CTSC GI:22538440 cathepsin C isoform b precursor 1 mgagpsllla alllllsgdg avrcdtpanc tyldllgtwv fqvgssgsqr 50 51 dvncsvmgpq ekkvvvylqk ldtayddlgn sghftiiynq gfeivlndyk 100 101 wfaffkdvtd fishlfmqlg tvgiydlphl rnklvik