Table 1.

Assignment of Raman bands and amino acids in the SERS spectra shown in Fig. 3c

Au—phage, cm-1	Au—phage—imid, cm-1	Au—imid, cm-1	Imid, cm-1	Side chain or imid designation	Vibrational assignment*	Ref(s).
	670	650		Imid	γring (628 cm-1, Raman)	36 and 37
	750	764		Imid	γring (743 cm-1, SERS)	36
	840	838		Imid	γring (832 cm-1, SERS)	37
854				Tyr, Ile, and/or Met	γring (853 cm-1, Raman), γ(CC) (874 cm-1, Raman and SERS)	34 and 35
	954	954	931	Imid	γ(NH) + δring (950 cm-1, SERS)	36 and 37
1,030	1,030			Tyr, Phe, and/or Met	γ(CH) (1,033 cm-1, SERS), ν(CC, CN, CO) (1,031 cm-1, Raman)	33
	1,109	1,109		Imid	δ(CH) + νring (1,097 cm-1, SERS)	36 and 37
1,147				Met and Lys	ν(CC) (1,158 cm-1, Raman)	33
	1,169	1,169	1,160	Imid	δring (1,164 cm-1, SERS)	36 and 37
	1,268	1,268	1,263	Imid	δ(CH) (1,265 cm-1, SERS)	36 and 37
1,301				Amide III, Tyr, Ala, Lys, Ile, Val, Ser, Gly, Trp, and pVIII main chain	δ(CH) and ν(CC) (1,300 cm-1, Raman)	33-35
	1,328	1,328		Imid	νring (1,329 cm-1, SERS)	36 and 37
1,445	1,436	1,415	1,436	Trp and Imid	νring (1,449 cm-1, Raman)	36 and 37

^*δ, in-plane bending; γ, out-of-plane bending; ν, stretching.