>4JVU_1|Chains A, B|Ig mu chain C region membrane-bound form|Mus musculus (10090) MGIPAVAEMNPNVNVFVPPRDGFSGPAPRKSKLICEATNFTPKPITVSWLKDGKLVESGFTTDPVTIENKGSTPQTYKVISTLTISEIDWLNLNVYTCRVDHRGLTFLKNVSSTCAA