RPP21 GI:13376253 ribonuclease P 21 1 magpvkdrea fqrlnflyqa ahcvlaqdpe nqalarfycy tertiakrlv 50 51 lrrdpsvkrt lcrgcssllv pgltctqrqr rcrgqrwtvq tcltcqrsqr 100 101 flndpghllw gdrpeaqlgs qadskplqpl pntahsisdr lpeekmqtqg 150 151 ssnq