>1vs6F (F:) observed residues (from ATOM records)
aklhdyykdevvkklmtefnynsvmqvprvekitlnmgvgeaiadkklldnaaadlaais
gqkplitkarksvagfkirqgypigckvtlrgermwefferlitiavprirdfrglsaks
fdgrgnysmgvreqiifpeidydkvdrvrgldititttaksdeegrallaafdfpfrk