Protein: CDIA2_BURP2
Sequence: MNKNRYRVVFNRARGALMVVQENGRASHGSGSRDARAGVVPAWLSLSPFALRHVALAVLVAAGVVPIWVNAQVVAGGAHAPSVIQTQNGLQQVNINRPGASGVSMNTYNQFDVPKPGIILNNSPINVQTQLGGIIGGNPNFQAGDAARLIVNQVNSNNPSFIRGKVEIGGAAAQLVIANQAGLVVDGGGFLNTSRATLTTGNPNFGPDGSLTGFNVNQGLISVVGAGLDTANVDQVDLLARAVQINAKAYAKTLNVVAGSNQVDYNTLNATPIAANGPAPTIAIDVSQLGGMYANRVFLVSSENGVGVANAGDIAAQAGDLTLQANGRLVLSGHTNAAGNMSLSASGGIQNSGVTYGKQSVTITTGADLTNSGALTAQQNLTANVGSLNSTGTLGAGINVDSTVGTSGDLNVTSSGQLTATGTNSAAGNATFTGSGVNLSNSATAANGNLALTATAGDVNLAGSTVSAKGAVNAQASGTVVNDRGNLSSGAGMTLGGGSLSNQGGRANSQGPLSVQMAGTVSNQNGMLSSQSTADVRGSAIQNNAGLIQSAGKQTIAGASIDNSAGRLISLNADGLSVTATGALTNAAGANVSGDPGGVIGGKGDVTVQGNTVTNSGSMSADATLHVIGQSVDNGNGALHAGQTTTVDAGNHLSNAGGRVEGQSAVLNGATLDNSQGTVNAATVSLNGTTLLNHGGTVTQTGTGPMTVAITDTLDNSNNGLIQTRSTDLSLTSTTLINDNGGTITHVGPGTLTVGNGSGTVSNKAGAIASNGRTVLQGKTIDNSAGSASGQTGLSVNAADSITNLGGKLTSNANVDVTAGGALVNDGGELGSKTAATTIHSASLSNLNGKIVSPTLTATVAGLLDNSQNGDFEANQLALTAANLKNQGGHISQWQSGPTTLAVSGTLDNSNGGVIQTNSTDLTLAPAVLDNSKGTITHGGTGTLTLTPGNGAGALQNTGGTIGTNGQAIVKAGSLDNGSGVIAAKLGLSATIAGAMNNTQGLMRSNAALSIISNGALSNHQGHIEAGTPGDTSTLSIQAASIDNTDGAVHDFGTGKMTVQGGSQIVNSHAGGVDGMGQMTGQGDVTIGAASISNTQGGQLMGANLLIQGATLDNSGGQVGNVANATGDVNVAMSGAVTNTNGSITSTRDLSVAASTLLGGGAYSAARDAAINLQGDFTTTPQTQFNIGRDLTFTLPGTFANSANLQSVHNLTVNAGNIVNTGAMTAGSLLSTHSGDLTNYGAMVGGSVAIQASGTVSNLGPVALIGASDTSGLLEIVAHDIENRDDTTLGDSMPTTTIFGLGKVALAGGKDANGNYTNAALINNSSAAIQSGASMELHADKVTNTRRVMQTSGNTSQVDPALLQQLGISMSGCAAYYIAACSGQDVHWINLFHDPNYPDYDPAPIIAALKLQPGGVFTVPPNGGQWNSGYQYTTYEGKATANTVTKLSPGAQIASGGDLDASTVKTFQNYWSSVTAAGNIKQPASLDMDGWGATGQQAPGVTVVYSGYYHYNNYDNSEHNWTLPFGDKPFVGGPGGYTQAAPADVRQYSLPDYRSTWGANGTISGNGVSVNNTAANATIPSLGLLPGQAVPGLTIGTVSGNASGTQSGAAAIKGGTPTWVDPVIASATAVNVLSNLTIPQGGLYRPNSAPNPTYLIETNPAFTRMNNFLSSDYYLNQIGVNPLTTEKRLGDGFYEQQLVRNQVTQLTGKAVLGPYTDLQGMYQSLMLAGAEWSKSLNLPLGMSLSAQQVAALTTNVIIMQTETVGGQQVLVPVVYLAKADQQNANGPLITAGNIDLKNTQVFTNSGTVKADTTLALQGKQIDNAFGALQSGGLTSLDTTGNVDLTSANVKAGSLDLNAGNKLILDTATQTTHQVSRDGATSDKTTLGPAANLNVAGDASIKTGGDFQQNAGNLNVGGNLNANIGGNWNLGVQQTGEHKVVQRANGVSDTDLNSATGSTVNVGGKSAIGVGGDLTAQGARLDFGQGGTVAAKGNVTFGAASTTSTINANSSGDQGNRSYAETRHGSDQALTGTTVKGGDTLNVVSGKDINVIGSTIDLKKGDANLLAAGDVNVGAVTERHVYNSRETHSRSGVVSGTKIASSQDATSTVANGSLISADGVSIGSGKDINVQGSTVVGTHDVALNAAHDVNITTSQDTSQSSTTYQEQHSGLMSGGGLSFSVGNSKLAQQNQSSSVTNNASTVGSVDGNLTVNAGNTLHVKGSDLVAGKDVTGTAANIVVDSATDTTRQAQQQQTSKSGLTVGLSGSVGDAINNAISETQAARESAKDSNGRASALHSIAAAGDVAFGGLGAKALLDGAKGPQAPSIGVQVSVGSSHSSMQSSEDQTIQRGSSINAGGNAKLIATGNGTPKDGNITIAGSNVNAANVALIANNQVNLVNTTDTDKTQSSNSSSGSSVGVSIGTNGIGVSASMQRAHGDGNSDAAIQNNTHINASQTATIVSGGDTNVIGANVNANKVVADVGGNLNVASVQDTTVSAAHQSSAGGGFTISQTGGGASFSAQNGHADGNYAGVNEQAGIQAGSGGFDVTVKGNTDLKGAYIASTADASKNSLTTGTLTTSDIENHSHYSANSAGFSAGASVGVSTKAVGPSSVSGSGGVTPMVFQNDSGDQSATTKSAVSAGAINITKPGEQTQDVANLNRDATNLNGTVSKTPDVQKMLSQQADTMNAAQAAGQTVSQGIGLYADGKRKDAIDAAKAAYERGDLVAMQSYIDQAKSWDEGGASRAGLQATGGALIGGLGGGSVLTAIGGAAGAGTSSLLAGQAEKISKSVGDMTGSSLVGNIAANVAATVGGALVGGSAGAAMASNVELYNAGNDPQKTDDRATIAGLQGLLNQAVAAGAKGLSTIANARNAIGNAISGALDSAADQFGTLMKRDAEGKMSQSPAELVSQGVANGINTVLGSKGGEPPLAGPSAVAVDSLTGQAANAALGATDRTPPSNAILSNSNSDNNSTQGSQSGTVTKTPNPEATGSLSGKPTQIPPLSDEVTTRSLIRENQSAVTLANKGYDVVQNPEVLGPKNPDYTINGQVFDNYAPATGNVRNIATTISNKVSSGQASNIVVNLADSSASPAAIEAQINSYPIPGLGKVIVIDKLGNITIIKPKGN
What is the function of this protein?
The CdiA protein is thought to be exported from the cell through the central lumen of CdiB, the other half of its two-partner system (TPS).  The TPS domain probably remains associated with CdiB while the FHA-1 domain forms an extended filament with the receptor-binding domain (RBD) at its extremity; in the secretion arrested state the C-terminus of the RBD domain form a hairpin-like structure as the FHA-2, PT and CT domains are periplasmic.  Upon binding to a target cell outer membrane receptor (possibly a lipoprotein in this CDI) a signal is transmitted to activate secretion.  The filament elongates slightly, the rest of CdiA is secreted and the FHA-2 domain becomes stably associated with the target cell's outer membrane where it facilitates entry of the toxic CT domain into the target cell periplasm.  From there the toxic CT domain is cleaved and gains access to the target cell cytoplasm via an inner membrane protein (probably inner membrane protein BTH_II0599).
What are the official names of this protein?
tRNA nuclease CdiA-2, tRNase CdiA-2, CdiA-Bp1026b, Toxin CdiA-2, Toxin CdiA-II.
What is the protein family that this protein belongs to?
In the N-terminal section; belongs to the CdiA toxin family.
What are the subcellular locations of this protein?
Membrane; Single-pass membrane protein. Secreted. Target cell, target cell cytoplasm. Note=Secreted to the cell surface by CdiB, its two partner secretion pathway (TPS) partner (Probable). Probably translocated into the target cell cytoplasm as intracellular CdiI inhibits tRNase activity. Toxin translocation into the target cell depends on the proton motive force (pmf) of the target cell, but not on tolA or tonB. The pmf is probably required for translocation across the target cell inner membrane from its periplasm.