Role of Polyphosphate as an Inorganic Chaperone to Prevent Protein Aggregation Under Copper Stress in .

Polyphosphates are biopolymers composed of phosphate monomers linked by high-energy phosphoanhydride bonds. They are present across all life domains, serving as a source of energy, metal chelators, and playing a crucial role in stress defense. In , polyphosphates also function as inorganic molecular chaperones.

Possible Role of CHAD Proteins in Copper Resistance.

Conserved Histidine Alpha-helical Domain (CHAD) proteins attached to the surface of polyphosphate (PolyP) have been studied in some bacteria and one archaeon. However, the activity of CHAD proteins is unknown beyond their interaction with PolyP granules. By using bioinformatic analysis, we report that several species of the biomining acidophilic bacteria contain orthologs of CHAD proteins with high sequence identity.

Sessile Lifestyle Offers Protection against Copper Stress in .

Some archaea from the genus Sulfolobus are important for bioleaching of copper, where metal resistant microorganisms are required. Biofilm generation is one of the ways microorganisms cope with some stimuli in nature, including heavy metals. The response to external factors, particularly in the biofilm form of life, is still underexplored in archaea.

[Perforation of surgical gloves during cesarean section].

We carried out a prospective study with the object of knowing the frequency of surgical gloves perforation during cesarean section, the member of the surgical team with a major affection and the double gloves importance. We analysed 258 C. section practiced in the Tocosurgery's Service at "Nuevo Hospital Civil de Guadalajara" from September 1993 to January 1994.