>sp|Q5MJ08|SPXN4_HUMAN Sperm protein associated with the nucleus on the X chromosome N4 OS=Homo sapiens GN=SPANXN4 MEEPTSSTNENKMKSPCESNKRKVDKKKKNLHRASAPEQSLKETEKAKYPTLVFYCRKNK KRNSNQLENNQPTESSTDPIKEKGDLDISAGSPQDGGQN