Thermal robustness of signaling in bacterial chemotaxis

Olga Oleksiuk, Vladimir Jakovljevic, Nikita Vladimirov, Ricardo Carvalho, Eli Paster, William S. Ryu, Yigal Meir, Ned S. Wingreen, Markus Kollmann, Victor Sourjik

نتاج البحث: نشر في مجلةمقالةمراجعة النظراء

ملخص

Temperature is a global factor that affects the performance of all intracellular networks. Robustness against temperature variations is thus expected to be an essential network property, particularly in organisms without inherent temperature control. Here, we combine experimental analyses with computational modeling to investigate thermal robustness of signaling in chemotaxis of Escherichia coli, a relatively simple and well-established model for systems biology. We show that steady-state and kinetic pathway parameters that are essential for chemotactic performance are indeed temperature- compensated in the entire physiological range. Thermal robustness of steady-state pathway output is ensured at several levels by mutual compensation of temperature effects on activities of individual pathway components. Moreover, the effect of temperature on adaptation kinetics is counterbalanced by preprogrammed temperature dependence of enzyme synthesis and stability to achieve nearly optimal performance at the growth temperature. Similar compensatory mechanisms are expected to ensure thermal robustness in other systems. PaperClip:

اللغة الأصليةإنجليزيّة أمريكيّة
الصفحات (من إلى)312-321
عدد الصفحات10
دوريةCell
مستوى الصوت145
رقم الإصدار2
المعرِّفات الرقمية للأشياء
حالة النشرنُشِر - 15 أبريل 2011

All Science Journal Classification (ASJC) codes

  • !!General Biochemistry, Genetics and Molecular Biology

بصمة

أدرس بدقة موضوعات البحث “Thermal robustness of signaling in bacterial chemotaxis'. فهما يشكلان معًا بصمة فريدة.

قم بذكر هذا