>3mr7C (C:) observed residues (from ATOM records)
aerrlcailaadmagysrlmetdvlnrqklyrrelidpaiaqaggqivkttgdgmlarfd
taqaalrcaleiqqamqqreedtprkeriqyriginigdivledgdifgdavnvaarlea
isepgaicvsdivhqitqdrvsepftdlglqkvknitrpirvwqwvpda