Chapter 589: limit

Li Ang's mouth turned upside-down, and he said with a smile, "Why do I feel so

painful all over my body when I woke up? After installing the battery, I got

better immediately.Why does the rubber-clad figure open the stone wall, the groove of the wall

will leave a sweet liquid,Why in Room F, I was asked to use sugar cane to make battery fluid?The reason is very simple. The so-called battery is not to provide energy for

this suit of me.It provides me with energy.This thing..."He pointed his finger at the glass cylinder on his left arm, "It's actually

just ordinary glucose.""..."Alice did not speak, but turned her head slightly and "looked" at the battery

that Li Ang pointed at."Glucose, with the molecular formula C6H12O6, is the most widely distributed

and most important monosaccharide in nature, a kind of polyhydroxy aldehyde,

according to the explanation of Encyclopedia. It is the energy source of

living cells and the intermediate product of metabolism, that is, the main

energy supply substance of organisms. .However, glucose here refers to D glucose,And the tube on my shoulder is L glucose. "Li Ang rubbed the bridge of his nose which was pressed by the mask, and said

calmly: "D-glucose and L-glucose have different positions of the last hydroxyl

group.The chirality is different, they are mirror images of each other and are

enantiomers.The so-called chirality is an essential attribute of nature,The carbon atom has four chemical bonds and can connect four functional

groups,Due to the variety of functional groups, organic matter also has asymmetry,

that is, chirality.When a carbon atom is the chiral center, there will be two spatial structures,The two configurations have the same atomic composition, but they are mirror

images of each other,Just like the human left hand and right hand, they cannot be rotated to

achieve overlap.Usually R-S or D-L chiral substances are used for identification.Molecules of different configurations only have changes in the three-

dimensional structure, but they may differ in physiological and

pharmacological activities.For example, a thalidomide drug,Its R-type can play a sedative effect and relieve the vomiting of pregnant

women, so it is used as a drug to suppress pregnancy reactions.But the S type has a very strong teratogenic effect,If R and S are not separated, the result will be a large number of malformed

fetuses.This is also true for L-glucose.Normal D-glucose passes through the non-aerobic glycolysis pathway, the

aerobic tricarboxylic acid cycle and the biological oxidation process to

produce carbon dioxide and water, releasing more energy and storing it in the

form of ATP.However, the enantiomer of D-glucose, L-glucose, cannot be phosphorylated by

hexokinase, which means it cannot be used by normal mammals. "Li Ang pointed his finger at his nose, "In other words, I am not a normal

mammal."Alice asked softly, "How did you know that it is L-glucose...""the reason is simple,"Li Ang shrugged, "In fact, as a puzzle game, he gave me too many hints.The envelope in room A smells of lemon,Room E L menthol smells musty,Aspartyl, it tastes crying,Limonene has the same lemon fragrance as the envelope in Room A"He picked up several bottles tied with cloth strips on his waist and

introduced in turn, "Menthol is a kind of cyclic monoterpenoids, a highly

volatile essential oil produced by plants.Menthol has a cool mint aroma, but its enantiomer D-menthol has a musty smell.Asparagine is sweet, but its enantiomer R-asparagine is bitter.There are two chiral subtypes of limonene, one is lemon flavor and the other

is orange flavor.Before I crossed the Shimen, I smelled lemon,And now..."He opened the jar containing the limonene, took a deep breath, and smiled at

Alice, "It turned into an orange smell.If I’m not mistaken, one of the effects of this tunnel,Is the whole body of the person who flips the entrant,The human mirror is symmetrical, so that all small protein nucleic acid

molecules in the body undergo chiral inversion together.The consequences,That is, those who enter the tunnel cannot use conventional D-glucose,And I can only use artificially synthesized L-glucose as an energy source-this

is why I am restricted to only three hours of active time.At the same time, the alchemist said that going down the well will bring

sequelae, and special clothing must be used to isolate the effect. "He raised his arm, pointed his thumb at the stone wall behind him, smiled and

said, "Do you remember the password for the door of Room E?"mobius, Mobius.Take a long white piece of paper and paint the reverse side black,Then flip one end,Connect the two ends to form a Mobius belt.If you take a circle along Mobius, the left becomes the right, and the up

becomes the down.Just like chirality reversal.The well is the Mobius belt and the tunnel,The special outfit that the alchemist said was the one I was wearing-but this

outfit may be missing some key parts,As a result, I didn’t actually shield the chirality reversal effect,He didn't return to normal until he stepped out of the stone wall. "Li Ang said in a deep voice: "In Room D~~ the alchemist’s own

desk calendar says that he will be on the 3.2th,Go to Amesdoris for his wife to receive the Alchemist Medal from the

President,At the same time, I will also visit teachers who are studying alkylating

agents recently.Alkylating agents are a class of compounds with highly active chemical

properties, belonging to cytotoxic drugs, which can form carbocations or other

compounds with active electrophilic groups in the body.In turn, it covalently binds to the electron-rich group in the biological

macromolecule in the cell, causing it to lose activity or break the DNA

molecule.Mainly used for malignant lymphoma and chronic lymphocytic leukemia,It happens to correspond to what the content of the conversation said, that

your sister Hillid has a certain disease.Considering that the degree of medical and chemical development in the world

is not high, there is a high probability that the technology of high-

efficiency chiral catalysts will not be developed.Your father should want to use the chirality reversal function of the well or

channel to prepare chiral-specific drugs to treat the youngest daughter’s

disease.Unfortunately, before getting the final result,Tragedy happened,Force your father to take the most extreme methods. "Li Ang stretched out his hand and patted the stone wall of the tunnel, and

said calmly: "This tunnel may not only have the ability to reverse the

chirality.It also has the function of warping time and manufacturing cycles.It is like a Mobius ring that never reaches the end,Or a ferocious ouroboros that devours its tail out of greed.In this tunnel, cause is effect, and effect is cause.There is no longer a boundary between time and space,The gap between the past and the future is completely blurred.This mansion, this tragedy, has never been behind the scenes,In other words, the only man behind the scenes,It is the alchemist himself, it is myself. "