GSGSTEQSIQLTLGPWYSNDGKYSNPTIPVYTIQKTRSDTENMVVVVCGEGYTKSQQGKFINDVKRLWQDAMKYEPYRSYADRFNVYALCTASESTFDNGGSTFFDVIVDKYNSPVISNNLHGSQWKNHIFERCIGPEFIEKIHDAHIKKKCDPNTIPSGSEYEPYYYVHDYIAQFAMVVNTKSDFGGAYNNREYGFHYFISPSDSYRASKTFAHEFGHGLLGLGDEYSNGYLLDDKELKSLNLSSVEDPEKIKWRQLLGFRNTYTCRNAYGSKMLVSSYECIMRDTNYQFCEVCRLQGFKRMSQLVKDVDLYVATPEVKEYTGAYSKPSDFTDLETSSYYNYTYNRNDRLLSGNSKSRFNTNMNGKKIELRTVIQNISDKNARQLKFKMWIKHSDGSVATDSSGNPLQTVQTFDIPVWNDKANFWPLGALDHIKSDFNSGLKSCSLIYQIPSDAQLKSGDTVAFQVLDENGNVLADDNTETQRYTTVSIQYKFEDGSEIPNTAGGTFTVPYGTKLDLTPAKTLYDYEFIKVDGLNKPIVSDGTVVTYYYKNKNEEHTHNLTLVAAKAATCTTAGNSAYYTCDGCDKWFADATGSVEITDKTSVKIPAPGHTAGTEWKSDDTNHWHECTVAGCGVIIESTKSAHTAGEWIVDTPATATTAGTKHKECTVCHRVLETQPIPSTGTELKIIAGDNQIYNKASGSDVTITCNGDFAKFTGIKVDGSVVDSSNYTAVSGSTVLTLKASYLGTLTDGSHTITFVYTDGEANANLTVRTAGSGHIHDYGTEWKSNADNHWHECNCGDKKDEAAHSFKWVVDKEATATKKGSKHEECKICGYKRSAVEIPATGSHHHHHH
Immunoglobulin A protease middle (protease) domain with C-terminal tail (MD+CTD1-4). The protein construct used for SAS has four non-native amino acids at the N-terminus (GSGS) and a C-terminal polyhistidine tag (SHHHHHH).