The genetic code is the set of rules by which ribosomes translate nucleic acid sequences into amino acid sequences during biological protein synthesis. It is summarized in a genetic code table that shows the relationships between codons and amino acids. The genetic code is nearly universal across all living organisms and has several key properties: it is triplet, non-overlapping, commaless, and specifies both start and stop signals. There are some minor exceptions to the universal genetic code, such as reassignment of stop codons or dual coding of some codons.
RNA splicing is a biological process where a newly synthesized pre-mRNA transcript is processed and transformed into mRNA. It involves the removing of non-coding regions of RNA (introns) and the joining of the coding regions (exons).
RNA splicing is a biological process where a newly synthesized pre-mRNA transcript is processed and transformed into mRNA. It involves the removing of non-coding regions of RNA (introns) and the joining of the coding regions (exons).
Introduction
Protein modifications
Folding
Chaperon mediated
Enzymatic
Cleavage
Addition of functional groups
Chemical groups
Hydrophobic groups
Proteolysis
Conclusion
Reference
SOS response was discovered by Miroslav Radman. It's a part of DNA repair system- synthesizes enzymes required for DNA repair. Cellular response to UV damage.
Eukaryotic transcription is carried out in the nucleus of the cell and proceeds in three sequential stages: initiation, elongation, and termination. Eukaryotes require transcription factors to first bind to the promoter region and then help recruit the appropriate polymerase.
Genetic code is a dictionary that corresponds with sequence of nucleotides and sequence of amino acids.
Genetic code is a set of rules by which information encoded in genetic material(DNA or RNA sequences) is translated into proteins by living cells.
Term given By ″ Goerge Gamow ʺ
Introduction
Protein modifications
Folding
Chaperon mediated
Enzymatic
Cleavage
Addition of functional groups
Chemical groups
Hydrophobic groups
Proteolysis
Conclusion
Reference
SOS response was discovered by Miroslav Radman. It's a part of DNA repair system- synthesizes enzymes required for DNA repair. Cellular response to UV damage.
Eukaryotic transcription is carried out in the nucleus of the cell and proceeds in three sequential stages: initiation, elongation, and termination. Eukaryotes require transcription factors to first bind to the promoter region and then help recruit the appropriate polymerase.
Genetic code is a dictionary that corresponds with sequence of nucleotides and sequence of amino acids.
Genetic code is a set of rules by which information encoded in genetic material(DNA or RNA sequences) is translated into proteins by living cells.
Term given By ″ Goerge Gamow ʺ
Genetic Information Transfer (Biology for Engineers)Dr. Arun Sharma
Information Transfer: Purpose: The molecular basis of coding and
decoding genetic information is universal. Molecular basis of information
transfer. DNA as a genetic material. Hierarchy of DNA structure- from
single stranded to double helix to nucleosomes. Concept of genetic code.
Universality and degeneracy of genetic code. Define gene in terms of
complementation and recombination.
• The genetic code is the set of rules by which information encoded in genetic material (DNA or RNA sequences) is translated into proteins (amino acid sequences) by living cells.
• The genetic code, once thought to be identical in all forms of life, has been found to diverge slightly in certain organisms and in the mitochondria of some eukaryotes.
• Nevertheless, these differences are rare, and the genetic code is identical in almost all species, with the same codons specifying the same amino acids.
Genetic code is the term we use for the way that the four bases of DNA--the A, C, G, and Ts--are strung together in a way that the cellular machinery, the ribosome, can read them and turn them into a protein. In the genetic code, each three nucleotides in a row count as a triplet and code for a single amino acid.
The sequence of nucleotides in deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) that determines the amino acid sequence of proteins. Though the linear sequence of nucleotides in DNA contains the information for protein sequences, proteins are not made directly from DNA. Instead, a messenger RNA (mRNA) molecule is synthesized from the DNA and directs the formation of the protein. RNA is composed of four nucleotides: adenine (A), guanine (G), cytosine (C), and uracil."(U)."
Genetic Code. A comprehensive overview..pdfmughalgumar440
The genetic code serves as nature's instruction manual, dictating how genetic information is translated into proteins essential for life. Comprised of codons which code for specific amino acid or signaling the start or end of protein synthesis. This code exhibits redundancy and universality across organisms, In essence, the genetic code is the foundation of biological diversity and functionality, shaping the characteristics and functions of all living beings.
Genetic information is stored in DNA by means of a triplet code that is nearly universal to all living things on Earth.
The genetic code is initially transferred from DNA to RNA, in the process of transcription.
Genetic information is stored in DNA by means of a triplet code that is nearly universal to all living things on Earth.
The genetic code is initially transferred from DNA to RNA, in the process of transcription.
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
New Directions in Targeted Therapeutic Approaches for Older Adults With Mantl...i3 Health
i3 Health is pleased to make the speaker slides from this activity available for use as a non-accredited self-study or teaching resource.
This slide deck presented by Dr. Kami Maddocks, Professor-Clinical in the Division of Hematology and
Associate Division Director for Ambulatory Operations
The Ohio State University Comprehensive Cancer Center, will provide insight into new directions in targeted therapeutic approaches for older adults with mantle cell lymphoma.
STATEMENT OF NEED
Mantle cell lymphoma (MCL) is a rare, aggressive B-cell non-Hodgkin lymphoma (NHL) accounting for 5% to 7% of all lymphomas. Its prognosis ranges from indolent disease that does not require treatment for years to very aggressive disease, which is associated with poor survival (Silkenstedt et al, 2021). Typically, MCL is diagnosed at advanced stage and in older patients who cannot tolerate intensive therapy (NCCN, 2022). Although recent advances have slightly increased remission rates, recurrence and relapse remain very common, leading to a median overall survival between 3 and 6 years (LLS, 2021). Though there are several effective options, progress is still needed towards establishing an accepted frontline approach for MCL (Castellino et al, 2022). Treatment selection and management of MCL are complicated by the heterogeneity of prognosis, advanced age and comorbidities of patients, and lack of an established standard approach for treatment, making it vital that clinicians be familiar with the latest research and advances in this area. In this activity chaired by Michael Wang, MD, Professor in the Department of Lymphoma & Myeloma at MD Anderson Cancer Center, expert faculty will discuss prognostic factors informing treatment, the promising results of recent trials in new therapeutic approaches, and the implications of treatment resistance in therapeutic selection for MCL.
Target Audience
Hematology/oncology fellows, attending faculty, and other health care professionals involved in the treatment of patients with mantle cell lymphoma (MCL).
Learning Objectives
1.) Identify clinical and biological prognostic factors that can guide treatment decision making for older adults with MCL
2.) Evaluate emerging data on targeted therapeutic approaches for treatment-naive and relapsed/refractory MCL and their applicability to older adults
3.) Assess mechanisms of resistance to targeted therapies for MCL and their implications for treatment selection
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
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Report Back from SGO 2024: What’s the Latest in Cervical Cancer?bkling
Are you curious about what’s new in cervical cancer research or unsure what the findings mean? Join Dr. Emily Ko, a gynecologic oncologist at Penn Medicine, to learn about the latest updates from the Society of Gynecologic Oncology (SGO) 2024 Annual Meeting on Women’s Cancer. Dr. Ko will discuss what the research presented at the conference means for you and answer your questions about the new developments.
Acute scrotum is a general term referring to an emergency condition affecting the contents or the wall of the scrotum.
There are a number of conditions that present acutely, predominantly with pain and/or swelling
A careful and detailed history and examination, and in some cases, investigations allow differentiation between these diagnoses. A prompt diagnosis is essential as the patient may require urgent surgical intervention
Testicular torsion refers to twisting of the spermatic cord, causing ischaemia of the testicle.
Testicular torsion results from inadequate fixation of the testis to the tunica vaginalis producing ischemia from reduced arterial inflow and venous outflow obstruction.
The prevalence of testicular torsion in adult patients hospitalized with acute scrotal pain is approximately 25 to 50 percent
Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
Ozempic: Preoperative Management of Patients on GLP-1 Receptor Agonists Saeid Safari
Preoperative Management of Patients on GLP-1 Receptor Agonists like Ozempic and Semiglutide
ASA GUIDELINE
NYSORA Guideline
2 Case Reports of Gastric Ultrasound
micro teaching on communication m.sc nursing.pdfAnurag Sharma
Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
2. Outlines
• What is genetic code?
• Genetic code table
• Wobble Hypothesis
• Properties of genetic code
• Exceptions to the code
3. GENETIC CODE
The genetic code can be defined as the set of
certain rules using which the living cells translate
the information encoded within genetic material
(DNA or mRNA sequences). The ribosomes are
responsible to accomplish the process of
translation. They link the amino acids in an
mRNA-specified (messenger RNA) order using
tRNA (transfer RNA ) molecules to carry amino
acids and to read the mRNA three nucleotides at
a time.
4. The complete set of relationships among amino acids and codons is said to be a
genetic code which is often summarized in a table.
5. Genetic Code Table
It can be seen that many amino acids are shown in the table by
more than one codon. For example, there are six ways to write
leucine in mRNA language.
Note: A codon is a sequence of three nucleotides which together
form a unit of genetic code in a DNA or RNA molecule.
A key point of the genetic code is its universal nature. This indicates
that virtually all species with minor exceptions use the genetic code
for protein synthesis.
In other words, genetic code is defined as the nucleotide sequence
of the base on DNA which is translated into a sequence of amino
acids of the protein to be synthesized.
6. The Wobble Hypothesis
• There are more than one codon for one amino acid. This is
called degeneracy of genetic code.
• To explain the possible cause of degeneracy of codons, in
1966, Francis Crick proposed “the Wobble hypothesis”.
• According to this hypothesis, only the first two bases of the
codon have a precise pairing with the bases of the anticodon
of tRNA, while the pairing between the third bases of codon
and anticodon may Wobble (wobble means to sway or move
unsteadily).
• The phenomenon permits a single tRNA to recognize more
than one codon. Therefore, although there are 61 codons for
amino acids, the number of tRNA is far less (around 40) which
is due to wobbling.
7. • The first two bases of the codon make normal (canonical)
H-bond pairs with the 2nd and 3rd bases of the anticodon.
• At the remaining position, less stringent rules apply and non-
canonical pairing may occur. The wobble hypothesis thus
proposes a more flexible set of base-pairing rules at the third
position of the codon.
• The relaxed base-pairing requirement, or “wobble,” allows the
anticodon of a single form of tRNA to pair with more than one
triplet in mRNA.
• The rules: first base U can recognize A or G, first base G can
recognize U or C, and first base I can recognize U, C or A.
8.
9.
10. Properties of Genetic Code
• Triplet code
• Non-ambiguous and Universal
• Degenerate code
• Non-overlapping code
• Commaless
• Start and Stop Codons
• Polarity
11. Triplet code
A codon or a code word is defined as a group of bases that specify
an amino acid. There is strong evidence, which proves that a
sequence of three nucleotides codes for an amino acid in the
protein, i.e., the code is a triplet.
The four bases of nucleotide i.e, (A, G, C, and U) are used to
produce three-base codons. The 64 codons involve sense codons
(that specify amino acids). Hence, there are 64 codons for 20 amino
acids since every codon for one amino acid means that there exist
more than one code for the same amino acid.
Commaless code
No room for punctuation in between which indicates that every
codon is adjacent to the previous one without any nucleotides
between them.
12. Nonoverlapping code
The code is read sequentially in a group of three and a nucleotide which
becomes a part of triplet never becomes part of the next triplet.
For example
5’-UCU-3’ codes for Serine
5’-AUG-3’ codes for methionine
Polarity
Each triplet is read from 5’ → 3’ direction and the beginning base is 5’
followed by the base in the middle then the last base which is 3’. This
implies that the codons have a fixed polarity and if the codon is read in the
reverse direction, the base sequence of the codon would reverse and
would specify two different proteins.
Degenerate code
Every amino acid except tryptophan (UGG) and methionine (AUG) is coded
by various codons, i.e, a few codons are synonyms and this aspect is known
as the degeneracy of genetic code.
13. Start and Stop Codons
Generally, AUG codon is the initiating or start codon. The
polypeptide chain starts either with eukaryotes (methionine)
or prokaryotes (N- formylmethionine).
On the other hand, UAG, UAA and UGA are called as termination
codons or stop codons. These are not read by any tRNA molecules
and they never code for any amino acids.
Non-ambiguous and Universal
The genetic code is non-ambiguous which means a specific codon
will only code for a particular amino acid. Also, the same genetic
code is seen valid for all the organisms i.e. they are universal.
14. Exceptions to the Code
The genetic code is universal since similar codons are assigned to
identical amino acids along with similar START and STOP signals in
the majority of genes in microorganisms and plants. However, a
few exceptions have been discovered and most of these include
assigning one or two of the STOP codons to an amino acid.
Apart from this, both the codons GUG and AUG may code for
methionine as a starting codon, although GUG is meant for valine.
This breaks the property of non-ambiguousness. Thus, it can be
said that few codes often differs from the universal code or non-
ambiguous code.
15. Codon Universal code Human mitochondrial
code
AGA Arg Stop
AGG Arg Stop
AUA Ile Met