'''Spermno-pridruženi antigen 8''' je [[protein]] koji je kod [[ljudi]] [[kodon|kodiran]] [[gen]]om
'''SPAG8'''.<ref name="pmid10500252">{{cite journal | vauthors = Wang H, Miao S, Chen D, Wang L, Koide SS | title = Assignment of chromosomal locus and evidence for alternatively spliced mRNAs of a human sperm membrane protein (hSMP-1) | journal = Biochim Biophys Acta | volume = 1447 | issue = 1 | pages = 119–24 |date=Nov 1999 | pmid = 10500252 | doi =  10.1016/s0167-4781(99)00136-0}}</ref><ref name="pmid8788182">{{cite journal | vauthors = Liu QY, Wang LF, Miao SY, Catterall JF | title = Expression and characterization of a novel human sperm membrane protein | journal = Biol Reprod | volume = 54 | issue = 2 | pages = 323–30 |date=Oct 1996 | pmid = 8788182 | doi =10.1095/biolreprod54.2.323  | doi-access = free }}</ref><ref name="entrez">{{cite web | title = Entrez Gene: SPAG8 sperm associated antigen 8| url = https://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=26206}}</ref>
==Aminokiselinska sekvenca==
Dužina [[polipeptid]]nog lanca je  426 [[aminokiselina]], а [[molekularna masa|molekulska težina]]  44.819 [[dalton (jedinica)|Da]].<ref name="UniProt">{{cite web|url=http://www.uniprot.org/uniprot/Q99932#sequences |title=UniProt, Q99932 |access-date=11. 9. 2021}}</ref>
<table  style="font-family:monospace;">
<tr style="text-align:right;"><th>10</th><th></th><th>20</th><th></th><th>30</th><th></th><th>40</th><th></th><th>50</th></tr>
<tr style="background-color: #eee;"><td>METNESTEGS</td><td style="background-color: #f9f9f9;"></td><td>RSRSRSLDIQ</td><td style="background-color: #f9f9f9;"></td><td>PSSEGLGPTS</td><td style="background-color: #f9f9f9;"></td><td>EPFPSSDDSP</td><td style="background-color: #f9f9f9;"></td><td>RSALAAATAA</td></tr>
<tr style="background-color: #eee;"><td>AAAAASAAAA</td><td style="background-color: #f9f9f9;"></td><td>TAAFTTAKAA</td><td style="background-color: #f9f9f9;"></td><td>ALSTKTPAPC</td><td style="background-color: #f9f9f9;"></td><td>SEFMEPSSDP</td><td style="background-color: #f9f9f9;"></td><td>SLLGEPCAGP</td></tr>
<tr style="background-color: #eee;"><td>GFTHNIAHGS</td><td style="background-color: #f9f9f9;"></td><td>LGFEPVYVSC</td><td style="background-color: #f9f9f9;"></td><td>IAQDTCTTTD</td><td style="background-color: #f9f9f9;"></td><td>HSSNPGPVPG</td><td style="background-color: #f9f9f9;"></td><td>SSSGPVLGSS</td></tr>
<tr style="background-color: #eee;"><td>SGAGHGSGSG</td><td style="background-color: #f9f9f9;"></td><td>SGPGCGSVPG</td><td style="background-color: #f9f9f9;"></td><td>SGSGPGPGSG</td><td style="background-color: #f9f9f9;"></td><td>PGSGPGHGSG</td><td style="background-color: #f9f9f9;"></td><td>SHPGPASGPG</td></tr>
<tr style="background-color: #eee;"><td>PDTGPDSELS</td><td style="background-color: #f9f9f9;"></td><td>PCIPPGFRNL</td><td style="background-color: #f9f9f9;"></td><td>VADRVPNYTS</td><td style="background-color: #f9f9f9;"></td><td>WSQHCPWEPQ</td><td style="background-color: #f9f9f9;"></td><td>KQPPWEFLQV</td></tr>
<tr style="background-color: #eee;"><td>LEPGARGLWK</td><td style="background-color: #f9f9f9;"></td><td>PPDIKGKLMV</td><td style="background-color: #f9f9f9;"></td><td>CYETLPRGQC</td><td style="background-color: #f9f9f9;"></td><td>LLYNWEEERA</td><td style="background-color: #f9f9f9;"></td><td>TNHLDQVPSM</td></tr>
<tr style="background-color: #eee;"><td>QDGSESFFFR</td><td style="background-color: #f9f9f9;"></td><td>HGHRGLLTMQ</td><td style="background-color: #f9f9f9;"></td><td>LKSPMPSSTT</td><td style="background-color: #f9f9f9;"></td><td>QKDSYQPPGN</td><td style="background-color: #f9f9f9;"></td><td>VYWPLRGKRE</td></tr>
<tr style="background-color: #eee;"><td>AMLEMLLQHQ</td><td style="background-color: #f9f9f9;"></td><td>ICKEVQAEQE</td><td style="background-color: #f9f9f9;"></td><td>PTRKLFEVES</td><td style="background-color: #f9f9f9;"></td><td>VTHHDYRMEL</td><td style="background-color: #f9f9f9;"></td><td>AQAGTPAPTK</td></tr>
<tr style="background-color: #eee;"><td>PHDYRQEQPE</td><td style="background-color: #f9f9f9;"></td><td>TFWIQRAPQL</td><td style="background-color: #f9f9f9;"></td><td>PVCEGD</td></tr>
</table>
{{legenda aminokiselina}}