|Taxonomy Citation ID||Reference|
|5908||Castellani, A., and Chalmers, A.J. Manual of Tropical Medicine, 3rd ed. (1919). Williams Wood and Co., New York. [No PubMed abstract available.]|
|2759||Skerman, V.B.D., McGowan, V., and Sneath, P.H.A. (editors). "Approved lists of bacterial names." Int. J. Syst. Bacteriol. (1980) 30:225-420. [No PubMed record available.]|
|6031||Escherich, T. "Die Darmbakterien des Neugeborenen und Sauglingen" Fortschr. Med. (1885) 3:515-528,547-554. [No PubMed abstract available.]|
|3356||Lapage, S.P., Sneath, P.H.A., Lessel, E.F., Skerman, V.B.D., Seeliger, H.P.R., and Clark, W.A. "International Code of Nomenclature of Bacteria (1990 revision)." American Society for Microbiology, Washington, D.C. (1992). [No PubMed record available.]|
|57711||Wadley, T.D., Jenjaroenpun, P., Wongsurawat, T., Ussery, D.W., and Nookaew, I. "Complete genome and plasmid sequences of Escherichia coli type strain ATCC 11775." Microbiol. Resour. Announc. (2019) 8:e00046-19.||9620||
( 1999 )
Patterns of sequence variation in two regions of the 16S rRNA multigene family of Escherichia coli.
PMID : 10319482 DOI : 10.1099/00207713-49-2-601
Sequence heterogeneities of variable positions located at regions V1 and V6 of 56 cloned 16S rRNA genes were determined from six Escherichia coli strains. These nucleotides were involved in secondary structure base-pairing of stem-loops. Compensatory and single mutations have occurred but secondary structure was conserved. Eight different sequences were found in the stem at region V1 indicating that in these sites mutation rates are higher than those of homogenizatin processes. Region V6 showed two different structures (V6-I and V6-II) although heterogeneities were determined in nine sites. Strains ECOR52 and ECOR56 only showed the V6-I sequence, ECOR35 showed V6-II, whereas clones from ECOR42 and ECOR49 showed both types of V6 structures. Results were confirmed by PCR using V6 sequence-specific probes. Stem V6-II was also found in 16S rRNA sequences deposited in the RDP (Ribosomal Database Project) belonging to distantly related taxa; ancestral sequence V6-II seems to be homogenized in all rrn operons of the multigene family of strain ECOR35 producing effects of distortion in the molecular clock, similar to those that homoplasies could produce. V6 sequence-specific probes were applied to the 72 ECOR strains: half showed both V6-I and V6-II, and the rest had one or another. Only strain ECOR24 did not yield products in the PCR test and sequencing of 12 cloned 16S rRNA genes revealed a third form, V6-III, also found in the RDP. Concerted evolution by homogenization of the rRNA family may induce chronometric distortions responsible for a loss of ultrametricity in phylogenetic trees, particularly, of very closely related micro-organisms.
|5542||Lehman, K.B., and Neumann, R. Atlas und Grundriss der Bakeriologie und Lehrbuch der speziellen bakteriologischen Diagnositk. 1st Ed., (1896) J.F. Lehmann, Munchen. [No PubMed record available.]|
|5730||Migula, W. "Bacteriaceae (Stabchenbacterien)." In: Engler and Prantl (Editors), Die Naturlichen Pflanzenfamilien. (1895) W. Engelmann, Leipzig, Teil I Abt. 1a, pp.20-30. [No PubMed record available.]|