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In a 1945 study by Demerec and Fano, [4] T7 was used to describe one of the seven phage types (T1 to T7) that grow lytically on Escherichia coli. [5] Although all seven phages were numbered arbitrarily, phages with odd numbers, or T-odd phages, were later discovered to share morphological and biochemical features that distinguish them from T-even phages. [6]
Italiano: Rappresentazione schematica della struttura del fago T7. Español: Representación esquemática de la estructura del fago T7. Français : Représentation schématique de la structure de la phage T7.
Enterobacteria phage T6; Escherichia virus T3; ... T7 DNA polymerase; T7 phage; T7 RNA polymerase This page was last edited on 12 June 2024, at 18:27 (UTC). ...
In biotechnology applications, T7 RNA polymerase is commonly used to transcribe DNA that has been cloned into vectors that have two (different) phage promoters (e.g., T7 and T3, or T7 and SP6) in opposite orientation. RNA can be selectively synthesized from either strand of the insert DNA with the different polymerases.
(This polymerase originates from the T7 phage, a bacteriophage virus which infects E. coli bacterial cells and is capable of integrating its DNA into the host DNA, as well as overriding its cellular machinery to produce more copies of itself.) T7 RNA polymerase is responsible for beginning transcription at the T7 promoter of the transformed vector.
Teseptimavirus (synonyms T7 phage group, T7-like phages, T7-like viruses, T7likevirus) is a genus of viruses in the order Caudovirales, in the family Autographiviridae, in the subfamily Studiervirinae. Bacteria serve as the natural host, with transmission achieved through passive diffusion.
“Phage cocktails” are a form of phage therapy that involves employing at least two phages to target a single bacterial strain, [13] creating a form of therapy with greater ‘depth.’ Phage cocktails are an effective substitute for antibiotics as they create a broader host range and delay the development of phage resistance in bacteria. [ 14 ]
T7 DNA helicase (gp4) is a hexameric motor protein encoded by T7 phages that uses energy from dTTP hydrolysis to process unidirectionally along single stranded DNA, separating the two strands as it progresses. It is also a primase, making short stretches of RNA that initiates DNA synthesis. [2] It forms a complex with T7 DNA polymerase.