Organism
Helicobacter pylori (strain B128)
Function
An RNase that has 5'-3' exonuclease and possibly endoonuclease activity. Degrades 5'-monophosphorylated ssRNA and dsRNA, considerably more active on ssRNA. Association with RhpA significantly increases the dsRNase activity. Stimulates ATPase activity of RNA helicase RhpA. Involved in stabilization of mRNA but apparently not rRNA.
Similarity
Belongs to the metallo-beta-lactamase superfamily. RNA-metabolizing metallo-beta-lactamase-like family. Bacterial RNase J subfamily.
Sequence
MTDNNHYENNESNENSSENSKVDEARAGAFERFTNRKKRFRENAQKNGESSHHEAPSHHKKEHRPNKKPNNHHKQKHAKTRNYAKEELDSNKVEGVTEILHVNERGTLGFHKELKKGVETNNKIQVEHLNPHYKMNLNSKASVKITPLGGLGEIGGNMMVIETPKSAIVIDAGMSFPKEGLFGVDILIPDFSYLHQIKDKIAGIIITHAHEDHIGATPYLFKELQFPLYGTPLSLGLIGSKFDEHGLKKYRSYFKIVEKRCPISVGEFIIEWIHITHSIIDSSALAIQTKAGTIIHTGDFKIDHTPVDNLPTDLYRLAHYGEKGVMLLLSDSTNSHKSGTTPSESTIAPAFDTLFKEAQGRVIMSTFSSNIHRVYQAIQYGIKYNRKIAVIGRSMEKNLDIARELGYIHLPYQSFIEANEVAKYPDNEVLIVTTGSQGETMSALYRMATDEHRHISIKPNDLVIISAKAIPGNEASVSAVLNFLIKKEAKVAYQEFDNIHVSGHAAQEEQKLMLRLIKPKFFLPVHGEYNHVARHKQTAISCGVPEKNIYLMEDGDQVEVGPAFIKKVGTIKSGKSYVDNQSNLSIDTSIVQQREEVASAGVFAATIFVNKNKQALLESSQFSSLGLVGFKDEKHLIKEIQGGLEMLLKSSNAEILNNPKKLEDHTRNFIRKALFKKFRKYPAIICHAHSF