>gi|21361891 SH2 domain containing 4A [Homo sapiens]
MLKQILSEMYIDPDLLAELSEEQKQILFFKMREEQIRRWKEREAAMERKE
SLPVKPRPKKENGKSVHWKLGADKEVWVWVMGEHHLDKPYDVLCNEIIAE
RARLKAEQEAEEPRKTHSEEFTNSLKTKSQYHDLQAPDNQQTKDIWKKVA
EKEELEQGSRPAPTLEEEKIRSLSSSSRNIQQMLADSINRMKAYAFHQKK
ESMKKKQDEEINQIEEERTKQICKSWKEDSEWQASLRKSKAADEKRRSLA
KQAREDYKRLSLGAQKGRGGERLQSPLRVPQKPERPPLPPKPQFLNSGAY
PQKPLRNQGVVRTLSSSAQEDIIRWFKEEQLPLRAGYQKTSDTIAPWFHG
ILTLKKANELLLSTGMPGSFLIRVSERIKGYALSYLSEDGCKHFLIDASA
DAYSFLGVDQLQHATLADLVEYHKEEPITSLGKELLLYPCGQQDQLPDYL
ELFE