>tr|Q572P4|Q572P4_HUMAN Tyrosine-protein kinase BTK isoform 51 (Fragment) OS=Homo sapiens OX=9606 GN=BTK PE=2 SV=1 IRHYVVCSTPQSQYYLAEKHLFSTIPELINYHQHNSAGLISRLKYPVSQQNKNAPSTAGL GYGAGDWTIWGSEVWEMERPVRRGHQDDQRRLHV