>3sr4A (A:) SEQRES residues
mgeklelrlkspvgaepavypwplpvydkhhdaaheiietirwvceeipdlklamenyvl
idydtksfesmqrlcdkynraidsihqlwkgttqpmklntrpstgllrhilqqvynhsvt
dpeklnnyepfspevygetsfdlvaqmideikmtdddlfvdlgsgvgqvvlqvaaatnck
hhygvekadipakyaetmdrefrkwmkwygkkhaeytlergdflseewreriantsvifv
nnfafgpevdhqlkerfanmkeggrivsskpfaplnfrinsrnlsdigtimrvvelsplk
gsvswtgkpvsyylhtidrtilenyfsslknpklreeqeaarrrqqresks