Canadian Medical Guide > Chemicals and Drugs > Amino Acids, Peptides, and Proteins > Proteins > Bacterial Proteins Terms and Definitions




Bacterial Proteins

Medical Definition: Proteins found in any species of bacterium.
Guide Notes: /drug eff /ultrastruct permitted; /physiol permitted for function within the bacterium; coord IM with specific protein (IM) + specific bacterium (IM); BACTERIAL OUTER MEMBRANE PROTEINS is also available; DF: BACT PROTEINS
Bacterial Proteins Categories.
Canadian Medical Guide Definition Azurin - A bacterial protein from Pseudomonas, Bordetella, or Alcaligenes which operates as an electron transfer unit associated with the cytochrome chain. The protein has a molecular weight of approximately 16,000, contains a single copper atom, is intensively blue, and has a fluorescence emission band centered at 308nm.
Canadian Medical Guide Definition Bacterial Outer Membrane Proteins - Proteins isolated from the outer membrane of Gram-negative bacteria.
Canadian Medical Guide Definition Bacteriocins - Substances elaborated by specific strains of bacteria that are lethal against other strains of the same or related species. They are protein or lipopolysaccharide-protein complexes used in taxonomy studies of bacteria.
Canadian Medical Guide Definition Colicins - Bacteriocins elaborated by strains of Escherichia coli and related species. They are proteins or protein-lipopolysaccharide complexes lethal to other strains of the same species.
Canadian Medical Guide Definition Escherichia coli Proteins - Proteins obtained from ESCHERICHIA COLI.
Canadian Medical Guide Definition Factor For Inversion Stimulation Protein - A highly abundant DNA binding protein whose expression is strongly correlated with the growth phase of bacteria. The protein plays role in regulating DNA topology and activation of ribosomal RNA transcription. It was originally identified as a factor required for inversion stimulation by the Hin recombinase of SALMONELLA and Gin site-specific recombinase of BACTERIOPHAGE MU.
Canadian Medical Guide Definition Ferredoxins - Iron-containing proteins that transfer electrons, usually at a low potential, to flavoproteins; the iron is not present as in heme. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)
Canadian Medical Guide Definition Flagellin - A protein with a molecular weight of 40,000 isolated from bacterial flagella. At appropriate pH and salt concentration, three flagellin monomers can spontaneously reaggregate to form structures which appear identical to intact flagella.
Canadian Medical Guide Definition Flavodoxin - A low-molecular-weight (16,000) iron-free flavoprotein containing one molecule of flavin mononucleotide (FMN) and isolated from bacteria grown on an iron-deficient medium. It can replace ferredoxin in all the electron-transfer functions in which the latter is known to serve in bacterial cells.
Canadian Medical Guide Definition GroEL Protein - A chaperonin 60 heat-shock protein isolated from Escherichia coli.
Canadian Medical Guide Definition GroES Protein - A chaperonin 10 heat-shock protein isolated from Escherichia coli.
Canadian Medical Guide Definition Integration Host Factors - Bacterial proteins that are used by BACTERIOPHAGES to incorporate their DNA into the DNA of the "host" bacteria. They are DNA-binding proteins that function in genetic recombination as well as in transcriptional and translational regulation.
Canadian Medical Guide Definition Staphylococcal Protein A - A protein present in the cell wall of most Staphylococcus aureus strains. The protein selectively binds to the Fc region of human normal and myeloma-derived IMMUNOGLOBULIN G. It elicits antibody activity and may cause hypersensitivity reactions due to histamine release; has also been used as cell surface antigen marker and in the clinical assessment of B lymphocyte function.
Canadian Medical Guide Definition Streptavidin - A 60kD extracellular protein of Streptomyces avidinii with four high-affinity biotin binding sites. Unlike AVIDIN, streptavidin has a near neutral isoelectric point and is free of carbohydrate side chains.
Canadian Medical Guide Definition Zinostatin - An antitumor isolate from the culture filtrate of the F-41 variant of Streptomyces carzinostaticus. It is a protein of known amino acid sequence with a molecular weight of approximately 11,500 and possessing a regulatory function on the metabolism of DNA. In this process, that is first an inhibition of DNA biosynthesis followed by the degradation of DNA, zinostatin functions in a manner analogous to that of the much higher molecular weight antibiotic MITOMYCIN. Zinostatin is also a potent cytostatic agent active against gram-positive organisms.

Bacterial Proteins Medical Definitions and Terms

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