>9ubw_d mol:protein length:250 Cation channel sperm-associated protein 4DVMEKKDAWDVQEFITQMYIKQLLRHPAFQLLLAFLLLSNAITIALRTNSYLGQKHYELFSTIDDIVLTILICEVLLGWLNGFWIFWKDGWNILNFAIVFILFMGFFIKQLDMVAITYPLRVLRLVHVCMAVEPLARIIKVILQSMPDLANVMALILFFMLVFSVFGVTLFGAFVPKHFQNMGVALYTLFICITQDGWLDIYTDFQMDEREYAMEVGGAIYFAVFITLGAFIGLNLFVVVVTTNLEQMMK