In an alpha helical protein that spans a cell membrane,the membrane whilewould likely be associated with the aqueous environmentO His; Ser; ThrCIle; Asn; GluTyr; Glu; GlyTrp: Asn; Ala(Ctrl)would likely be in the center ofwould likely be associated with the polar head groups and

The amino acids are classified as polar and non-polar. The integral membrane proteins are…

Answered: would likely be in the center of would…

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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A certain protein is used to activate myosin. If the protein is treated with B-mercaptoethanol, it will not activate myosin. What can you say about the structure of this protein? O The peptide is denatured by B-mercaptoethanol O The peptide does not have a thermodynamically stable configuration O The peptide contains more than one distinct chain O The peptide contains disulfide bonds required for activity
A scaffold protein can serve as a platform to accommodate a collection of enzymes involved in catalyzing multi-step reactions. Imagine a scaffold protein that anchors its soluble enzymes to be located near the cytoplasmic membrane. What interactions does the scaffold protein likely use to achieve this? Electrostatic interactions through a domain inserted into the membrane, and hydrophobic interactions with the enzymes. O Hydrophobic interactions through a domain inserted into the membrane, and hydrophobic interactions with the enzymes. O Electrostatic interactions through a domain inserted into the membrane, and electrostatic interactions with the enzymes. O Hydrophobic interactions through a domain inserted into the membrane, and electrostatic interactions with the enzymes.
addition and initial processing of N-linked oligosaccharides commences in the O ER: Golgi O cis Golgi: medial Golgi O medial Golgi; trans Golgi O cis Golgi: trans Golgi The and the oligosaccharide chains are further modified in the
Match each of the statements below with the fibrous protein that mostly fits the description. Coiled-coil of alpha helices V [ Choose] Collagen Silk fibroin Keratin Triple helical arrangement of polypeptide chains Extended anti-parallel beta sheets [ Choose ] Characterized by a predominant (GSGAGA)n repeat in the primary seguence [ Choose] Found in hair, feathers, scales, and nails [ Choose ] Is produced by insects and spiders [ Choose ] The sequence Gly-Pro-Hyp occurs frequently in this fibrous protein [ Choose ] Is characterized by the heptad pseudo- [ Choose ] repeat Major component of skin, tendons, ligaments and teeth [ Choose ] Characterized by regular inter-sheet spacing [ Choose ] of 0.35 and 0.57 nm
Which statement about N-linked glycosylation is correct? N-linked oligosaccharides are attached to proteins one sugar at the time in the endoplasmicreticulum. N-linked sugars are attached to proteins as a 14 residue oligosaccharide during translation in the endoplasmic reticulum. N-linked sugars are attached to proteins as a 14 residue oligosaccharide during translation inthe cytoplasm. N-linked sugars are attached to proteins as a 14 residue oligosaccharide after translation inthe Golgi apparatus.
Where is the KV1.1 (a membrane protein) polypeptide synthesized in the cell? (word bank: cytoplasm, nucleus, rough ER, smooth ER, mitochondria) The amino acids that line the outside of the KV1.1 protein (i.e., those in contact with the phospholipid bilayer's fatty acids tails) are more likely to be _______(word bank: hydrophobic, hydrophilic) The KV1.1 protein utilizes __ transport to move the K+ ions across the membrane. (word bank: active, passive) This disease can be caused by missense mutations. In general, how specifically would a missense mutation affect the KV1.1 protein?
When an amino acid's side chain, such as aspartic acid, has a pKa, that pKa is not the same if the amino acid occurs on the interior of a protein. Why would the pKa of a side chain of an Asp occuring on the inside of a protein be different from an Asp on the outside of a protein?
Which of the following mutations is most likely to cause the aggregation of a protein? the mutation of a surface glu to an asp the mutation of an interior val to an ile the mutation of a surface glu to a val the mutation of a surface thr to a glu the mutation of an interior thr to a ser
Classify each characteristic as describing glycoproteins or proteoglycans. Glycoproteins Proteoglycans Answer Bank form highly specific sites for recognition only has sulfated glycosaminoglycan chains found in Golgi complexes, secretory granules, and high-affinity binding by lectins covalently linked to Ser and lysosomes exclusively located at the cell surface may contain N-linked glycosidic bonds include the heparan sulfate family and in the extracellular matrix
Your research advisor would like you to measure the movement of a protein X using FRAP. The results of your FRAP experiment are shown below. What can you conclude? Fluorescence Intensity (Arbitrary Units) Time (Seconds) Time point of exposure to an intense laser Protein X appears to be completely immobilized in the membrane Protein X appears to be partially immobilized in the membrane You cannot make predictions about the mobility of Protein X with these data Protein X appears to be completely mobile in the membrane
Phosphotidyicholine is a structural lipid in the liver plasma membrane that is essential for the export of fatty acids and tríacylglycerol from liver. A diet low in choline will contribute to fatty liver disease due to inefficiant lipid export from liver. Which lipoprotein would likely be involved in the phophotidlycholine-depedent export of lipid from liver? O LDL O albumin O HDL O VLDL
Because of the difficulty in doing a flip-flop movement, the lipids need a protein translocator or a flippase. True False

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would likely be in the center of would likely be associated with the polar head groups and In an alpha helical protein that spans a cell membrane,. the membrane while would likely be associated with the aqueous environment His; Ser; Thr Ile; Asn; Glu Tyr; Glu; Glx. Trp: Asn; Ala (Ctrl) -