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BrookLeighton
I'm a seasoned industrial engineer with a keen interest in machine learning. Here to share insights on latest industry trends.
Industry info
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Q&A
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Q
is valine an amino acid
BrookLeighton
NormanWilcox
Release Time:
August 18, 2024, 11:38 AM
Yes, valine is indeed an essential amino acid, vital for human health. It cannot be synthesized by the body and therefore must be obtained from dietary sources. Valine plays a crucial role in stimulating muscle growth and regeneration, as well as in energy production. It is one of the three branched-chain amino acids (BCAAs), alongside leucine and isoleucine, which are especially beneficial in reducing muscle fatigue, enhancing exercise performance, and supporting the healing of injuries. Foods rich in valine include meats, dairy products, soy products, beans, and legumes. Due to its significant roles in muscular and tissue health, valine supplementation is popular among athletes and those involved in rigorous physical activities. Ensuring an adequate intake of valine and other essential amino acids is important for maintaining overall health and well-being.
0
Q
are only amino acids exocytosed to lacteals
BrookLeighton
SherryNewman
Release Time:
August 16, 2024, 10:00 PM
No, amino acids are not the only substances exocytosed to lacteals. Lacteals, which are small lymphatic vessels located in the villi of the small intestine, primarily absorb dietary lipids that have been processed into tiny particles called chylomicrons, along with fat-soluble vitamins (A, D, E, K). These substances, too large to be absorbed directly into the blood capillaries, are instead transported via the lymphatic system to the bloodstream. As for amino acids, they are absorbed directly into the bloodstream through the enterocytes (intestinal cells) and not typically through lacteals. Therefore, while the primary function of lacteals involves the transportation of lipids rather than amino acids, they play a crucial role in the absorption and transportation of dietary fats.
0
Q
how many amino acids combine to form human protein
VictoriaWallace
BrookLeighton
Release Time:
August 15, 2024, 11:41 AM
Proteins, the building blocks of life, are composed of smaller units called amino acids. In humans, there are 20 standard amino acids that combine to form various proteins. These amino acids can link together in different sequences and lengths, ranging from small peptides with just a few amino acids to large proteins containing thousands. On average, most human proteins consist of around 300-400 amino acids. However, the exact number varies significantly depending on the specific protein’s function and complexity. For instance, the largest known human protein, titin, which supports muscle structure, comprises over 27,000 amino acids. Understanding how these amino acids interact and fold into complex three-dimensional shapes is crucial for unraveling protein function and dysfunction, which can lead to various diseases.
0
Q
how to read r33g amino acid substitution
BrookLeighton
JulietKellogg
Release Time:
August 14, 2024, 3:13 PM
The notation “R33G” for an amino acid substitution refers to a specific change in a protein sequence, where the amino acid arginine (R) at position 33 is replaced with glycine (G). Reading and understanding this notation is crucial in fields like genetics and biochemistry. The single-letter abbreviations, R for arginine and G for glycine, are used. Such substitutions can significantly impact protein function, potentially leading to alterations in physiological behavior or disease states. To understand the implications of this change, one would typically assess the biochemical properties of both amino acids (arginine being positively charged and relatively large, and glycine being small and neutral) and consider the protein’s structure and function in which the substitution occurs. Bioinformatic tools and databases can provide insights into how common or impactful a given substitution might be across diverse populations or in specific health conditions.
0
Q
does resin have a shelf life
MichellRalph
BrookLeighton
Release Time:
August 10, 2024, 3:03 AM
Resin, commonly used in various applications such as casting, molding, and art projects, does indeed have a shelf life. Its longevity depends on several factors, including the type of resin, storage conditions, and packaging. Epoxy resins, for example, typically last around one year when stored properly, while polyester resins can maintain their properties for up to three years. Resin should be kept in a cool, dry place, ideally between 60-75°F (15-24°C), away from direct sunlight, which can cause curing. Original, unopened containers help preserve quality longer. Once opened, resins may start to degrade more quickly due to exposure to air and moisture. Signs of degradation include changes in color, viscosity, or the formation of lumps. To extend shelf life, consider storing opened containers in an airtight bag with desiccant packets. Testing a small amount before use can also ensure the resin still performs as expected.
0
Q
is an amino acid a acid
BrookLeighton
VirginiaBen
Release Time:
August 4, 2024, 9:09 AM
Amino acids are organic compounds that play a critical role in biochemistry, serving as the building blocks for proteins. They contain both an amino group (NH2) and a carboxyl group (COOH). The carboxyl group can release a hydrogen ion (H+) into a solution, which gives amino acids their acidic properties. However, amino acids are unique because they also have basic properties due to the amino group, which can accept a hydrogen ion. The overall acid or base behavior of an amino acid in solution is determined by the pH of the environment and the pKa values of its ionizable groups. At physiological pH (approximately 7.4), most amino acids exist in a zwitterion form where the amino group is protonated (NH3+) and the carboxyl group is deprotonated (COO-), making it overall neutral yet still capable of acting as both an acid and a base in different conditions.
0
Q
which amino acid would also have diastereomers
PearlRuth
BrookLeighton
Release Time:
August 4, 2024, 9:00 AM
Amino acids that are not glycine (the simplest amino acid which lacks a chiral center due to its two hydrogen atoms attached to the central carbon) can have diastereomers if they possess more than one chiral center. Standard amino acids usually have one chiral center (the α-carbon), making them enantiomers when compared in pairs, but not diastereomers. However, amino acids such as threonine and isoleucine, which contain two chiral centers, can have diastereomers. Diastereomers are stereoisomers that are not mirror images of each other, differing in configuration at one or more (but not all) of the chiral centers. While most amino acids incorporated into proteins by ribosomes in eukaryotic cells are in the L-configuration (with the exception of glycine), these additional chiral centers in specific amino acids allow for the formation of diastereomeric forms with distinct three-dimensional structures and properties.
0
Q
how to do your own yarn dreads
BrookLeighton
NortonSmith
Release Time:
July 30, 2024, 3:54 PM
Creating yarn dreads involves selecting the right type of yarn (acrylic works best for its durability and resemblance to natural hair), cutting it to the desired length, and then folding these lengths in half to create a loop at the midpoint. This loop is used to attach the yarn to a small section of your own hair close to the scalp using a crochet hook or similar tool. After securing, you braid the yarn into your natural hair to integrate it seamlessly. Using a method such as twisting or backcombing can increase the dreadlock effect, and sealing the ends can be done using a steamer or hot water, depending on the yarn’s heat tolerance. This DIY approach allows for customization in terms of color, length, and thickness, providing a versatile, non-permanent alternative to traditional dreadlocks.
0
Q
what do amino acids do for your workout
BrookLeighton
ArlenSam
Release Time:
July 28, 2024, 1:02 PM
Amino acids, the building blocks of proteins, play a crucial role in various aspects of your workout. They aid in muscle repair and recovery by stimulating protein synthesis, the process by which your body repairs damaged muscles and builds new muscle tissue. Essential amino acids, particularly branched-chain amino acids (BCAAs) like leucine, isoleucine, and valine, are pivotal for muscle health. These BCAAs can also help reduce fatigue during exercise by mitigating the production of serotonin, which can lead to a feeling of tiredness. Furthermore, amino acids can support endurance, enabling you to train harder and longer. Incorporating amino acids through diet or supplementation before or after your workout can optimize muscle function, enhance recovery, and potentially improve performance.
0
Q
where is polyvinyl alcohol found
BrookLeighton
WillieBilly
Release Time:
July 23, 2024, 1:03 AM
Polyvinyl alcohol (PVA) is a versatile, water-soluble synthetic polymer found widely across various industries. It serves as a key ingredient in the production of polyvinyl acetate for adhesives, paints, and coatings, and is also utilized in textile sizing to strengthen yarn. Moreover, PVA finds applications in the packaging industry, especially in water-soluble films used for environmentally friendly packaging solutions such as detergent pods. Its biocompatibility has led to uses in biomedical fields, including as a component in contact lens solutions and drug delivery systems. Additionally, in the food industry, PVA is used as a film coating agent for supplements and pills. Its presence in everyday products, from craft glues to laundry pods and even some cosmetics, underscores its widespread utility.
0
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