Proteins denature under heat stress. This denaturation of proteins causes the transcription of heat shock proteins (HSPs) to deal with the problem. The production of HSPs is rapid, and facilitates repair of the damaged cell. If the temperature remains high, heat shock proteins will remain at a steady-state level in the cell, which is higher [...]
A Brundage Web-log
Things Adrienne & Dean Do, Think and WriteBrowsing Posts published in March, 2010
When damage to DNA is sensed, the SOS signal induces over 20 unlinked genes. These genes cope with the DNA damage by remairing the damaged DNA, allowing DNA replication to proceed past the damaged site (translesion synthesis), and stalling cell division to allow time for DNA repair. Normally, the SOS response system is suppressed by [...]
Hello again! Today I’m going to tackle a broad, essay type question that pertains to bacterial movement: Chemotaxis. Chemotaxis is the ability of a bacterium to move along a concentration gradient, either towards an attractant or away from a repellent. The attractant or repellent is termed a chemoeffector, and is monitored by a system of [...]
My second try at an Altbier turned out better than the first. Alt One got an infection from the MiniBrew plastic conicals I was using. A tragedy, because it tasted so good coming out of the kettle. Alt Two is not my own recipe, but a concoction from Jamil Zainasheff’s Brewing Classic Styles. Scaled up [...]
It is 14.6° Plato and Something Else is three weeks old. Starting at 25.2º P, the big gravity beer weighs in at a small 6.2% ABV. Before putting it all away for conditioning a little evaluation is in order. There is a little ester in the nose. No hop aroma. The uncarbonated beer is sweet, [...]
