Was thinking of what to cook this morning and thought of that dish. It idea of it is so simple that you can basically use anything in your fridge to make the dish. So what's in Ping's dish? Errr...besides carrot, lettuce and chicken, there really is nothing else. But if those few stuff are your favorite, the dish can still be tasty. So who needs P. F. Chang's? Definitely not Ping tonight! *blek*
Ping marinated the chicken with tau eu (soy sauce) and oh eu (oyster sauce) for a few hours, sliced some orange rind (this is the best thing that Ping found out from Rachel Ray's blog...never thought we could make use of the orange skin!...well, besides when we have to drink the nasty eok bi when we had a bad cough as a kid. Until today, Ping can still remember how much Ping dislike drinking that chinese medicine recommended by some sin seh), and then we just char (stir-fry) them all together!
Ping had it with Boston head lettuce. That's Ping's favorite lettuce although a little more pricey than the regular lettuce. But it has much more nutrient mer. And crunchier too! Mom likes the Boston lettuce too. Actually it was mom who first bought them when they started selling the hydroponic grown vegetables at Yaohon (who used to be the anchor tenant for Sunway Pyramid).Yummy! Had a very satisfying meal while Ping realized that all microbes with rrn operons that have interoperon heterogeneity more than 3% are thermophiles! Hmm...does that mean horizontal gene transfer can occur for rrn operons at higher temperature? Possible, but the sequence of the divergent copy has no high similarity with other closely related relatives. BUT! Presence of a divergent copy of rrn operon does allow them to have a broader range of growth temperature. Isn't that cool!
5 comments:
maybe i dont know enough about this, but how can interoperon heterogeneity of the rrn relate to heterogeneity of temperature. are you suggesting that thermophiles are thermophiles b/c of their ribosomes' ability to withstand high temps rather than their enzymes ability to withstand extreme temperatures?
What is heterogeneity of temperature?
No, thermophiles are not thermophiles because of their ribosomes' ability to withstand high temps but the capability of their ribosomes' to withstand high temps is one of the characteristics that make them capable of growing at such high temperature. No doubt that they have enzymes that can withstand high temperature but before the enzymes can be synthesized, they would need a ribosome that can withstand high temp to synthesize the enzymes. But what is more interesting is that they have different types of rrn operons that allow them to differentially express them under different growth temperature.
HOW did that come up in a discussion of lettuce wraps? :) (They look delicious, by the way)
is it known that thermophiles have ribosomes able to survive high temperatures? suggesting that all ribosomes are not created equally?
I have not come across any papers discussing a 'special' feature of the ribosomes in thermophiles but in archaea Haloarcula marismortuis, one of its ribosome is expressed at a higher level when grown at higher temperature. They did find a secondary structure in the 16S rRNA of this particular ribosome that is less stable at lower temperatures. This is the first that I have come across so far which is why it got me pretty excited. Unfortunately, they didn't look at the 23S rRNA sequence and secondary structure.
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