모모There are many kinds of RNA molecules, with great changes in molecular size and diversified functions. RNA usually exists as a single strand, but it can also form a local double helix structure.This shows that, inhibitors It has a strong development pulse and is an indispensable source of power for the development of the industry. https://www.all-chemistry.com/

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모모1. Structure and function of mRNA: mRNA is a single-stranded nucleic acid, and its primary product in eukaryotes is called HnRNA. Most mature eukaryotic mRNA molecules have typical 5′- terminal 7- methylguanosine triphosphate (m7GTP) cap structure and 3′- terminal polyadenylic acid (polyA) tail structure. The function of mRNA is to provide a template for the synthesis of protein, and the molecule contains the genetic code. Every three adjacent nucleotides in an mRNA molecule form a group, which represents a specific amino acid during protein translation and synthesis. This nucleotide triplet is called the genetic code (coden).

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모모2. Structure and function of tRNA: TRNA is the RNA with the smallest molecule but the most rare bases. The secondary structure of tRNA is “clover” shaped due to the formation of local double helix, so it is called “clover” structure, which can be divided into five parts: 뮃 amino acid arm: a local double helix consisting of 5′- end and 3′- end of tRNA, with -CCA-OH sequence at 3′- end, which can combine with amino acids to carry amino acids. 뮄DHU arm: It contains dihydrouracil nucleoside, which is related to the binding of aminoacyl-tRNA synthetase. 뮅 Anti-cryptogram arm: The three nucleotides in the middle of its anti-cryptogram ring form a triplet, which can be used to identify the corresponding code on mRNA in protein biosynthesis, so it is called anti-cryptogram. 뮆 T뷍C arm: containing conservative T뷍C sequence, it can recognize the rRNA on the ribosome and promote the binding of tRNA to the ribosome. 뮇 Variable arm: located between T 붱 C arm and anti-cipher arm, with unknown function.

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모모3. Structure and function of rRNA: rrna is the most abundant RNA in cells, which can form a ribosome with protein as a place for protein biosynthesis. There are three kinds of rRNA in prokaryotes: 5S, 16S and 23S. There are four kinds of rRNA in eukaryotes: 5S, 5.8S, 18S and 28S.

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　　Catalytic function:

　　The chemical essence of most enzymes in organisms is protein. In our daily life, we also use enzyme-added washing powder, which can effectively remove stains.

　　Immune function:

　　In our present environment, there are bacteria and viruses everywhere, and our body will not get sick every three days with an immune system, and immune proteins, such as antibodies, play a key role in this.

　　Transport function:

　　Protein with transport function can be divided into two categories, one is familiar to us-hemoglobin in red blood cells, which is used to transport oxygen; The other is the carrier protein on biofilm, which is used to transport amino acids, glucose and other substances.

　　Adjustment function:

　　Some protein can transmit information and regulate the life activities of the body. Such as insulin, which regulates glucose metabolism.

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According to a report by the Russian News Agency on March 21, Dutch Admiral Robbauer, chairman of the NATO Military Committee, who is visiting Ukraine, said that he is leading the first NATO military delegation to visit the country since the beginning of the Russia-Ukraine conflict.

Reported that Powell said in a speech at a security forum in Kiev that he was leading the first NATO military delegation to visit Ukraine since the outbreak of the Russia-Ukraine conflict.

He said the reason for the visit was that NATO and Ukraine were getting closer than ever before.

Reports said that Russia had previously issued notes to NATO countries regarding their practice of providing weapons to Ukraine. Russian Foreign Minister Lavrov pointed out that any cargo containing weapons for Ukraine will become a legitimate target for Russian troops. The Russian Foreign Ministry said that NATO countries that provide weapons to Ukraine are playing with fire. Russian Presidential Press Secretary Peskov said that Western arms supplies will not help the success of Russia-Ukraine negotiations and will only have a negative impact.

According to a report by the German News TV channel on the 20th, Polish Foreign Minister Sikorski said that Western soldiers are open secrets in Ukraine. He said that as the German Chancellor said, there are already troops from a number of major powers in Ukraine. (Compiled by Liu Yang)

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Doha, March 19 (Reporter Wang Qiang) Qatar Foreign Ministry spokesman Ansari said on the 19th that the Gaza ceasefire negotiations are not yet close to reaching an agreement, and Qatar is cautiously optimistic about the negotiations.

Ansari said at a weekly press conference that day that Barnea, director of the Israeli Intelligence and Secret Service (Mossad), who led the Israeli delegation, had left Qatar, but the technical issues team was still conducting consultations in Doha. Negotiations are still ongoing, but are far from being announced. Qatar hopes that the negotiations will continue until an agreement is reached.

Ansari also warned that fighting in the southern Gaza Strip city of Rafarot would cause a humanitarian disaster and would have an impact on the negotiations once the situation escalates.

The Israeli delegation arrived in Qatar on the 18th to hold negotiations with Qatar and Egyptian officials. Since Hamas and Israel refused to negotiate face-to-face, Egypt and Qatar spoke the message.

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Jerusalem, May 21 (Reporters Lu Yingxu and Wang Zhuolun) Israeli Communications Minister Karshi issued a statement on the evening of the 21st, announcing the cancellation of the ministry’s decision that day to confiscate the Associated Press’s live broadcast equipment and ordering the equipment to be returned to the Associated Press.

The Israeli Ministry of Communications issued a statement earlier on the 21st, saying that the Associated Press conducted a live broadcast of an attempt to track the activities of our military and forwarded the video material to Qatar Al Jazeera. This practice violated Israel’s media law. The Ministry confiscated the Associated Press’s camera that day. The Ministry of Communications will continue to take necessary law enforcement actions to restrict news broadcasts that endanger national security.

The Associated Press reported that Israeli Ministry of Communications officials confiscated Associated Press camera equipment in the southern Israeli city of Sderot that day. Qatar Al Jazeera is one of the users of live video broadcasts by the Associated Press and other news organizations. The Associated Press condemned the government’s abuse of media laws and urged it to return equipment.

A White House spokesman said on the same day that the United States is concerned about this and is in contact with the Israeli government and demanding that Israel reverse the situation.

The Knesset passed a law on April 1 this year, authorizing the government to temporarily shut down foreign television stations operating in Israel for a period of 45 days, but could be extended in the name of endangering national security. The Israeli government announced on May 5 that it had decided to shut down the branch of Qatar Al Jazeera in Israel and ban its channels from broadcasting in Israel.

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Houston, May 15 (Reporter Xu Jianmei) The municipal authority of Galveston, an island city in eastern Texas, said on the 15th that a barge hit a local bridge that day, causing a fuel leak and damage to the bridge.

The bridge involved was the only land route to Pelican Island north of Galveston. David Flores, head of bridge affairs for the Galveston County Navigation District, said that due to strong water and high waves, a tugboat from Texas International Port lost control of two refueling barges it was driving, one of which hit the bridge pillar.

Aerial footage showed that part of the bridge pillars collapsed, and large pieces of broken concrete and rail fragments hung on one side of the bridge and fell onto the barge.

After the accident, the bridge, which was opened in 1960, was closed. Galveston City Authority said in a statement that no injuries had been reported. The accident caused a fuel leak in the Gulf of Mexico, and the U.S. Coast Guard will determine the extent of the leak and initiate control and cleanup procedures.

Galveston County spokesman Spencer Lewis said the barge could carry 30,000 gallons of oil (about 113.55 million liters). It was unclear how much leaked into the bay. About 105 kilometers of waterways around the incident were closed.

Texas A & M University at Galveston on Pelican Island said the accident caused a brief power outage at the school and power has now been restored.

According to US media reports, American ship collisions with bridges have occurred frequently in the past few months. On March 26, a container cargo ship crashed into a bridge in Baltimore, Maryland, in the eastern United States and collapsed, killing six people. On April 12 and 13 on the Ohio River near Pittsburgh, Pennsylvania, 26 inland river barges separated from their moorings due to floods and drifted uncontrollably, when one hit a bridge that had been closed. On May 9, a large barge broke loose from a tugboat on the Mississippi River flowing through Iowa and sank after hitting the nearly century-old Fort Madison Bridge.

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On the 24th local time, Sandis Saka, governor of Enga Province, Papua New Guinea, publicly issued a document saying that the landslide that occurred in the province in the early morning of the day was an unprecedented natural disaster that caused huge losses to property and human lives. The landslide affected more than six villages in the province, and it is not yet possible to calculate specific losses.

Sandis Saka expressed sympathy to local communities and families, as well as to the people affected by the disaster and the victims.

Sandis Saka said that the Nga provincial government deployed a Rapid Incident Response Service team to the scene that morning to carry out rescue work and conduct a rapid assessment of the extent of local damage. The team is composed of officials from the Provincial Disaster Relief Office, Provincial Health Bureau, Police, Papua New Guinea Defense Force, and international organizations based in Papua New Guinea such as the Office of International Migration and the United Nations Development Program.

At about 3 a.m. local time on the 24th, a village in Enga Province, Papua New Guinea suffered a landslide. Local residents said the estimated death toll exceeded 100. Authorities have not yet confirmed the number of casualties. (General reporter Liu Zhimin)

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According to CCTV news client, on the 12th local time, the Sudanese Armed Forces and the Rapid Support Force, both sides of the Sudanese armed conflict, continued to exchange fire in various areas of the capital Khartoum. The emergency room of the Sudanese humanitarian aid group says six people have been killed when shells hit a residential area in southern Khartoum.

The Rapid Support Force said on the same day that the Sudanese Armed Forces used heavy artillery to bomb the Presidential Palace in the center of the city, causing a fire to the Old Republican Palace in the Presidential Palace. Rapid Support Force soldiers who controlled the presidential palace then extinguished the fire. The Sudanese Armed Forces have not responded to this.

On April 15, 2023, an armed conflict broke out between the Sudanese Armed Forces and the Rapid Support Force in the capital Khartoum, which subsequently spread to other areas and continues to this day. The presidential palace was controlled by the Rapid Support Force at the beginning of the conflict and has been bombarded and shelled many times.

The two sides in the Sudanese conflict recently exchanged fire in the western part of the country

27 civilians have been killed

On the 12th local time, the United Nations Office for the Coordination of Humanitarian Affairs issued a statement saying that the Sudanese Armed Forces and the Rapid Support Force have exchanged fire again in El Fasher, the capital of Northern Darfur State in western Sudan, since May 10, killing at least 27 civilians. About 130 people were injured.

The statement said that only one hospital is still operating in El Fasher, but there is a serious shortage of medicines and medical supplies. In addition, the conflict caused a large number of local civilians to flee southward from the east and northwest of El Fasher city. Since early April this year, more than 40,000 people have been displaced in the city.

According to local media reports, the two parties to the conflict exchanged fire in various areas in the east, south and north of El Fasher since the early morning of the 12th, and the fighting continued into the evening. Many residential areas in the city were hit by air strikes and shelling, causing civilian casualties. El Fasher Children’s Hospital in the south of the city was forced to evacuate.

According to reports, recently, the two parties to the conflict have fought fiercely for control of Northern Darfur.

Photo source: CCTV News Client

A market attacked in the capital of North Kordofan State in Sudan

At least 15 civilians were killed

According to Sudanese media reports on the 12th local time, the Sudanese Rapid Support Force launched an attack on a market west of Obayid City, the capital of Northern Kordofan State in the west of the country, and clashed with people in the market, killing at least 15 civilians. Death.

Recently, there have been many incidents of armed elements attacking villages and towns in Gezira and Sennar states in central Sudan, as well as in the Kordofan region and Darfur region in western Sudan. Statistics from the Sudanese civil organization Resistance Committee show that the attack has killed hundreds of civilians. The Resistance Council said the perpetrators of these attacks were members of the Rapid Support Force. The Rapid Support Force denied this.

China News Service integrated from CCTV News Client

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According to South Korea’s “Chosun Ilbo” and other South Korean media reports, Cho Dou-Chun, the prototype criminal of the South Korean film “So-won”, was sentenced to three months in prison by the South Korean District Court on the 20th for violating the night travel restriction after being released from prison.

According to South Korean media, Zhao Douchun was sentenced to 12 years in prison in 2009 and was released from prison after serving his sentence in December 2020. South Korean courts issued a restriction order on night travel.《

Chosun Ilbo stated that on the evening of December 4, 2023, Cho Douchun left home alone and wandered around the community for 40 minutes, during which he deliberately wandered near the guard post next to his residence, causing panic among community residents. His explanation to the police was that my wife and I had a quarrel.

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Putin wins Russian presidential election and says he will continue to promote national development

According to data released by the Central Election Commission of Russia in the early morning of the 18th local time, of the 85% of the votes counted in the Russian presidential election, current President Vladimir Putin has a significant lead over other candidates with 87.19%, and has actually won the presidential election.

Khalitonov of the Communist Party of the Russian Federation ranked second with 424% of the vote, Davankov of the Russian New Zealand Party ranked third with 399% of the vote, and Slutsky of the Russian Liberal Democratic Party ranked fourth with 316%.

Putin delivered a speech at the campaign headquarters in the early morning of the 18th, thanking all voters for their support. He said that Russia is a big family. The results of this election reflect the trust and expectations of voters, and all tasks of the country will be completed. Russia will move forward further and become stronger, stronger and more efficient.

Putin said at a subsequent press conference that he would continue to promote national development in his new term. He said that all major tasks for national development have been elaborated in the recent State of the Union address delivered to both houses of Parliament, and will do everything possible to achieve the set goals.

The official vote for the eighth presidential election in Russia was held from the 15th to the 17th. According to the Russian presidential election rules, those who obtain more than 50% of the votes in the election are elected president. The Russian Central Election Commission will confirm the results of the presidential election no later than March 28 and announce them within 3 days after the election results are confirmed.

Russian Central Election Commission Chairman Pamfilova said on the 17th that Russia invited 1115 international observers from 129 countries and regions to supervise the voting to ensure fairness and transparency of the election.