>sp|Q3B7S5|SMI21_HUMAN Small integral membrane protein 21 OS=Homo sapiens OX=9606 GN=SMIM21 PE=1 SV=1 MDQYVSTAPPRFPIAQLGTFKQDSAGMGRIFKGNLLQKKALTTFENEHHIRFFTLLVLFH VMVLLRNHSRIQGVSEDWKRANSIFRNFLRLKSSRNTAEAE