Tryptophan synthase uses an atypical mechanism to achieve
... Figure 1. Overview of the TrpS catalytic cycle. The α-subunit (blue) cleaves IGP in a retroaldol reaction. Indole is channeled into the β-subunit (orange), where it reacts with L-Ser or L-Thr to generate L-Trp or β-MeTrp, respectively. To probe whether this reactivity profile is general to TrpS, we ...
... Figure 1. Overview of the TrpS catalytic cycle. The α-subunit (blue) cleaves IGP in a retroaldol reaction. Indole is channeled into the β-subunit (orange), where it reacts with L-Ser or L-Thr to generate L-Trp or β-MeTrp, respectively. To probe whether this reactivity profile is general to TrpS, we ...
Chemical Classification of Cyclic Depsipeptides
... presenting the identification and structural elucidation of newfound CDPs, sometimes complemented with limited biological activity data. Upon their discovery, these compounds are named very arbitrarily: for some, this is (i) after the geographic location where they were first found (e.g. sansalvamid ...
... presenting the identification and structural elucidation of newfound CDPs, sometimes complemented with limited biological activity data. Upon their discovery, these compounds are named very arbitrarily: for some, this is (i) after the geographic location where they were first found (e.g. sansalvamid ...
Angiotensin I-converting enzyme-inhibitory peptide fractions
... Angiotensin I-converting enzyme (ACE; peptidylpeptide hydrolase, EC 3.4.15.1) plays an important role in the regulation of blood pressure as well as in cardiovascular function. ACE generates the powerful vasoconstrictor angiotensin II that removes the C-terminal dipeptide from the lysate of the prec ...
... Angiotensin I-converting enzyme (ACE; peptidylpeptide hydrolase, EC 3.4.15.1) plays an important role in the regulation of blood pressure as well as in cardiovascular function. ACE generates the powerful vasoconstrictor angiotensin II that removes the C-terminal dipeptide from the lysate of the prec ...
VITAMINS
... Vitamin E is absorbed along with fat in the small intestine. Bile salts are necessary for the absorption. In the liver, it is incorporated into lipoproteins (VLDL and LDL) and transported. Vitamin E is stored in adipose tissue, liver and muscle. The normal plasma level of tocopherol in less than 1 m ...
... Vitamin E is absorbed along with fat in the small intestine. Bile salts are necessary for the absorption. In the liver, it is incorporated into lipoproteins (VLDL and LDL) and transported. Vitamin E is stored in adipose tissue, liver and muscle. The normal plasma level of tocopherol in less than 1 m ...
Harvard University General Chemistry Practice Problems “The
... Ozone (O3) can be prepared in the laboratory by passing an electrical discharge through a quantity of oxygen gas (O2): 3 O2 (g) → 2 O 3 (g) An evacuated steel vessel with a volume of 10.00 liters is filled with 32.00 atm of pure O2 at 25°C. An electric discharge is passed through the vessel, causing ...
... Ozone (O3) can be prepared in the laboratory by passing an electrical discharge through a quantity of oxygen gas (O2): 3 O2 (g) → 2 O 3 (g) An evacuated steel vessel with a volume of 10.00 liters is filled with 32.00 atm of pure O2 at 25°C. An electric discharge is passed through the vessel, causing ...
Trilon® M types - Save on Citric
... in favour of the soluble species in order for the scale to dissolve. This can be achieved by ...
... in favour of the soluble species in order for the scale to dissolve. This can be achieved by ...
Urinary Organic Acids - Peirson Center for Children
... Organic Acids Profile, the interpretation is simplified by focussing on the fact that the data provides answers to four basic questions of clinical relevance: 1. Is the production of mitochondrial energy adversely affected? 2. Are functional nutritional deficiencies present? 3. Are symptoms relat ...
... Organic Acids Profile, the interpretation is simplified by focussing on the fact that the data provides answers to four basic questions of clinical relevance: 1. Is the production of mitochondrial energy adversely affected? 2. Are functional nutritional deficiencies present? 3. Are symptoms relat ...
Proton transfer pathways and mechanism in bacterial reaction centers Minireview
... The structure of the RC from Rb. sphaeroides between the c surface and the catalytic Q3 B site is shown in Fig. 1 [18]. The two quinone molecules, QA and QB , are separated by a disN (edge to edge) through hydrogen bonding to the tance of 15 A His^Fe^His metal link. The region of the protein near QB ...
... The structure of the RC from Rb. sphaeroides between the c surface and the catalytic Q3 B site is shown in Fig. 1 [18]. The two quinone molecules, QA and QB , are separated by a disN (edge to edge) through hydrogen bonding to the tance of 15 A His^Fe^His metal link. The region of the protein near QB ...
CO2 and O2 Distribution in Rubisco Suggests the
... conclusive picture how small nonpolar ligands move from the surface of an enzyme toward the active site. Diffusion and transport of dioxygen (O2) in proteins have been investigated to some extent (e.g., refs 1−7), but the migration of carbon dioxide (CO2) in proteins has attracted less attention. The ...
... conclusive picture how small nonpolar ligands move from the surface of an enzyme toward the active site. Diffusion and transport of dioxygen (O2) in proteins have been investigated to some extent (e.g., refs 1−7), but the migration of carbon dioxide (CO2) in proteins has attracted less attention. The ...
Understanding fatty acid synthesis in developing - Shachar
... during the reaction catalyzed by plastidic NADP-dependent malic enzyme (EC 1.1.1.40) and one mole of NADH by pyruvate dehydrogenase (Smith et al., 1992; Pleite et al., 2005). Reductant can also be generated by the OPPP where imported glucose 6-P is oxidized to stimulate fatty acid synthesis in isola ...
... during the reaction catalyzed by plastidic NADP-dependent malic enzyme (EC 1.1.1.40) and one mole of NADH by pyruvate dehydrogenase (Smith et al., 1992; Pleite et al., 2005). Reductant can also be generated by the OPPP where imported glucose 6-P is oxidized to stimulate fatty acid synthesis in isola ...
Fragmentation and charge transfer in gas
... A.A. Shvartsburg et al. / Chemical Physics Letters 350 (2001) 216±224 ...
... A.A. Shvartsburg et al. / Chemical Physics Letters 350 (2001) 216±224 ...
U4L24 Carbo Disposal
... chain, the reduction/dehydration/reduction steps, moving the fatty acid to the right site and finally releasing it as FA-CoA ...
... chain, the reduction/dehydration/reduction steps, moving the fatty acid to the right site and finally releasing it as FA-CoA ...
Evolution - Amino Acid wksht
... Proteins are made of amino acids. DNA determines what sequence these amino acids must be in to build the protein. Scientists can examine the amino acid sequence of particular protein molecules found in vertebrates to determine the degree of similarity between species. Even organisms that appear to h ...
... Proteins are made of amino acids. DNA determines what sequence these amino acids must be in to build the protein. Scientists can examine the amino acid sequence of particular protein molecules found in vertebrates to determine the degree of similarity between species. Even organisms that appear to h ...
INVESTIGATING THE STABILITY OF NITRIC OXIDE TEMPERATURE
... upper levels of protein folding. Since the function of a protein relies on its ability to fold into a stable structure, the primary structure also plays a vital role in protein function. The primary structure is comprised of a linear, unbranched polymer chain consisting of repeating amino acid units ...
... upper levels of protein folding. Since the function of a protein relies on its ability to fold into a stable structure, the primary structure also plays a vital role in protein function. The primary structure is comprised of a linear, unbranched polymer chain consisting of repeating amino acid units ...
M.Sc Chemistry - Manonmaniam Sundaranar University
... Paper – 3 Physical Chemistry – I Paper – 4 Environmental Chemistry Paper – 5 Practical I – Organic Chemistry Paper – 6 Organic Chemistry – II Paper – 7 Inorganic Chemistry –II Paper – 8 Physical Chemistry – II Paper – 9 Bio-organic, Bio-inorganic and Bio- Physical Chemistry Paper – 10 Practical II – ...
... Paper – 3 Physical Chemistry – I Paper – 4 Environmental Chemistry Paper – 5 Practical I – Organic Chemistry Paper – 6 Organic Chemistry – II Paper – 7 Inorganic Chemistry –II Paper – 8 Physical Chemistry – II Paper – 9 Bio-organic, Bio-inorganic and Bio- Physical Chemistry Paper – 10 Practical II – ...
BCH 301 CARBOHYDRATE METABOLISM
... Energy Producing:- Oxidation of triosePO4 to lactate The enzymes with the exception of enolase and pyruvate decarboxylase can ...
... Energy Producing:- Oxidation of triosePO4 to lactate The enzymes with the exception of enolase and pyruvate decarboxylase can ...
CONTRIBUTIONS OF ANAEROBIC METABOLISM TO pH
... The proton balance of these pathways cannot simply be explained by proton release via ATP hydrolysis, since proton-relevant reactions, which do not directly include ATP synthesis, are involved. Other reactions deliver energy for ATP synthesis but do not affect the acid-base status. Fig. 2 shows the ...
... The proton balance of these pathways cannot simply be explained by proton release via ATP hydrolysis, since proton-relevant reactions, which do not directly include ATP synthesis, are involved. Other reactions deliver energy for ATP synthesis but do not affect the acid-base status. Fig. 2 shows the ...
The Migration Chemistry of Neptunium
... Man-made actinides mostly in the form of plutonium isotopes have been introduced into the environment /5/ primarily through the atmospheric nuclear weapons tests, which took place in the period between 1950 and 1963. Disintegration of °*Pu power sources has also yielded some actinides, and finally a ...
... Man-made actinides mostly in the form of plutonium isotopes have been introduced into the environment /5/ primarily through the atmospheric nuclear weapons tests, which took place in the period between 1950 and 1963. Disintegration of °*Pu power sources has also yielded some actinides, and finally a ...
as a PDF
... forms are the most studied, with amine catalysts being more easily available than their phosphorus-containing counterparts, due mainly to the natural abundance. There is no natural P-containing chiral substrate for catalytic use, and consequently all of these catalysts are man-made [49]. One particu ...
... forms are the most studied, with amine catalysts being more easily available than their phosphorus-containing counterparts, due mainly to the natural abundance. There is no natural P-containing chiral substrate for catalytic use, and consequently all of these catalysts are man-made [49]. One particu ...
Efficient seeding techniques for protein similarity search
... keys (or corresponding hash table entries) with which it can form a hit. For example, in a standard Blastp setting (Blosum62 scoring matrix with threshold 11 for accumulative score of 3 contiguous positions) a 3-letter key hits on average 19.34 distinct keys, i.e. requires that many accesses to the ...
... keys (or corresponding hash table entries) with which it can form a hit. For example, in a standard Blastp setting (Blosum62 scoring matrix with threshold 11 for accumulative score of 3 contiguous positions) a 3-letter key hits on average 19.34 distinct keys, i.e. requires that many accesses to the ...
kcse chemistry questions
... Give a reason why calcium hydroxide solution is used to detect the presence of carbon dioxide gas while sodium hydroxide in NOT? a compound C4H10O_ is oxidized by excess acidified potassium permanganate to form another compound C4H8O2. The same compound C4H10O reacts with potassium to produce hydrog ...
... Give a reason why calcium hydroxide solution is used to detect the presence of carbon dioxide gas while sodium hydroxide in NOT? a compound C4H10O_ is oxidized by excess acidified potassium permanganate to form another compound C4H8O2. The same compound C4H10O reacts with potassium to produce hydrog ...
the Scanned PDF - Mineralogical Society of America
... these minerals are shown in Figure 5. The visible and near ultraviolet spectra of goethite, lepidocrocite, and maghemite are all quite similar and, except for small differences in band energies qualitatively resemble the spectrum of the Fe3+ phyllosilicate nontronite investigated by Karickhoff and B ...
... these minerals are shown in Figure 5. The visible and near ultraviolet spectra of goethite, lepidocrocite, and maghemite are all quite similar and, except for small differences in band energies qualitatively resemble the spectrum of the Fe3+ phyllosilicate nontronite investigated by Karickhoff and B ...
Ions
... Chapter 6 Why do atoms react? • It is this arrangement of electrons that imparts stability to the noble gases • All other elements react in order to achieve the same electron configuration as their nearest noble gas neighbor (8 valence e- = octet rule) • Atoms can gain, lose, or share electrons in ...
... Chapter 6 Why do atoms react? • It is this arrangement of electrons that imparts stability to the noble gases • All other elements react in order to achieve the same electron configuration as their nearest noble gas neighbor (8 valence e- = octet rule) • Atoms can gain, lose, or share electrons in ...
Metalloprotein
Metalloprotein is a generic term for a protein that contains a metal ion cofactor. A large number of all proteins are part of this category.