sperm acrosome membrane-associated protein 4; sperm acrosomal membrane-associated protein 14 (SPACA4, SAMP14, UNQ3046/PRO9862)

Function

• sperm surface membrane protein
• role in sperm-egg plasma membrane adhesion & fusion during fertilization

Compartment

• cell membrane, GPI-anchor
• acrosome, acrosomal matrix, outer & inner acrosomal membranes

Alternative splicing

named isoforms=1

Expression

testis specific, expressed in spermatozoa

More general terms

• testis-specific protein
• glypiated protein

Database

• UniProt: http://www.uniprot.org/uniprot/Q8TDM5.html