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sigma factor

См. также в других словарях:

  • sigma-factor — sigma factor. См. σ фактор. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Sigma factor — A sigma factor ( sigma; factor) is a prokaryotic transcription initiation factor that enables specific binding of RNA polymerase to gene promoters. Different sigma factors are activated in response to different environmental conditions. Every… …   Wikipedia

  • sigma factor — noun : a detachable polypeptide subunit of RNA polymerase that facilitates the initiation of transcription by recognizing specific DNA promoter sites * * * sigma factor, a protein that stimulates the synthesis of chains of ribonucleic acid: »The… …   Useful english dictionary

  • sigma factor — (= s factor) Initiation factor (86 kD) that binds to E. coli DNA dependent RNA polymerase and promotes attachment to specific initiation sites on DNA. Following attachment, the sigma factor is released …   Dictionary of molecular biology

  • sigma factor — sig·ma factor sig mə n a detachable polypeptide subunit of RNA polymerase that facilitates the initiation of transcription by recognizing specific DNA promoter sites …   Medical dictionary

  • sigma factor — A protein that helps the RNA polymerase core enzyme recognize the promoter at the start of a gene …   Dictionary of microbiology

  • sigma factor — The sub unit of prokaryotic RNA polymerases responsible for the initiation of transcription at specific initiation sequences …   Glossary of Biotechnology

  • Sigma 38 — Sigma factors are bacterial proteins that help control how genes are used (expressed). In particular, sigma factors are used when genes are turned on , eg if a bacterium is growing in a liquid (growth medium) that is poor in food, and a rich food …   Wikipedia

  • Sigma (disambiguation) — Sigma may refer to: * Sigma (Σ, σ, or ς), of the Greek alphabetCompanies: * Sigma TV a television channel in Cyprus * Sigma Company, an Australian company. Its main operations include Pharmaceuticals and Pharmacies * Sigma Corporation, a Japanese …   Wikipedia

  • Factor analysis — is a statistical method used to describe variability among observed, correlated variables in terms of a potentially lower number of unobserved, uncorrelated variables called factors. In other words, it is possible, for example, that variations in …   Wikipedia

  • Sigma Alpha Rho — ΣAP Founded November 18, 1917 West Philadelphia, Pennsylvania Type Religious …   Wikipedia

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