restriction of activity

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• Restriction modification system — The restriction modification system (RM system) is used by bacteria, and perhaps other prokaryotic organisms to protect themselves from foreign DNA, such as bacteriophages. This phenomenon was first noticed in the 1950s. Certain bacteria strains… …   Wikipedia

• restriction — re·stric·tion n 1: something that restricts: as a: a regulation that restricts or restrains b: a limitation on the use or enjoyment of property or a facility 2 a: an act of restricting b: the state of being restricted …   Law dictionary

• Restriction enzyme — Glossary Restriction …   Wikipedia

• restriction — 1. The process with which foreign DNA that has been introduced into a prokaryotic cell becomes ineffective. 2. A limitation. asymmetric fetal growth r. normal fetal head size as a result of preferential shunting of blood to b …   Medical dictionary

• Calorie restriction — Calorie restriction, or caloric restriction (CR), aims to improve health and slow the aging process by limiting dietary energy intake. Calorie restriction is a common measure, found in several dietary regimens, including the Okinawa diet [The… …   Wikipedia

• Star activity — is a relaxation or alteration of the specificity of restriction enzyme mediated cleavage of DNA that can occur under reaction conditions that differ significantly from those optimum for the enzyme. The result is typically cleavage at non… …   Wikipedia

• Quantitative structure-activity relationship — (QSAR) is the process by which chemical structure is quantitatively correlated with a well defined process, such as biological activity or chemical reactivity.For example, biological activity can be expressed quantitatively as in the… …   Wikipedia

• Caloric restriction mimetic — Caloric restriction mimetics (CRM) try to mimic the substantial anti aging effects caloric restriction (CR) has on many laboratory animals. In other words, the administration of a CRM results in the same physiological changes seen in CR itself.… …   Wikipedia

• Student Activity Fee — According to the [http://www.naca.org/NACA National Association for Campus Activities] , approximately 70 percent of the colleges and universities in the United States use student activity fees to fund campus groups and programs.Theses fees are… …   Wikipedia

• Star activity — Die Star Aktivität oder star activity beschreibt in der Molekularbiologie die Fähigkeit eines Restriktionsenzyms, unter speziellen Bedingungen an die DNA an anderen als den Standarderkennungssequenzen zu binden und diese zu spalten. Eine Star… …   Deutsch Wikipedia

• Security and safety features new to Windows Vista — There are a number of security and safety features new to Windows Vista, most of which are not available in any prior Microsoft Windows operating system release.Beginning in early 2002 with Microsoft s announcement of their Trustworthy Computing… …   Wikipedia