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Fig. 1. (A) The predicted amino acid sequence of AprA. The amino acid sequences
from tryptic peptides of AprA are shown by grey boxes. The SignalP program
predicted that amino acids 1-18 are a signal sequence, with a maximum cleavage
site probability (0.933) between amino acids 18 and 19. Asterisks indicate
potential N-and O-linked glycosylation sites. A double underline indicates a
potential ATP-GTP binding site. The broken underline indicates the region with
some similarity to human proteins. (B) The partial sequence of AprA (top line)
compared with a short region of similarity in three different human ESTs.