - Biochimica et Biophysica Acta (BBA) …, 1978 - Elsevier
One of the major proteins of the outer membrane of Escherichia coli, the matrix protein (porin),
has been isolated by detergent solubilisation. When the protein is added in …

Ionic selectivity of pores formed by the matrix protein (porin) of Escherichia coli

R Benz, K Janko, P Läuger - Biochimica et Biophysica Acta (BBA) …, 1979 - Elsevier
Incorporation of the matrix protein (porin) from the outer membrane of Escherichia coli into
black lipid films results in the formation of ion-permeable pores with a single-pore …

Rise and persistence of animal polyploidy: evolutionary constraints and potential

L Choleva, K Janko - Cytogenetic and genome research, 2013 - karger.com
The past decade has witnessed a tremendous increase in interest in polyploidy, which may
partly be related to the development of new powerful genetic and genomic tools. These have …

Voltage-induced capacitance relaxation of lipid bilayer membranes Effects of membrane composition

R Benz, K Janko - Biochimica et Biophysica Acta (BBA)-Biomembranes, 1976 - Elsevier
The specific capacity of black lipid membranes of different phospholipids dissolved in n-
alkanes was investigated. The hydrocarbon thickness of these membranes, as calculated from …

Diversity of European spined loaches (genus Cobitis L.): an update of the geographic distribution of the Cobitis taenia hybrid complex with a description of new …

K Janko, M Flajšhans, L Choleva, J Bohlen… - Journal of Fish …, 2007 - Wiley Online Library
Although the unique features of asexual reproduction and hybridization among European
spined loaches (genus Cobitis) have recently attracted the attention of conservation biologists, …

Synthesis of clonality and polyploidy in vertebrate animals by hybridization between two sexual species

L Choleva, K Janko, K De Gelas, J Bohlen… - …, 2012 - academic.oup.com
Because most clonal vertebrates have hybrid genomic constitutions, tight linkages are
assumed among hybridization, clonality, and polyploidy. However, predictions about how these …

European colonization by the spined loach (Cobitis taenia) from Ponto‐Caspian refugia based on mitochondrial DNA variation

MA Culling, K Janko, A Boron, VP VASIL'EV… - Molecular …, 2006 - Wiley Online Library
In the last 20 years, new species, asexual reproduction, polyploidy and hybridization have
all been reported within the genus Cobitis. An understanding of the current distribution and …

Antarctic bdelloid rotifers: diversity, endemism and evolution

…, I Dykyy, M Plewka, M Devetter, Z Duriš, K Janko - Hydrobiologia, 2015 - Springer
Antarctica is an isolated continent whose conditions challenge the survival of living organisms.
High levels of endemism are now known in many Antarctic organisms, including algae, …

Standard Metabolic Rate (SMR) is inversely related to erythrocyte and genome size in allopolyploid fish of the Cobitis taenia hybrid complex

S Maciak, K Janko, J Kotusz, L Choleva… - Functional …, 2011 - Wiley Online Library
As a first approximation, whole‐body metabolic rate can be considered as the sum of
metabolic rates of constituent cells. Yet, among several current explanations of metabolic rate …