| GO term | GO name | GO namespace | GO def |
| GO:0005227 | calcium activated cation channel activity | molecular_function | Enables the calcium concentration-regulatable energy-independent passage of cations across a lipid bilayer down a concentration gradient. [GOC:dph, GOC:mtg_transport] |
| GO:0005245 | voltage-gated calcium channel activity | molecular_function | Enables the transmembrane transfer of a calcium ion by a voltage-gated channel. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded. [GOC:mtg_transport, GOC:tb, ISBN:0815340729] |
| GO:0001669 | acrosomal vesicle | cellular_component | A structure in the head of a spermatozoon that contains acid hydrolases, and is concerned with the breakdown of the outer membrane of the ovum during fertilization. It lies just beneath the plasma membrane and is derived from the lysosome. [ISBN:0124325653, ISBN:0198506732] |
| GO:0006814 | sodium ion transport | biological_process | The directed movement of sodium ions (Na+) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. [GOC:ai] |
| GO:0005515 | protein binding | molecular_function | Binding to a protein. [GOC:go_curators] |
| GO:0030317 | flagellated sperm motility | biological_process | The directed, self-propelled movement of a cilium (aka flagellum) that contributes to the movement of a flagellated sperm. [GO_REF:0000060, GOC:cilia, GOC:krc, GOC:TermGenie, PMID:26680031] |
| GO:0005886 | plasma membrane | cellular_component | The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins. [ISBN:0716731363] |
| GO:0034765 | regulation of ion transmembrane transport | biological_process | Any process that modulates the frequency, rate or extent of the directed movement of ions from one side of a membrane to the other. [GOC:mah] |
| GO:0048240 | sperm capacitation | biological_process | A process required for sperm to reach fertilization competence. Sperm undergo an incompletely understood series of morphological and molecular maturational processes, termed capacitation, involving, among other processes, protein tyrosine phosphorylation and increased intracellular calcium. [GOC:jid, ISBN:978-3-642-58301-8, PMID:11820818] |
| GO:0036128 | CatSper complex | cellular_component | A sperm-specific voltage-gated calcium channel that controls the intracellular calcium ion concentration and, thereby, the swimming behavior of sperm. Consists of a heteromeric tetramer surrounding a calcium ion- selective pore. May also contain additional auxiliary subunits. [GOC:sp, PMID:17478420, PMID:21224844, PMID:22354039] |
| GO:0097228 | sperm principal piece | cellular_component | The segment of the sperm flagellum where the mitochondrial sheath ends, and the outer dense fibers (ODFs) associated with outer axonemal doublets 3 and 8 are replaced by the 2 longitudinal columns of the fibrous sheath (FS) which run the length of the principal piece and are stabilized by circumferential ribs. The principal piece makes up ~2/3 of the length of the sperm flagellum and is defined by the presence of the FS and of only 7 (rather than 9) ODFs which taper and then terminate near the distal end of the principal piece. [GOC:cjm, MP:0009836] |
| GO:0070588 | calcium ion transmembrane transport | biological_process | A process in which a calcium ion is transported from one side of a membrane to the other by means of some agent such as a transporter or pore. [GOC:mah] |