>sp|A4FU49-4|SH321_HUMAN Isoform 3 of SH3 domain-containing protein 21 OS=Homo sapiens OX=9606 GN=SH3D21 MIKEIEDGWWLGKRNGQLGAFPSNFVELLDSGPPSLGNPDMPSVSPGPQRPPKTTEDKGW WEGECQGRRGVFPDNFVLPPPPIKKLVPRKVVSRESAPIKEPKKLMPKTSLPTVKKLATA TTGPSKAKRKSTAAR