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Proteins

Proteins are the macromolecules coded in our DNA that function as a biocatalyst and build our body. Apart from Biological knowledge, there are spectacular concepts in the field of proteins. How does a protein produce a function, how do they interact, how did they evolve and how do protein mutations cause disease.

460 Questions

What are carrier proteins?

Carrier proteins are proteins that bind to specific molecules and transport them across cell membranes. They are essential for facilitating the movement of molecules like ions, nutrients, and signaling molecules in and out of cells. Carrier proteins exhibit selectivity and saturation kinetics in their binding and transport activities.

Where can you find protein in your body?

Every cell has proteins. All genes ultimately code for proteins. Proteins are involved in virtually all (if not all) cell processes. Proteins are found in the cell membranes, in the cytosol, in organelles, in the bloodstream, basically everywhere.

Where are proteins synthesized?

Proteins are synthesized in the cell's ribosomes, which can be found either in the cytoplasm or attached to the endoplasmic reticulum (ER) in eukaryotic cells. The process of protein synthesis involves translating the genetic information from the mRNA into a specific sequence of amino acids that make up the protein.

How are proteins created?

Ribosome.

They attach to DNA strand and from the information taken create the proteins.

What makes up proteins?

Proteins are made up of amino acids, the building blocks of protein. Amino acids are linked together in a specific sequence to form a protein molecule. The sequence of amino acids in a protein determines its structure and function.

What is proteins polymer?

The protein polymer is the sequence of nucleotide base pair and the building blocks or we can call it as monomers of proteins which are nitrogen base and many of them together in different series and sequence form a protein which is metabolically very important to humane.

What produces protein?

Protein is produced by cells in the body through a process called protein synthesis. This process involves the transcription of DNA into messenger RNA (mRNA), which is then translated into proteins by ribosomes. Proteins are essential for various functions in the body, including growth, repair, and maintaining the structure of cells and tissues.

Why are proteins important in humans diet?

Many of our bodily functions occur because of proteins that occur throughout the body. Blood clotting occurs due to proteins working together in a complex series of reactions. Our immune systems use proteins called antibodies to keep us safe from infections. Even our DNA uses proteins to reproduce and synthesize more DNA and to make other cellular materials, including more proteins.

What are good sources of protein for vegans?

Good sources of protein for vegans include beans, lentils, tofu, tempeh, edamame, quinoa, nuts, seeds, and plant-based protein powders. These foods are rich in essential amino acids and can help vegans meet their protein needs.

Where proteins are made?

Proteins are made from amino-acids and are assembled Via Ribosomes. RER [rough endoplasmic reticulum] contains Ribosomes while SER [smooth endoplasmic reticulum] does not.
They are synthesized by ribosomes which are found in the cytoplasm of a cell.

Examples of proteins?

proteins are structural materials, energy sources, and chemical messengers.

What manufactures proteins?

Wherever the gene expression happens, proteins may be synthesized. This is tightly controlled by operon elements in our genome. If the proteins coding mRNA is synthesized, then it can trigger the synthesis of proteins in the cytoplasm.

Monomer of proteins?

The monomer of proteins are amino acids. Amino acids are organic compounds that contain an amino group (-NH2) and a carboxyl group (-COOH), along with a side chain group that gives each amino acid its unique properties. Proteins are made up of long chains of amino acids linked together by peptide bonds.

What are soluble proteins?

Soluble proteins are proteins that can dissolve in water or other solvents. They typically have hydrophilic regions on their surface that make them compatible with aqueous environments. These proteins play important roles in various cellular processes, such as enzymatic reactions, signal transduction, and structural support.

Are all proteins enzymes?

No, not all proteins are enzymes. Enzymes are a type of protein that acts as biological catalysts to facilitate chemical reactions in living organisms. While many enzymes are proteins, not all proteins have enzymatic activity. Proteins can have a variety of functions in the body beyond catalyzing reactions.

How are proteins made?

Proteins are made by protein synthesis in the cytoplasm. DNA is responsible for coding the information that will make proteins. DNA transcribe mRNA, transport it from nucleus. Ribosome and tRNA in cytosol synthesis proteins as per the message coded in the mRNA.

What is an amino acid?

An amino acid is an organic compound containing both an amino and a carboxylic acid functional group - or any of the twenty naturally occurring α-amino acids and a variety of side chains which combine via peptide bonds to form proteins.

What is protein aggregation?

Aggregation is a general term that encompasses several types of interactions or characteristics. Aggregates of proteins may arise from several mechanisms and may be classified in numerous ways, including soluble/insoluble, covalent/noncovalent, reversible/irreversible, and native/denatured.

Are enzymes proteins?

Most enzymes are proteins, yes. However, the statement (used some number of years ago) that all enzymes are proteins is false. There are a few (but important) exceptions to that generalization.

Simple proteins are composed of only what?

Simple proteins are composed of only amino acids. These proteins are also called monomeric proteins because they consist of a single polypeptide chain. The sequence of amino acids determines the structure and function of the protein.

Why are some proteins water soluble and others proteins are not?

The solubility of proteins in water is determined by their structure and amino acid composition. Proteins with a high proportion of hydrophilic amino acids (such as charged and polar amino acids) tend to be water soluble. Conversely, proteins with a high proportion of hydrophobic amino acids (such as nonpolar amino acids) tend to be insoluble in water. Additionally, the presence of strong intra- or intermolecular forces (such as disulfide bonds) can also contribute to protein insolubility in water.

What are the two most important antimicrobial proteins?

The two most important antimicrobial proteins are defensins and cathelicidins. Defensins are small cationic peptides that can bind to and disrupt the cell membranes of bacteria, fungi, and viruses. Cathelicidins are also cationic peptides that can kill microbes by disrupting their cell membranes and by modulating the immune response.

What are three types of fibrous proteins?

  • Keratin. Occurring in all higher vertebrates, it is the principal component of their horny outer epidermal layer. Keratins are classified in alpha-keratins, which occur in mammals (around 30 variants), and beta-keratins, present in birds and reptiles.

  • Silk fibroin. Produced by insects and arachnids to fabricate structures such as cocoons, spider webs, nests, and egg stalks.

  • Collagen. Occurs in all multicellular animals and is the most abundant protein of vertebrates. Collagen is an extracellular protein that is organized into insoluble fibers of great tensile strenght. It is the major component of connective tissues such as bones, cartilagues, tendons, ligaments, and the fibrous matrices of skin and blood vessels.

How do proteins know what to do?

Proteins are produced according to the information encoded in our DNA. They have specific three-dimensional structures that enable them to interact with other molecules in a precise manner. Their functions are dictated by their structure, which allows them to recognize and bind to specific molecules, catalyze biochemical reactions, transmit signals within cells, or provide structural support, among other roles. In summary, proteins know what to do based on their intrinsic properties and the specific molecular interactions they can form.

How much fat and proteins in yoghurt?

Yoghurt typically contains between 5% and 15% protein.