CH 5 CQ
... c) Cellulose has beta-glycosidic linkages; starch-digesting enzymes cleave only alpha-glycosidic linkages. d) Cellulose has beta-galactoside linkages that only bacterial beta-galactosidases can cleave. e) Cellulose fibers are covalently cross-linked; starch-digesting enzymes cannot cleave these cros ...
... c) Cellulose has beta-glycosidic linkages; starch-digesting enzymes cleave only alpha-glycosidic linkages. d) Cellulose has beta-galactoside linkages that only bacterial beta-galactosidases can cleave. e) Cellulose fibers are covalently cross-linked; starch-digesting enzymes cannot cleave these cros ...
Proteins and Enzymes (p
... product can be achieved. Each step is catalyzed by a specific enzyme. When the end product is made in a sufficient quantity, the assembly line is shut down. This is usually done by inhibiting the action of the enzyme in the first step of the pathway. This is an example of an allosteric enzyme. The h ...
... product can be achieved. Each step is catalyzed by a specific enzyme. When the end product is made in a sufficient quantity, the assembly line is shut down. This is usually done by inhibiting the action of the enzyme in the first step of the pathway. This is an example of an allosteric enzyme. The h ...
Lecture 27
... 7-bp stem including a 5’ terminal nucleotid that may contain non-Watson-Crick base pairs (G-U) -acceptor or amino acid stem. ...
... 7-bp stem including a 5’ terminal nucleotid that may contain non-Watson-Crick base pairs (G-U) -acceptor or amino acid stem. ...
A summary of amino acid metabolism based on amino acid structure
... before it is converted to any other intermediate of the Krebs cycle, pyruvate or acetyl CoA Whether an amino acid with four carbons in a row is first catabolized to oxaloacetate or succinyl C o A also relates to the structure of the amino acid. The more reduced of these amino acids contain more than ...
... before it is converted to any other intermediate of the Krebs cycle, pyruvate or acetyl CoA Whether an amino acid with four carbons in a row is first catabolized to oxaloacetate or succinyl C o A also relates to the structure of the amino acid. The more reduced of these amino acids contain more than ...
Camp 1
... • Higher fatty acids, for example C18 (stearic acid), are obtained by addition of one or more additional C2 fragments by a different enzyme system. • Unsaturated fatty acids are synthesized from saturated fatty acids by enzyme-catalyzed oxidation at the appropriate point on the hydrocarbon chain. • ...
... • Higher fatty acids, for example C18 (stearic acid), are obtained by addition of one or more additional C2 fragments by a different enzyme system. • Unsaturated fatty acids are synthesized from saturated fatty acids by enzyme-catalyzed oxidation at the appropriate point on the hydrocarbon chain. • ...
1 Confusion from last week: Purines and Pyrimidines
... Required cofactors are called “coenzymes” and are often “carriers” of functional groups: – Coenzyme A carries acetyl group – Biotin carries a carboxyl group (COO) ...
... Required cofactors are called “coenzymes” and are often “carriers” of functional groups: – Coenzyme A carries acetyl group – Biotin carries a carboxyl group (COO) ...
File
... Nucleotides: Organic molecules that serve as the building blocks (monomers) of nucleic acids, and are made up of a phosphate group, a sugar and a nitrogenous base ...
... Nucleotides: Organic molecules that serve as the building blocks (monomers) of nucleic acids, and are made up of a phosphate group, a sugar and a nitrogenous base ...
Document
... Gene – a section of DNA controlling the making of specific proteins Proteins – substances that determine our physical appearance Amino acid – a chain of these make up a protein Replication – the copying of a DNA molecule mRNA – a chemical used to read the DNA in the nucleus which takes the ...
... Gene – a section of DNA controlling the making of specific proteins Proteins – substances that determine our physical appearance Amino acid – a chain of these make up a protein Replication – the copying of a DNA molecule mRNA – a chemical used to read the DNA in the nucleus which takes the ...
Single-choice questions: (34 points) l. Enzymes are biological
... D) The major contribution to the characteristic absorption of light at 280 run by proteins is the phenylalanine R group. E) The presence of a ring structure in its R group determines whether or not an amino acid is aromatic. ...
... D) The major contribution to the characteristic absorption of light at 280 run by proteins is the phenylalanine R group. E) The presence of a ring structure in its R group determines whether or not an amino acid is aromatic. ...
Mutations, Mutagenesis, and Repair
... Removal of nitrogenous bases Alteration of nitrogenous bases Addition or deletion of nucleotides Single strand breaks Double strand breaks Crosslinking—covalent linkage between bases ...
... Removal of nitrogenous bases Alteration of nitrogenous bases Addition or deletion of nucleotides Single strand breaks Double strand breaks Crosslinking—covalent linkage between bases ...
BCHEM 254 – METABOLISM IN HEALTH AND DISEASES II Lecture
... Nitrogen Bases: There are two kinds of nitrogen-containing bases in nucleic acids: purines and pyrimidines. Purines consist of two fused nitrogen-containing rings with a total of nine ring atoms. Pyridmidines have only a six-membered nitrogencontaining ring. Purines and pyrimidines are "flat", hydr ...
... Nitrogen Bases: There are two kinds of nitrogen-containing bases in nucleic acids: purines and pyrimidines. Purines consist of two fused nitrogen-containing rings with a total of nine ring atoms. Pyridmidines have only a six-membered nitrogencontaining ring. Purines and pyrimidines are "flat", hydr ...
R N A & PROTEIN SYNTHESIS
... taken to the cytosol • In the cytosol, this code must be read so amino acids can be assembled to make polypeptides (proteins) • This process is called PROTEIN SYNTHESIS ...
... taken to the cytosol • In the cytosol, this code must be read so amino acids can be assembled to make polypeptides (proteins) • This process is called PROTEIN SYNTHESIS ...
March10NaturalSelection
... RNA = ribonucleic acid (T replaced by U) Many many types: messenger (mRNA), transfer (tRNA), ribosomal (rRNA), others being discovered (microRNAs) DNA (info storage)RNA (info transfer)protein (work) Segment of DNA is unwound An mRNA strand is created from the template strand of the DNA mRNA capp ...
... RNA = ribonucleic acid (T replaced by U) Many many types: messenger (mRNA), transfer (tRNA), ribosomal (rRNA), others being discovered (microRNAs) DNA (info storage)RNA (info transfer)protein (work) Segment of DNA is unwound An mRNA strand is created from the template strand of the DNA mRNA capp ...
Leukaemia Section t(3;11)(q25;q23) Atlas of Genetics and Cytogenetics in Oncology and Haematology
... 76 kDa; enzyme of the de novo synthesis of guanine nucleotides: amidotransferase that catalyzes the amination of xanthosine 5 prime monophosphate to form GMP. ...
... 76 kDa; enzyme of the de novo synthesis of guanine nucleotides: amidotransferase that catalyzes the amination of xanthosine 5 prime monophosphate to form GMP. ...
SECTION D What Does DNA Do?
... There are several different categories of proteins. Most proteins function as enzymes to regulate the speed of particular chemical reactions. Every cell contains hundreds of different enzymes that work together to release energy from food molecules and to use energy to build new cellular materials. ...
... There are several different categories of proteins. Most proteins function as enzymes to regulate the speed of particular chemical reactions. Every cell contains hundreds of different enzymes that work together to release energy from food molecules and to use energy to build new cellular materials. ...
05 Cliff Note Version
... chain will interact and form hydrogen bonds. This is called the secondary structure of the protein. Typical secondary structures are a coil called an helix and a folded structure called a pleated sheet. (pg 82) ...
... chain will interact and form hydrogen bonds. This is called the secondary structure of the protein. Typical secondary structures are a coil called an helix and a folded structure called a pleated sheet. (pg 82) ...
Biosynthesis
Biosynthesis (also called biogenesis or anabolism) is a multi-step, enzyme-catalyzed process where substrates are converted into more complex products in living organisms. In biosynthesis, simple compounds are modified, converted into other compounds, or joined together to form macromolecules. This process often consists of metabolic pathways. Some of these biosynthetic pathways are located within a single cellular organelle, while others involve enzymes that are located within multiple cellular organelles. Examples of these biosynthetic pathways include the production of lipid membrane components and nucleotides.The prerequisite elements for biosynthesis include: precursor compounds, chemical energy (e.g. ATP), and catalytic enzymes which may require coenzymes (e.g.NADH, NADPH). These elements create monomers, the building blocks for macromolecules. Some important biological macromolecules include: proteins, which are composed of amino acid monomers joined via peptide bonds, and DNA molecules, which are composed of nucleotides joined via phosphodiester bonds.