Protein
Aspartate--tRNA(Asp/Asn) ligase
Organism
Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)
Function
Aspartyl-tRNA synthetase with relaxed tRNA specificity since it is able to aspartylate not only its cognate tRNA(Asp) but also tRNA(Asn). Is 1.5 times more efficient at aminoacylating E.coli tRNA(Asp) over tRNA(Asn). Reaction proceeds in two steps: L-aspartate is first activated by ATP to form Asp-AMP and then transferred to the acceptor end of tRNA(Asp/Asn).
Similarity
Belongs to the class-II aminoacyl-tRNA synthetase family. Type 1 subfamily.
Sequence
MMRSHYCGQLNESLDGQEVTLCGWVHRRRDHGGVIFLDVRDREGLAQVVFDPDRAETFAKADRVRSEFVVKITGKVRLRPEGARNPNMASGSIEVLGYELEVLNQAETPPFPLDEYSDVGEETRLRYRFIDLRRPEMAAKLKLRARITSSIRRYLDDNGFLDVETPILGRPTPEGARDYLVPSRTYPGHFFALPQSPQLFKQLLMVAGFDRYYQIAKCFRDEDLRADRQPEFTQIDIETSFLDESDIIGITEKMVRQLFKEVLDVEFDEFPHMPFEEAMRRYGSDKPDLRIPLELVDVADQLKEVEFKVFSGPANDPKGRVAALRVPGAASMPRSQIDDYTKFVGIYGAKGLAYIKVNERAKGVEGLQSPIVKFIPEANLNVILDRVGAVDGDIVFFGADKAKIVCDALGALRIKVGHDLKLLTREWAPMWVVDFPMFEENDDGSLSALHHPFTSPKCTPAELEANPGAALSRAYDMVLNGTELGGGSIRIHDKSMQQAVFRVLGIDEAEQEEKFGFLLDALKYGAPPHGGLAFGLDRLVMLMTGASSIREVIAFPKTQSAGDVMTQAPGSVDGKALRELHIRLREQPKAE