Which a amino acid can cross link peptide chains [AIIMS 2001]

1.	Which a amino acid can cross link peptide chains [AIIMS 2001]
A.	Serine
B.	Cysteine
C.	Glutamine
D.	Tyrosine
Answer» C. Glutamine

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Which a amino acid can cross link peptide chains [AIIMS 2001]

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