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Structural overview of T2 phage. T4 is a relatively large virus, at approximately 90 nm wide and 200 nm long (most viruses range from 25 to 200 nm in length). The DNA genome is held in an icosahedral head, also known as a capsid. [9] The T4's tail is hollow so that it can pass its nucleic acid into the cell
Structural model at atomic resolution of bacteriophage T4 [1] The structure of a typical myovirus bacteriophage Anatomy and infection cycle of bacteriophage T4.. A bacteriophage (/ b æ k ˈ t ɪər i oʊ f eɪ dʒ /), also known informally as a phage (/ ˈ f eɪ dʒ /), is a virus that infects and replicates within bacteria and archaea.
This family includes lambda phage lysozyme and Escherichia coli T4 phage endolysin. [8] Lysozyme helps to release mature phage particles from the cell wall by breaking down the peptidoglycan . The enzyme hydrolyses the 1,4-beta linkages between N-acetyl-D-glucosamine and N-acetylmuramic acid in peptidoglycan heteropolymers of prokaryotic cell ...
T4 lysozyme ribbon schematic (from PDB 1LZM) Brian W. Matthews is a biochemist and biophysicist educated at the University of Adelaide, contributor to x-ray crystallographic methodology [4] at the University of Cambridge, and since 1970 at the University of Oregon as Professor of Physics and HHMI investigator in the Institute of Molecular Biology.
T4 phage, a bacteriophage; Thyroxine (T 4), a form of thyroid hormone; the T4 spinal nerve; the fourth thoracic vertebrae of the vertebral column; A non-small cell lung carcinoma staging for a type of tumour; A CD4 + T lymphocyte; T4: an EEG electrode site according to the 10-20 system
LIN involves the antiholin rI protein of T4 (See TC# 1.E.8.1.1). [5] Lysis inhibition is an effective strategy to coordinate lysis timing with phage particle maturation and to exclude other phage. [6] The C-terminal periplasmic domain of T4 holin binds the periplasmic domain of T4 antiholin (RI; 97 aas) which like the holin, spans the membrane ...
Double-stranded DNA phage lysins tend to lie within the 25 to 40 kDa range in terms of size. A notable exception is the streptococcal PlyC endolysin, which is 114 kDa. PlyC is not only the biggest and most potent lysin, but also structurally unique since it is composed of two different gene products, PlyCA and PlyCB, with a ratio of eight PlyCB subunits for each PlyCA in its active conformation.
Due to the unique function of lysozyme in which it can digest the cell wall and causes osmotic shock (burst the cell by suddenly changing solute concentration around the cell and thus the osmotic pressure), lysozyme is commonly used in lab setting to release proteins from bacterium periplasm while the inner membrane remains sealed as vesicles ...