In this step of purine biosynthesis, which functional group gets activated by ATP Pribose NH3 ATP Carboxyaminomidazole ribonedeotide Asp ADP Fumarate Pribose S-Aminolmidazole- 4(N-succinylcarboxamide) ribonucdeotide O Carboxyaminoimidazole ribonucleotide COOH O Carboxyaminoimidazole ribonucleotide NH2 O Asp side chain COOH O Asp main chain NH2 O Asp main chain COOH
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- Which of the structures below is that of о-в-D-glucopyranosyl-(1->4)- a-D-glucoругanose CH2OH CH2OH H. OH он H Он OH OH CH2OH HOH2Ć OH он CH2OH CH2OH OH H он H он он CH2OH CH2 OH H OH он OH None of the other structures are correct.Unbranched homopolymer of N-acetyl glucosamine is : 1.Cellulose 2.Chitin 3.Curcumin 4.Concanavalin AThe anomer of a-D-glucopyranose is CH:OH он ÓH CH2OH он он он он CH,OH он он он он CH,OH он OH он ÓH ÇH;OH он он он он
- The peptide CMYLES is reacted with phenylisothiocyanate under basic conditions followed by incubation with anhydrous trifluoroacetic acid. What are the products of this reaction? PTH-CMYLES Thiazolinone derivative of cysteine, MYLES O PTH-C, PTH-M, PTH-Y, PTH-L, PTH-E, PTH-S PTH-C, MYLES PTH-S, CMYLEIdentify the structure of O-a-D-sorbopyranosyl-(24)-B-D-glucopyranose below. The following structures will help: НО Н ОН х Н H H D-sorbose Н OH CH₂OH Н Н Н OH HO Н H HO H н HO ОН Н н Н О ОН O H Н CH₂OH OH OH н 0 CH2OH Н OH Н H OH Н CH₂OH H ОН Н OH Н Н Н РО OH Н HO OH н н -O CH2O Н O H H OH н Н OH CH₂OH о CHOH H H Н Ко OH H OH Н Н OH Н OH Н OH Н CH₂OH -OCHOH H OH O CH OH Н OH Н Н CH₂OH ОН он OH OH H OH H O OH CH₂OH OH ОН Н O OH OH D-glucose Н ОН Н ОН ОНSaponify this mixed triglyceride with 3NaOH
- Name the peptide* O H O H H,'N-CH-C-N-CH-C-N-CH-C-o CH CH, CH; CH-CH, CH, SH CH, O Methionyl-leucynyl-cycteine Methionyl-leucinyl-cycteine Leucyl-methionyl-cycteinyl Methionylleucyl-cysteineAll statement true about solanaceous alkaloids except: solanaceous alkaloids are esters of the bicyclic aminoalcohol 3-hydroxytropane or of related aminoalcohols. have been modified by preparing other esters of 3-a-tropanol or making a quaternary of the nitrogen in tropanol or scopine with a methyl halide. The aminoalcohol derived from scopolamine, namely tropin, has the axial orientation of the 3-hydroxyl group but, in addition, a B-oriented epoxy group bridged across the 6,7 positions several different solanaceous alkaloids known, it has been indicated that (-)- hyoscyamine, atropine, and scopolamine are the most important.Amino acid analysis of a decapeptide gave the following residues: Ala (2), Gly, Leu, Lys (2), Met, Phe, Trp, Val Subjecting the decapeptide to various chemical/ enzymatic hydrolysis yields the following fragments: Cyanogen bromide: Leu-Ala-Met and a heptapeptide Trypsin: Phe-Ala-Lys and a heptapeptide Chymotrypsin: Gly-Val-Lys-Phe, Ala-Lys, Leu, and a tripeptide • Thermolysin: Phe-Ala-Lys, Leu-Ala-Met, and two dipeptides . Note that the intact decapeptide was used in each treatment. 1. What is the sequence of the heptapeptide produced upon treatment with trypsin? Fill each blank with the three-letter designation of the amino acid residue from the N-terminus to the C-terminus. 2. What is the sequence of the tripeptide produced upon treatment with chymotrypsin? Fill each blank with the three-letter designation of the amino acid residues from the N-terminus to the C-terminus.
- 1.Ala-Phe-Lys-Val-Val-Glu From the above polypeptide, what amino acid/s go/goes inside the cell after the following treatment: Chemotrypsin, thermolysin, then finally pepsin. What protein is left undigested? Write the primary structure of the undigested protein? 2.K-V-F-W-P-L-A-Y a.Chemotrypsin treatment b.Trypsin treatment c.Pepsin treatment d.Thermolysin treatment 3.Total acid hydrolysis of a pentapeptide complemented by total alkalinehydrolysis yields an equimolar mixture of 5 amino acids listed alphabetically, ala-cys,lys,phe,ser. N-terminal analysis with phenylisothiocyanate (PITC) generate PTH-ser. Trypsin digestion produces a tripeptide where N-terminal residue is cys and a dipeptide with ser as its N- terminal.Chemotrypsin digestion of the above tripeptide yields ala plus another dipeptide. A.What is the amino acid sequence of the tripeptide B.What is the amino acid sequence of the dipeptide derived from trypsin digestion? C.What is the primary structure of the original…Which of the structures below is that of О-а-D-glucopyranosy-(1->1)- а-D-glucoругanoside CH2OH CH2OH O. H H. он H. он H OH ÓH CH2OH HOH2 H. CH2OH CH2OH O. H H. он он H OH он CH2OH H. о, он он H он онIn serine protease catalytic triad mechanism, the first and second products that leaves the active site are Carboxylic acid and amide respectively Amide and carboxylic acid respectively Ester and amide respectively Carboxylic acid and ester respectively