>2c4bB (B:) SEQRES residues qvintfdgvadylqtyhklpdnyitkseaqalgwvaskgnladvapgksiggdifsnreg klpgksgrtwreadinytsgfrnsdrilyssdwliykttdayqtftkirsssmgvcpkil kkcrrdsdclagcvcgpngfcgs