Protein
Probable deoxyribonuclease RhsB
Organism
Dickeya dadantii (strain 3937)
Function
Toxic component of a toxin-immunity protein module, which functions as a cellular contact-dependent growth inhibition (CDI) system. This protein may be a nuclease that is specifically inhibited by its cognate immunity protein RhsBI. Upon expression of the C-terminus (residues 1284-1436) in E.coli growth is inhibited, cells elongate, nucleoids condense and plasmid DNA is degraded; these effects are blocked specifically by cognate immunity protein RshIB. Cell contact is necessary for growth inhibition.
Similarity
Belongs to the RHS/WapA nuclease family.
Sequence
MLNDILSRVARVGAMHAGNRPNPPADRPQPCQGKPPTSPGKTIKHKSFLGALAGAVAGALVAAAVAAAAVFLVGVTGGLAVAAVGALAVFAAGDLISAVTNKVSAVVDSASPAFGPVASGSGNVFVEKQPVARATKDTVACTKHNSPQLIAQGSESVFVNDAPAARIDDKTVCGATLKEGASTVFFGSGQGTYLEIADEFSWWEKALLIAVEFLVPPSRGMLKGLGKLFTRNGLKSVLKGAKAGALFITKVPGKMGCAARAFKANKGMARFKEAAKAFKKDPVYLASGEVIESRTDIELGQTLPLVFERTYRSASAHTGLLGRGWHDSWSEVATVTHDGLNTHVVITLAQGYDIDFTFHQDVQAVYCPHYPEFTLHRRGDGFSLWHRDQQTWRDFSVVQGERRLLSAIHDSHDNRIELVRDPKGYLRQLRHSDGVTLLLVWQGEYLHQIQRIDGGQKTLLAEYRQDEQGRLVEANATHAYHLYYEYNTAHRLTRWHDNDQTWARYEYDAQGRCVYTTCADGFLTARFDYLPDRVVMTDGLGQRSEFGFNDLHLMSWEQSPLGHITRYEYDEVGNLLREISPAGRVVEFTYLDDTGRVSTFTDGSGHQWQYDYDDAQRLCGVTDPLGREWGWVYDAEGNPERLTGPDASEVRFTWNRYGLLTQVSDAAGEVQARLQYDHRQRLLSATDAESRTRQLRYDRQDRVVQWQRADGARFRLGYRRASWTLPEQLIRPDDKEEQRQYDRHNNLLSYVDGNGALWRQTFGPFDLLTARTDAEGRTWRYEYDRESQQLIAVTAPDGSRWQWWLDADGRVIRERDMTGTETHYGYDEDGLCIRVRNGEGDTRHFLYDARGLLLRETAPDDTLHYRYDAAGRLTEVSSATAHVQLDYDLRDRVVREWHNGTLLTRQYDDAARTVTRTLTWDGDADDTTGTLAPLTSLFHYTRTGELRQVQLPDGADLTLTHDAAGRESLRTGGSGFVQQREYDVMGWLTREQSGAQHDGRLQPAQTREYRYDGAGNLTGVRHNRDAEGYRLDATGRVQEMLSGGAGKPVDTTARFHYTRTGLPQEAGRLTEWQAGRLVQHDDTHYQYDRAGRLIRKQVVQPGYRPQVWQYRWDSRNQLRVVDTPNGERWLYRYDPFGRRVGKRCDQKAEETRYLWDGDQIAEIRHYRHGQLIQRRHWVYNGWELVVQQRQHTGGDWETDFVTSSQNGTPQALFTPDGTLRWQVPKATLWGQRQTEKSESPDPGLAFAGQLRDSESGLCYNRFRYYDPAGGCYVSPDPIGIAGGESNYGYVQNPNTRVDPLGLAGCAMGEILADADKWSLAKIGDRQKGMIKDKLSTVKERSKALNTKMREHFNANEQKIISEWEKQTGMNWPTLSSGSRATPHHVIPIKNGGSNEWWNIIPVQHPHTGTIHGTGSALRTHLPYQKDGGKLWNLLGY