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| Harwani,Dharmesh. |
| Bacteria have evolved various mechanisms to extract utilizable substrates from available resources and consequently acquire fitness advantage over competitors. One of the strategies is the exploitation of cryptic cellular functions encoded by genetic systems that are silent under laboratory conditions, such as the bgl (β-glucoside) operon of E. coli. The bgl operon of Escherichia coli, involved in the uptake and utilization of aromatic β-glucosides salicin and arbutin, is maintained in a silent state in the wild type organism by the presence of structural elements in the regulatory region. This operon can be activated by mutations that disrupt these negative elements. The fact that the silent bgl operon is retained without accumulating deleterious... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cryptic; Bgl operon; Beta-gluosides; GASP. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000400003 |
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| Deepak, V.; Giri, V.B.; Asif, M.; Dutta, S.K.; Vyas, R.; Zambre, A.M.; Bhosale, H.; Karanth, K.P.. |
| We revise the taxonomy of the agamid genus Sitana Cuvier, 1829, a widely distributed terrestrial lizard from the Indian subcontinent based on detailed comparative analyses of external morphology, osteology and molecular data. We sampled 81 locations spread over 160,000 km2 in Peninsular India including type localities, which represented two known and five previously undescribed species. Based on general similarity in body shape and dewlap all species were hitherto identified as members of the genus Sitana. However, Sitana deccanensis and two other morphotypes, which are endemic to north Karnataka and Maharashtra in Peninsular India, are very distinct from the rest of the known members of the genus Sitana based on their external morphology and osteology.... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cryptic; Dewlap; Genetics; Morphology; Osteology; Taxonomy. |
| Ano: 2016 |
URL: http://www.repository.naturalis.nl/record/607663 |
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