(Multiple coenzymes on the left may match to the same reaction on the right. Some reactions on the right may have no corresponding coenzyme.) Biotin Thiamine pyrophosphate Flavin adenine dinucleotide Tetrahydrofolic Acyl transfer Clear All Oxidation-reduction Transamination One-carbon unit transfer Carboxylation Aldehyde transfer Previous Next

(Multiple coenzymes on the left may match to the same reaction on the right. Some reactions on the right may have no corresponding coenzyme.) Biotin Thiamine pyrophosphate Flavin adenine dinucleotide Tetrahydrofolic Acyl transfer Clear All Oxidation-reduction Transamination One-carbon unit transfer Carboxylation Aldehyde transfer Previous Next

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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The use of co-factors in catalysis : 3.1 Metal-activated enzymes and metalloenzymes definition for each term 3.2 Cofactors Cofactor Origin Structure Catalytic role Nicotinamide nucleotides Flavin nucleotides Adenosine phosphates Coenzyme A Biotin Coenzyme B12 Summaries the characteristics of co-factors using this table. Use both the textbook and other online sources such as Wikipedia to find the information. Under origin, report the precursor molecule e.g. “niacin” and also try to find the Vitamin X name for each compound, e.g. “Vitamin B3”. Under structure, identify the unique structural properties that allow each cofactor to perform the function it does Under catalytic role, indicate for which reactions are each of the cofactors important
His388 Glu357 His388 Glu357 Ring opening Proton HO HO abstraction HO но- G6P He NH- NH His388 His388 His388 Glu357 Glu357 Glu357 HO но HO но- но OH cis-enediol F6P Ring closure intermediate OH Describe the mechanism shown above for phosphoglucose isomerase. Describe the chemistry of each step • How the enzyme appears or might facilitate the chemistry How the enzyme increases the reaction rate.
a What would be the appropriate name for an enzyme that catalyzes each of the following reactions: b H3C iOH OH NH₂ alanine ligase alanine oxidoreductase alanine isomerase alanine transferase OH H3C CH3 H3C NO₂ propanone transferase propan-2-ol hydrolase propan-2-ol oxidoreductase propan-2-ol isomerase OH H3C CH3
Given the following reaction, identify the class and subclass of the enzyme involved. H. CH2OH H-C-OH C=0 но-с-н но-с-н H-C-OH H-C-OH H-C-OH H-C-OH CH2OPO,2 CH2OPO,2- Class: [ Select] [ Select ] Ligase Hydrolase Lyase Subcla Transferase Isomerase Oxidoreductase
Transamination reactions typically involve which of the following (select all that apply)? O almidine linkage/Schiff base O biotin O alpha-keto acid O pyridoxal phosphate zymogens O glutamate dehydrogenase
The use of co-factors in catalysis: Cofactors Cofactor Origin: Structure: Catalytic role: Nicotinamide nucleotides Flavin nucleotides Adenosine phosphates Coenzyme A Biotin Coenzyme B12 Summaries the characteristics of co-factors using this table. Use both the textbook and other online sources such as Wikipedia to find the information. Under origin, report the precursor molecule e.g. “niacin” and also try to find the Vitamin X name for each compound, e.g. “Vitamin B3”. Under structure, identify the unique structural properties that allow each cofactor to perform the function it does Under catalytic role, indicate for which reactions are each of the cofactors important
Based on the image below, select the correct statement HN Aspartate Rib-P Inosinate (IMP) IMP H₂O OOC-CH₂- COO NH Fumarate N 274 adenylosuccinate lyase Rib-P Adenylosuccinate GTP GDP + P₁ adenylosuccinate IMP synthetase NAD+ NADH + H+ dehydrogenase Figure 22-36 Lehninger Principles of Biochemistry, Sixth Edition ©2013 W. H. Freeman and Company H HN H -N Gin Rib P Xanthylate (XMP) NH₂ Rib P Adenylate (AMP) Glu ATP AMP + PP₁ XMP-glutamine amidotransferase HN H₂N O GTP is phosphorylated in the conversion of IMP to GMP GTP is phosphorylated in the convertion of IMP to AMP GTP is dephosphorylated in the conversion of IMP to GMP O GTP is dephosphorylated in the conversion of IMP to AMP Rib-P Guanylate (GMP) GMP
Match each of the enzymes involved in de novo pyrimidine synthesis with the correct description: _______ Dihydroorotate dehydrogenase _______ UMP synthase_______ Carbamoyl phosphate synthetase II _______ TMP synthase _______ CTP synthetase_______ Aspartate transcarbamoylase _______ PRPP synthetase (A) attaches an aspartate to an activated carbamoyl molecule(B) bifunctional enzyme that combines a nitrogenase pyrimidine ring to an activated ribose(C) catalyzes the formation of the activated ribose sugar(D) uses glutamine to add an amine to a preformed nucleotide(E) produces the first cyclic nitrogenase ring during de novo pyrimidine synthesis(F) combines bicarbonate and nitrogen from glutamine in the first step of pyrimidine ring synthesis (G) uses a folate derivative to add a methyl group to a preformed nucleotide
uizzes/67365/take Based on the image below, select the correct statements. Note: There may be more than 1 correct response. I Ribose 5-phosphate ribose phosphate pyrophosphokinase (PRPP synthetase) glutamine-PRPP amidotransferase adenylosuccinate synthetase AMP > 5-Phosphoribosylamine I adenylosuccinate PRPP lyase 9 steps Adenylosuccinate AMP IMP <-- ADP - AMP <-- GMP <-- IMP IMP dehydrogenase <- GMP - XMP ADP ATP GMP يمد XMP-glutamine amidotransferase Increased levels of ADP inhibit the production of PRPP. Increased levels of GMP inhibit the production of XMP. O Increased ADP activates PRPP synthase to increase PRPP levels. Increased IMP activates glutamine-PRPP amidotransferase to further increase IMP levels. 8 OBC
The enzyme that catalyzes reaction below can be classified as: CoO COO NAD+ NADH + H* Но- | malate -C- H-Ć- dehydrogenase Охaloacetate Malate isomerase lyase hydrolase oxidoreductase ligase transferase
The following are coenzymes or cofactors involved in enzymatic reactions. Identify the biochemical role that each plays within a biochemical transformation: Cofactor/Coenzyme Biochemical Role Thiamine pyrophosphate Coenzyme A Adenosine triphosphate Heme Lipoamide Tetrahydromethanopterin
Describe the biochemical role of coenzyme Q10 and how supplementation may impact metabolism. Be sure to address the key terms listed below as part of your discussion; you may address additional etiologies as well. coenzyme Q Complex I Complex II Complex III ubiquinone ubiquinol Electron transport chain Oxidative phosphorylation Reactive oxygen species