. Author manuscript; available in PMC: 2013 Mar 12.

Published in final edited form as: Biomacromolecules. 2012 Feb 3;13(3):683–690. doi: 10.1021/bm201555c

Table 3.

Molecular weight of various silk fibroin and ramified Si-peptide fragments obtained from trypsin proteolysis of Si-peptide-silk chimera with peptide ions sequenced by MS/MS.


			Ramified fragment

	Silk fibroin fragment	Si-peptide fragment	Theoretical MW (g.mol⁻¹)	Experimental MW (g.mol⁻¹)
Light chain	YIAQAASQVHV	K	1444.795	1444.737
	AWDYVDDTDKSIAILNVQEILK	K	2807.458	2807.276
	RLYNSR	RK	1092.27	1091.466

Heavy chain	GYGQGAGSAASSVSSASSR	KSLSRHDHIHHH	3324.529	3323.638
	DASGAVIEEQITTK	R	1617.67	1618.7
	EGYEYAWSSK	R	1375.46	1375.674