Biochemistry - Textbooks Online
... The cell is enveloped and thus separated from its surroundings by a thin wall contains a rigid framework of polysaccharide chains crosslinked with short peptide chains. Its outer surface is coated with lipopolysaccharide. Cell membrane is also called as plasma membrane (or) plasma lemma. The pili, n ...
... The cell is enveloped and thus separated from its surroundings by a thin wall contains a rigid framework of polysaccharide chains crosslinked with short peptide chains. Its outer surface is coated with lipopolysaccharide. Cell membrane is also called as plasma membrane (or) plasma lemma. The pili, n ...
Enzymes - Website of Neelay Gandhi
... amt of enzyme needed for 1 micromol of substrate into products in one minute (std conditions) mole of substrate consumed or product formed per second Enzyme activity / protein concentration (for enzyme purity) measure of maximal catalytic activity Number of substrate molecules converted into produce ...
... amt of enzyme needed for 1 micromol of substrate into products in one minute (std conditions) mole of substrate consumed or product formed per second Enzyme activity / protein concentration (for enzyme purity) measure of maximal catalytic activity Number of substrate molecules converted into produce ...
Chapter 7 - Macmillan Learning
... and from other cells The physical environment is full of signals. Our sense organs allow us to respond to light, odors and tastes (chemical signals), temperature, touch, and sound. Bacteria and protists can respond to minute chemical changes in their environments. Plants respond to light as a signal ...
... and from other cells The physical environment is full of signals. Our sense organs allow us to respond to light, odors and tastes (chemical signals), temperature, touch, and sound. Bacteria and protists can respond to minute chemical changes in their environments. Plants respond to light as a signal ...
Advanced
... 3. Compare the structures of Green Fluorescent Protein (GFP) and DsRed. In a fresh Chimera session load the GFP structure by choosing File… Fetch by ID… and type 1ema in the box Now load the DsRed structure as follows: Menu File… Fetch by ID… and type 1g7k in the box. Superpose the 2 structures by c ...
... 3. Compare the structures of Green Fluorescent Protein (GFP) and DsRed. In a fresh Chimera session load the GFP structure by choosing File… Fetch by ID… and type 1ema in the box Now load the DsRed structure as follows: Menu File… Fetch by ID… and type 1g7k in the box. Superpose the 2 structures by c ...
SURVEY AND SUMMARY Origins of tmRNA: the
... mRNA. A particular RNA performs this process: tmRNA associated with Small protein B (SmpB). tmRNA is a hybrid molecule carrying out both transfer and messenger RNA activities, and its total length varies between about 260 and 430 nucleotides, depending on the cell species (Figure 4). It is always am ...
... mRNA. A particular RNA performs this process: tmRNA associated with Small protein B (SmpB). tmRNA is a hybrid molecule carrying out both transfer and messenger RNA activities, and its total length varies between about 260 and 430 nucleotides, depending on the cell species (Figure 4). It is always am ...
Supplementary Information 410 475
... Comparison of vertebrate TSG amino acid sequences. (A) Alignment of TSG amino acid sequences for human (hTSG), mouse (mTSG), chick (cTSG), Xenopus (xTSG), and zebrafish (zTSG) with Drosophila TSG (dTSG) amino acid sequences6 and those of two recently reported gene products of the Drosophila genome ( ...
... Comparison of vertebrate TSG amino acid sequences. (A) Alignment of TSG amino acid sequences for human (hTSG), mouse (mTSG), chick (cTSG), Xenopus (xTSG), and zebrafish (zTSG) with Drosophila TSG (dTSG) amino acid sequences6 and those of two recently reported gene products of the Drosophila genome ( ...
Biochemistry, Cell and Molecular Biology Test Practice Book
... the subject who are on undergraduate and graduate faculties in different types of institutions and in different regions of the United States and Canada. In selecting members for each committee, the GRE Program seeks the advice of appropriate professional associations in the subject. The content and ...
... the subject who are on undergraduate and graduate faculties in different types of institutions and in different regions of the United States and Canada. In selecting members for each committee, the GRE Program seeks the advice of appropriate professional associations in the subject. The content and ...
A Study of Phylogenetic Relationships and Homology of
... overall species phenotype. For example, both humans and chimpanzees have many similar anatomical characters and functions, so we might expect their proteins to be similar, regardless of whether they are genealogically related or not. However, we can compare the sequences of basic genes that are used ...
... overall species phenotype. For example, both humans and chimpanzees have many similar anatomical characters and functions, so we might expect their proteins to be similar, regardless of whether they are genealogically related or not. However, we can compare the sequences of basic genes that are used ...
Kjeldahl Method for Determination of Nitrogen
... within the cake. These can react violently when concentrated base is added in the distillation process. A certain amount of salting out can be managed by diluting the digest with water while it is still somewhat warm, but not too hot. Several catalysts have been employed by Kjeldahl chemists over th ...
... within the cake. These can react violently when concentrated base is added in the distillation process. A certain amount of salting out can be managed by diluting the digest with water while it is still somewhat warm, but not too hot. Several catalysts have been employed by Kjeldahl chemists over th ...
PSI
... [PSI+] is inherited in a non-Mendelian fashion and can be transmitted from one cell to another with cytoplasm No extrachromosomal DNA or RNA have been found to be associated with [PSI+] [PSI+] can be efficiently eliminated by protein denaturing agent, guanidine hydrochloride, or by exposure to ...
... [PSI+] is inherited in a non-Mendelian fashion and can be transmitted from one cell to another with cytoplasm No extrachromosomal DNA or RNA have been found to be associated with [PSI+] [PSI+] can be efficiently eliminated by protein denaturing agent, guanidine hydrochloride, or by exposure to ...
The Lamin B Receptor of the Nuclear Envelope Inner Membrane: A
... integral membrane proteins that may be involved in the anchorage of these structures. In support of this notion, several integral membrane proteins associated with these structures have been identified and localized to specific nuclear envelope membrane domains. An integral membrane glycoprotein (gp ...
... integral membrane proteins that may be involved in the anchorage of these structures. In support of this notion, several integral membrane proteins associated with these structures have been identified and localized to specific nuclear envelope membrane domains. An integral membrane glycoprotein (gp ...
to the PDF file. - CURVE
... and mammals must obtain L-methionine through the diet. Conversely plants and bacteria synthesize L-cysteine de novo and convert it to L-homocysteine and, ultimately, Lmethionine. The enzymes of the bacterial and plant transsulfuration pathway are cystathionine γ-synthase (CGS), which condenses O-suc ...
... and mammals must obtain L-methionine through the diet. Conversely plants and bacteria synthesize L-cysteine de novo and convert it to L-homocysteine and, ultimately, Lmethionine. The enzymes of the bacterial and plant transsulfuration pathway are cystathionine γ-synthase (CGS), which condenses O-suc ...
"An Introduction to Sequence Similarity ("Homology") Searching". In
... first column are initialized, the entire matrix can be filled following the simple rule shown in Figure 3.1.1, and the score of the best possible alignment of the two sequences is the element in the lower right corner of the matrix, S(n,m). The actual alignment that gives that score can be found by ...
... first column are initialized, the entire matrix can be filled following the simple rule shown in Figure 3.1.1, and the score of the best possible alignment of the two sequences is the element in the lower right corner of the matrix, S(n,m). The actual alignment that gives that score can be found by ...
30 Synthesis of Glycosides, Lactose, Glycoproteins and Glycolipids
... UDP-galactose are used for glycosyltransferase reactions in many systems. Lactose, for example, is synthesized from UDP-galactose and glucose in the mammary gland. UDP-glucose also can be oxidized to form UDP-glucuronate, which is used to form glucuronide derivatives of bilirubin and xenobiotic comp ...
... UDP-galactose are used for glycosyltransferase reactions in many systems. Lactose, for example, is synthesized from UDP-galactose and glucose in the mammary gland. UDP-glucose also can be oxidized to form UDP-glucuronate, which is used to form glucuronide derivatives of bilirubin and xenobiotic comp ...
Ribosomal proteins L5 and L15 Ivailo Simoff in vivo
... The tighter you squeeze, the less you have. Zen Saying ...
... The tighter you squeeze, the less you have. Zen Saying ...
Enzymes
... • To respond to changing conditions and cellular needs, enzyme activity requires very sensitive controls: – activation of zymogens – allosteric regulation – genetic control ...
... • To respond to changing conditions and cellular needs, enzyme activity requires very sensitive controls: – activation of zymogens – allosteric regulation – genetic control ...
Metabolism and Nutrition
... Amino acids, under the influence of growth hormone and insulin, enter body cells by active transport. Inside cells, amino acids are synthesized into proteins ...
... Amino acids, under the influence of growth hormone and insulin, enter body cells by active transport. Inside cells, amino acids are synthesized into proteins ...
sequence-structure relationship - HAL
... conformational classes was tackled by multivariate methods, e.g., canonical correlation analysis. It points out the presence of seven amino acid equivalence classes showing high propensities for preferential local structures. In the same way, definition of “contrast factors” based on sequence-struct ...
... conformational classes was tackled by multivariate methods, e.g., canonical correlation analysis. It points out the presence of seven amino acid equivalence classes showing high propensities for preferential local structures. In the same way, definition of “contrast factors” based on sequence-struct ...
Full-Text PDF
... and helping in catalysis does not seem a viable concept. On the other hand, the idea of catalytic protein existing without RNA storing the polypeptide sequences, which have catalytic activity, and organizing the production of these sequences, also does not seem a viable concept. Here we argue for a ...
... and helping in catalysis does not seem a viable concept. On the other hand, the idea of catalytic protein existing without RNA storing the polypeptide sequences, which have catalytic activity, and organizing the production of these sequences, also does not seem a viable concept. Here we argue for a ...
protease (NS34A) and an RNA polymerase
... modified such that it could not act directly as a substrate in ubiquitination. This implies that phospho-ubiquitin binds to and activates parkin separately from its role as a substrate. Clues as to how this could be achieved might be gleaned from recent crystallographic analyses of parkin11,12. A ph ...
... modified such that it could not act directly as a substrate in ubiquitination. This implies that phospho-ubiquitin binds to and activates parkin separately from its role as a substrate. Clues as to how this could be achieved might be gleaned from recent crystallographic analyses of parkin11,12. A ph ...
Bio2 Gene prediction DNA structure Codons and ORFs Predicting
... of this approach: • HMMs can be visualised as finite state machines with a begin and an end state. • FSMs move through a series of state emitting some kind of output report either at the end or during a transition from one state to another. ...
... of this approach: • HMMs can be visualised as finite state machines with a begin and an end state. • FSMs move through a series of state emitting some kind of output report either at the end or during a transition from one state to another. ...
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.