D
Dicread
HomeDictionaryPporin

Note: The translation for this entry is currently under quality review. Some content is temporarily displayed in English only.

porin

porin
Danh từ
Số nhiều: porins

This term is used exclusively within the specialized registers of microbiology, biochemistry, and cell biology. It describes a specific class of transmembrane proteins that act as selective filters, ensuring that the internal environment of a cell or organelle remains stable while allowing necessary small molecules to pass through.

Because it refers to a specific biological structure, it is typically used in technical descriptions of cellular membranes. It is distinct from general "channels" or "pores" by its specific protein composition and its characteristic location in the outer membranes of Gram-negative bacteria and endosymbiotic organelles.

Ý nghĩa

Danh từporin

A protein channel found in the outer membrane of Gram-negative bacteria, mitochondria, and chloroplasts that allows the passive diffusion of hydrophilic molecules.

The researchers studied the structure of the porin proteins to understand how nutrients enter the bacterial cell.

Từ liên quan

channel proteinproteinmembranechannelporelipidbilayerpermeabilitydiffusiontransportcellbacteriagram negativeouter membraneperiplasmmitochondriachloroplastosmosismoleculeionsolutesubstrateselectivityhydrophilichydrophobicamino acidpeptidefoldingstructureconformationtransmembranefluxgradienthomeostasisantibioticresistancepermeaseaquaporincytoplasmorganelleenvelopesecretioneffluxmetabolismenzymebiochemistrymolecular biologycytologymicrobiologyphysiologybiophysicselectrophoresiscrystallographyspectroscopybinding sitecatalysisdiffusion coefficientosmotic pressureturgorcell walllipopolysaccharidepeptidoglycanporosity
Last Updated: July 15, 2026Report an Error