基因名：
SPANXB1
产品别名：
B1； CT11.2； SPANX-B； SPANXB； SPANXB2； SPANXF1； SPANXF2； SPANXB1； SPANX family member B1； SPANX family member B1； sperm protein associated with the nucleus on the X chromosome B1； SPANX family member B/F； SPANX family member F1； SPANX family, member B2； SPANX family, member F2； cancer/testis antigen 11.2； cancer/testis antigen family 11, member 2； nuclear-associated protein SPAN-Xb； nuclear-associated protein SPAN-Xf； sperm protein associated with the nucleus on the X chromosome B/F； sperm protein associated with the nucleus, X chromosome, family member B1； 肿瘤/睾丸抗原11.2；
背景信息：
A variety of morphological and molecular changes are required for mature spermatozoa formation. These steps are temporally guided by the transcription and translation of several testis-specific genes. SPANX (sperm protein associated with the nucleus, X-linked) family members are sperm- and testis-specific proteins containing between 97-103 amino acids, whose genes form a cluster on chromosome X. Sharing a high level of sequence similarity, SPANX-A, -B, -C, -D and -E localize to both cytoplasm and nucleus where they are associated with nuclear craters. SPANX-B (Sperm protein associated with the nucleus on the X chromosome B/F) is a 103 amino acid protein that is detected in round and elongating spermatids.
