>3mdxA (A:) observed residues (from ATOM records)
aptlgiirlehakgldlpayetagsagmdlraavaedrqivllpgrrtlvptglileipq
gyevqirprsglafkngitclntpgtidsdyrgevkvllinlgdddfriergmriaqavf
apviqpkieerakrgaggf