Chemical Messengers
... Receptors that are Ligand-Gated Ion Channels • Activation of the receptor by a first messenger (ligand) results in a conformational change of the receptor so it forms an open channel through the plasma membrane. • Because the opening of ion channels has been compared to the opening of a gate in a f ...
... Receptors that are Ligand-Gated Ion Channels • Activation of the receptor by a first messenger (ligand) results in a conformational change of the receptor so it forms an open channel through the plasma membrane. • Because the opening of ion channels has been compared to the opening of a gate in a f ...
BNP & NTPro-BNP
... ◦ Some proteins contain more than one PDZ region ◦ PDZ domains have been found in over 250 proteins across a wide range of organisms from Drasophila to Humans ◦ PDZs bind to complementary sequences at C-termini ◦ Implicated in a wide range of cellular processes ◦ – therefore an extremely useful drug ...
... ◦ Some proteins contain more than one PDZ region ◦ PDZ domains have been found in over 250 proteins across a wide range of organisms from Drasophila to Humans ◦ PDZs bind to complementary sequences at C-termini ◦ Implicated in a wide range of cellular processes ◦ – therefore an extremely useful drug ...
MetaSmart
... methionine available compared to the methionine requirement. MetaSmart is the isopropyl ester of the hydroxy analogue of methionine (HMBi). It is available in both liquid and dry formulas. ...
... methionine available compared to the methionine requirement. MetaSmart is the isopropyl ester of the hydroxy analogue of methionine (HMBi). It is available in both liquid and dry formulas. ...
Protein Synthesis
... Process in which a gene is used to build a protein resulting in the presence of a particular phenotype (physical characteristic) Phenotypic variation among organisms is due to genotypic variation (differences in the sequence of their DNA bases) Differences exist between species and within a sp ...
... Process in which a gene is used to build a protein resulting in the presence of a particular phenotype (physical characteristic) Phenotypic variation among organisms is due to genotypic variation (differences in the sequence of their DNA bases) Differences exist between species and within a sp ...
Examination III Key
... Farnesy-pyrophosphate This is made from three isoprenes (one dimethylallyl-PP and two isopentenyl-PPs), added in two identical condensation reactions. c. [2 points] What is the name of the metabolite produced by the third stage of oligomerization (before it is further modified)? Squalene This is mad ...
... Farnesy-pyrophosphate This is made from three isoprenes (one dimethylallyl-PP and two isopentenyl-PPs), added in two identical condensation reactions. c. [2 points] What is the name of the metabolite produced by the third stage of oligomerization (before it is further modified)? Squalene This is mad ...
Alkaloid
... At least 16 ATP must be hydrolyzed The ammonia (NH3) produced is either utilized by the nitrogen-fixing bacteria, or secreted into the environment In the case of symbiotic nitrogen-fixing bacteria, the NH3 is transported into adjacent host cells (where it is used in glutamine synthesis) Note that a ...
... At least 16 ATP must be hydrolyzed The ammonia (NH3) produced is either utilized by the nitrogen-fixing bacteria, or secreted into the environment In the case of symbiotic nitrogen-fixing bacteria, the NH3 is transported into adjacent host cells (where it is used in glutamine synthesis) Note that a ...
물리화학 소개
... Tiny Particles Flag Scarce Proteins One-two punch. New detection technique tows a protein into place magnetically, then signals its presence by releasing DNA. Their target was prostate-specific antigen (PSA), a protein that can indicate prostate cancer in men and that is also being investigated as a ...
... Tiny Particles Flag Scarce Proteins One-two punch. New detection technique tows a protein into place magnetically, then signals its presence by releasing DNA. Their target was prostate-specific antigen (PSA), a protein that can indicate prostate cancer in men and that is also being investigated as a ...
Proteins
... Decarboxylation is a common reaction of amino acids. An example is the conversion of L-histidine to histamine. Antihistamines act by blocking the action of histamine. N ...
... Decarboxylation is a common reaction of amino acids. An example is the conversion of L-histidine to histamine. Antihistamines act by blocking the action of histamine. N ...
01_Introduction. Structure, properties and biological functions
... composed of two types of polypeptide chains, M and H There are 5 Isozymes of LDG: H4 – heart HM3 H2M2 H3M M4 – liver, muscle ...
... composed of two types of polypeptide chains, M and H There are 5 Isozymes of LDG: H4 – heart HM3 H2M2 H3M M4 – liver, muscle ...
news and views Mechanics of the ribosome
... on a surer footing, and promise much more. At this resolution, a-helices (spirals) in the protein structures can be readily fitted to the electron-density maps of the subunits, as can most double-helical segments (around twothirds) of the rRNA’s structure. Moreover, known three-dimensional structure ...
... on a surer footing, and promise much more. At this resolution, a-helices (spirals) in the protein structures can be readily fitted to the electron-density maps of the subunits, as can most double-helical segments (around twothirds) of the rRNA’s structure. Moreover, known three-dimensional structure ...
Assignment on DNA, RNA, Transcription and Translation
... can’t get out. To solve this problem, copies of the DNA are made in a form called mRNA. The process of making mRNA from DNA is called transcription. After transcription, the mRNA copies leave the nucleus to be in the part of the cell outside the nucleus, otherwise known as the cytoplasm. mRNA can’t ...
... can’t get out. To solve this problem, copies of the DNA are made in a form called mRNA. The process of making mRNA from DNA is called transcription. After transcription, the mRNA copies leave the nucleus to be in the part of the cell outside the nucleus, otherwise known as the cytoplasm. mRNA can’t ...
Basic virology
... The presence of an envelope confers instability on the virus. Enveloped viruses are more sensitive to heat, drying, detergents, and lipid solvents such as alcohol and ether than are nonenveloped (nucleocapsid) viruses. virtually all viruses that are transmitted by the fecaloral route (those that ...
... The presence of an envelope confers instability on the virus. Enveloped viruses are more sensitive to heat, drying, detergents, and lipid solvents such as alcohol and ether than are nonenveloped (nucleocapsid) viruses. virtually all viruses that are transmitted by the fecaloral route (those that ...
Digestive Enzymes - Village Health Clinic
... improve absorption of food. Nutritionally oriented doctors often tell people to try using pancreatic enzymes with meals when they have symptoms of indigestion that cannot be attributed to a specific cause. Research has not explored whether this use of enzymes is helpful. According to one theory, all ...
... improve absorption of food. Nutritionally oriented doctors often tell people to try using pancreatic enzymes with meals when they have symptoms of indigestion that cannot be attributed to a specific cause. Research has not explored whether this use of enzymes is helpful. According to one theory, all ...
Physiology of metabolic processes in the body. Composition of diet
... Chemical score is method of rating proteins based on it's chemical composition (more specifically it's indispensable AA levels). To determine chemical score, a protein is picked as a reference and other proteins are rated relative to that reference protein. Typically, egg protein has been used as th ...
... Chemical score is method of rating proteins based on it's chemical composition (more specifically it's indispensable AA levels). To determine chemical score, a protein is picked as a reference and other proteins are rated relative to that reference protein. Typically, egg protein has been used as th ...
Proteolysis
Proteolysis is the breakdown of proteins into smaller polypeptides or amino acids. Uncatalysed, the hydrolysis of peptide bonds is extremely slow, taking hundreds of years. Proteolysis is typically catalysed by cellular enzymes called proteases, but may also occur by intra-molecular digestion. Low pH or high temperatures can also cause proteolysis non-enzymatically.Proteolysis in organisms serves many purposes; for example, digestive enzymes break down proteins in food to provide amino acids for the organism, while proteolytic processing of a polypeptide chain after its synthesis may be necessary for the production of an active protein. It is also important in the regulation of some physiological and cellular processes, as well as preventing the accumulation of unwanted or abnormal proteins in cells. Consequently, dis-regulation of proteolysis can cause diseases, and is used in some venoms to damage their prey.Proteolysis is important as an analytical tool for studying proteins in the laboratory, as well as industrially, for example in food processing and stain removal.