Which of the amino acids in Table 27.1 have more than one stereogenic center? Table 27.1 TABLE

Which of the amino acids in Table 27.1 have more than one stereogenic center?
Table 27.1

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TABLE 27.1 α-Amino Acids Found in Proteins (Continued) Abbreviation Structural formula* Name Amino acids with polar but nonionized side chains NH3 Glutamine Gln (Q) NH3 Ser (S) HOCH2 -CHC02 . Serine OH NHa Thr (T) CH3 Threonine Amino acids with acidic side chains NH Aspartic acid Asp (D) NH3 Glu (E) OCCH2CH2 CHC02 Glutamic acid NH3 Tyr (Y) Tyrosine NH3 Cys (C) HSCH2 CHCO2 Cysteine Amino acids with basic side chains NH2 HNCH,CH,CH,CH CHCO, Lysine Lys (K) NH2 NH3 Arg (R) H2NCNHCH2CH2CH2 CHCO2 Arginine NH3 His (H) CH2 CHCo2 Histidine