A putative homeodomain has been identified in eubacterial genomes, which include several pathogens. The domain is related in sequence to homeodomain, a component specific to transcription factors and playing a very important role in eukaryotes such as controlling the developmental processes of the organism. The putative homeodomain has been characterized utilizing the eukaryotic homeodomain protein sequence signature present in PROSITE as well as the sequence similarity search using BLAST suite for different eubacterial genomes. These findings provide evidence for the occurrence of DNA-binding motif in prokarya similar to that in eukarya.
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http://dx.doi.org/10.1016/s0006-291x(02)02607-4 | DOI Listing |
BMC Genomics
November 2024
Department of Biotechnology, Institute of Molecular and Cell Biology, University of Tartu, Tartu, Estonia.
J Fungi (Basel)
September 2024
Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
is a thermally dimorphic fungus that can cause life-threatening systemic mycoses, particularly in immunocompromised individuals. Fungal homeobox transcription factors control various developmental processes, including the regulation of sexual reproduction, morphology, metabolism, and virulence. However, the function of homeobox proteins in has not been fully explored.
View Article and Find Full Text PDFMol Cells
December 2024
Department of Systems Biology, Yonsei University, Seoul 03722, Republic of Korea. Electronic address:
Polycomb group (PcG) proteins play key roles in development by repressing thousands of targets through histone modifications. However, how PcG is recruited to specific targets is poorly understood. In Arabidopsis, certain noncoding RNAs are necessary for recruiting the PcG protein CURLY LEAF (CLF) to its target sites.
View Article and Find Full Text PDFDev Biol
January 2025
University of Lisbon, IST, Dep. of Physics, Nonlinear Dynamics Group, Av. Rovisco Pais, 1049-001, Lisbon, Portugal. Electronic address:
We modelled and calibrated the distributions of the seven-stripe patterns of Even-skipped (Eve) and Fushi-tarazu (Ftz) pair-rule proteins along the anteroposterior axis of the Drosphila embryo, established during early development. We have identified the putative repressive combinations for five Eve enhancers, and we have explored the relationship between Eve and Ftz for complementary patterns. The regulators of Eve and Ftz are stripe-specific DNA enhancers with embryo position-dependent activation rates and are regulated by the gap family of proteins.
View Article and Find Full Text PDFMol Biol Evol
September 2024
Department of Integrative Biology, University of Wisconsin-Madison, Madison, WI, USA.
Neofunctionalization of duplicated gene copies is thought to be an important process underlying the origin of evolutionary novelty and provides an elegant mechanism for the origin of new phenotypic traits. One putative case where a new gene copy has been linked to a novel morphological trait is the origin of the arachnid patella, a taxonomically restricted leg segment. In spiders, the origin of this segment has been linked to the origin of the paralog dachshund-2, suggesting that a new gene facilitated the expression of a new trait.
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