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Top: An ancestral gene duplication produces two paralogs (histone H1.1 and 1.2). A speciation event produces orthologs in the two daughter species (human and chimpanzee). Bottom: in a separate species , a gene has a similar function (histone-like nucleoid-structuring protein) but has a separate evolutionary origin and so is an analog.
Cyclin-dependent kinase 1 also known as CDK1 or cell division cycle protein 2 homolog is a highly conserved protein that functions as a serine/threonine protein kinase, and is a key player in cell cycle regulation. [5]
In the fruitfly Drosophila, irradiation of germ line cells generates double-strand breaks that result in cell cycle arrest and apoptosis. The Drosophila CHEK2 ortholog mnk and the p53 ortholog dp53 are required for much of the cell death observed in early oogenesis when oocyte selection and meiotic recombination occur. [16]
18626 Ensembl ENSG00000179094 ENSMUSG00000020893 UniProt O15534 O35973 RefSeq (mRNA) NM_002616 NM_001159367 NM_011065 RefSeq (protein) NP_002607 NP_001152839 NP_035195 Location (UCSC) Chr 17: 8.14 – 8.16 Mb Chr 11: 68.99 – 69 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Period circadian protein homolog 1 is a protein in humans that is encoded by the PER1 gene. Function The ...
Homology was noticed by Aristotle (c. 350 BC), [1] and was explicitly analysed by Pierre Belon in his 1555 Book of Birds, where he systematically compared the skeletons of birds and humans. The pattern of similarity was interpreted as part of the static great chain of being through the mediaeval and early modern periods: it was not then seen as ...
Whether homologous recombination or NHEJ is used to repair double-strand breaks is largely determined by the phase of cell cycle. Homologous recombination repairs DNA before the cell enters mitosis (M phase). It occurs during and shortly after DNA replication, in the S and G 2 phases of the cell cycle, when sister chromatids are more easily ...
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The paralogs of EVA1C are EVA1A (Eva-1 Homolog A) and EVA1B (Eva-1 Homolog B). [17] [18] The thorny skate (Amblyraja radiata) was found to be the most distant ortholog in EVA1A, EVA1B, and EVA1C. [14] [19] [20] The divergence time of humans and the thorny skate is 464 million years ago. [16]