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1.A.54.4.1
The pre-flagelin peptidase of 230 aas and 6 TMSs, FlaK, with known 3-d structure (3.6Å resolution) (Hu et al. 2011).  This protein is a member of the presenilin/GxGD membrane protein family; it plays a dual role as protease and ion-conducting channel and is therefore called a "channzyme" (Kuo et al. 2015).

Accession Number:Q6LZR9
Protein Name:Preflagellin peptidase
Length:230
Molecular Weight:25915.00
Species:Methanococcus maripaludis (strain S2 / LL) [267377]
Number of TMSs:5
Location1 / Topology2 / Orientation3: Cell membrane1 / Multi-pass membrane protein2
Substrate ion

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FASTA formatted sequence
1:	MIEYIIGVIG LLLASVQDFR SREIEDYIWI VLAVFGILFA IYSAITLSNY SILINSISGF 
61:	VICFILGYMM FLSGIGGGDG KILIGLGALV PKFQMPIYTS LGTLLNLNYI PNFPIMVFIN 
121:	GIFFMVFLPF VILFRNILNG ARPKTGKEVI LMFFGEKMKV KVAKEQKRLI MGQNDKINFF 
181:	PASDDEDFSK YGDEEEIWVT PQIPLIIPIT LSYLVTPIIG DRILDLLIPF