Immunogen sequence: MVKLGCSFSG KPGKDPGDQD GAAMDSVPLI SPLDISQLQP PLPDQVVIKT QTEYQLSSPD QQNFPDLEGQ RLNCSHPEEG RRLPTAR; Positive Samples: Mouse testis; Cellular Location: Cell membrane, Cytoplasmic vesicle membrane, Single-pass membrane protein. Calcyon is