Failure of anti-oxidant function results in the hydroxylation of an aromatic acid of Enzyme Z and its activation, so that it degrades protoporphyrin to porphyrin, an unstable product. When hit by light, this product further degrades to form a compound responsible for the lesions and excruciating pain the man suffers. The mutation also affected an amino acid at the N-terminal of Enzyme X. Sequencing of the first seven (7) amino acids at the N-terminal of the normal enzyme gave the following sequence: trp-arg-asp-leu-ser-gly-his When the CDNA was sequenced by the Sanger method utilizing ddCTP, the following products were obtained: Tetranucleotide, Hexanucleotide, Nonanucleotide, Decanucleotide, Dodenucleotide, Octadecanucleotide, Nonadecanucleotide, 21-nucleotide What is the sequence of the bases in the MRNA coding for the peptide above? The mutation involved the 19 bases of the template strand of the peptide. A comparison of the electrophoretic profile of the normal peptided (N) and and mutant peptide (M) is shown below. The (+) electrode is situated at the bottom. What amino acid was altered in the normal peptide and what amino acid replaced it o the mutant peptide? рH 5.0 pH 7.0 pH 9.5 pH 10.5 N M N M N M N M

Biochemistry
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ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
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Chapter1: Biochemistry: An Evolving Science
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Failure of anti-oxidant function results in the hydroxylation of an aromatic acid of Enzyme Z and its activation, so
that it degrades protoporphyrin to porphyrin, an unstable product. When hit by light, this product further degrades
to form a compound responsible for the lesions and excruciating pain the man suffers. The mutation also affected
an amino acid at the N-terminal of Enzyme X. Sequencing of the first seven (7) amino acids at the N-terminal of
the normal enzyme gave the following sequence: trp-arg-asp-leu-ser-gly-his
When the CDNA was sequenced by the Sanger method utilizing ddCTP, the following products were obtained:
Tetranucleotide, Hexanucleotide, Nonanucleotide, Decanucleotide, Dodenucleotide, Octadecanucleotide,
Nonadecanucleotide, 21-nucleotide
What is the sequence of the bases in the mRNA coding for the peptide above?
The mutation involved the 19 bases of the template strand of the peptide. A comparison of the electrophoretic
profile of the normal peptided (N) and and mutant peptide (M) is shown below. The (+) electrode is situated at
the bottom. What amino acid was altered in the normal peptide and what amino acid replaced it o the
mutant peptide?
pH 5.0
рH 7.0
pH 9.5
pH 10.5
N M
N M
N M
N M
Transcribed Image Text:Failure of anti-oxidant function results in the hydroxylation of an aromatic acid of Enzyme Z and its activation, so that it degrades protoporphyrin to porphyrin, an unstable product. When hit by light, this product further degrades to form a compound responsible for the lesions and excruciating pain the man suffers. The mutation also affected an amino acid at the N-terminal of Enzyme X. Sequencing of the first seven (7) amino acids at the N-terminal of the normal enzyme gave the following sequence: trp-arg-asp-leu-ser-gly-his When the CDNA was sequenced by the Sanger method utilizing ddCTP, the following products were obtained: Tetranucleotide, Hexanucleotide, Nonanucleotide, Decanucleotide, Dodenucleotide, Octadecanucleotide, Nonadecanucleotide, 21-nucleotide What is the sequence of the bases in the mRNA coding for the peptide above? The mutation involved the 19 bases of the template strand of the peptide. A comparison of the electrophoretic profile of the normal peptided (N) and and mutant peptide (M) is shown below. The (+) electrode is situated at the bottom. What amino acid was altered in the normal peptide and what amino acid replaced it o the mutant peptide? pH 5.0 рH 7.0 pH 9.5 pH 10.5 N M N M N M N M
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