Question

2. Amino Acid analysis of a decapeptide revealed the presence of the following: Asn Glu Tyr Arg Met Pro Lys Ser Phe The following facts were observed: a. Trypsin treatment yielded two tetrapeptides and free lysine b. Clostripain treatment yielded a tetrapeptide and a hexapeptide c. Cyanogen bromide treatment yielded an octapeptide and a dipeptide of sequence NP. d. Chymotrypsin treatment yiedled two tripeptides and a tetrapeptide. The N- terminal chymotryptic peptide had a net charge of -1 at neutral pH an -3 at pH 12. e. The first cycle of protein sequencing gave the PTH derivative CH2OH NH \"\nI ser What is the amino acid sequence of this decapeptide?

          2. Amino Acid analysis of a decapeptide revealed the presence of the following:
Asn Glu Tyr Arg Met Pro Lys Ser Phe
The following facts were observed:
a. Trypsin treatment yielded two tetrapeptides and free lysine
b. Clostripain treatment yielded a tetrapeptide and a hexapeptide
c. Cyanogen bromide treatment yielded an octapeptide and a dipeptide of
sequence NP.
d. Chymotrypsin treatment yiedled two tripeptides and a tetrapeptide. The N-
terminal chymotryptic peptide had a net charge of -1 at neutral pH an -3 at
pH 12.
e. The first cycle of protein sequencing gave the PTH derivative
CH2OH
NH
\"\nI
ser
What is the amino acid sequence of this decapeptide?

2. Amino Acid analysis of a decapeptide revealed the presence of the following:
Asn Glu Tyr Arg Met Pro Lys Ser Phe
The following facts were observed:
a. Trypsin treatment yielded two tetrapeptides and free lysine
b. Clostripain treatment yielded a tetrapeptide and a hexapeptide
c. Cyanogen bromide treatment yielded an octapeptide and a dipeptide of
sequence NP.
d. Chymotrypsin treatment yiedled two tripeptides and a tetrapeptide. The N-
terminal chymotryptic peptide had a net charge of -1 at neutral pH an -3 at
pH 12.
e. The first cycle of protein sequencing gave the PTH derivative
CH2OH
NH
ser
What is the amino acid sequence of this decapeptide?

Added by Daniel S.

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