Terminology Service < Semantic Lookup Platform

All terms in GO

Label	Id	Description
sieve area	GO_0097217	[A pit-like area in the cell wall of a sieve element; contains pores lined with callose and occupied by strands of protoplasmic material that interconnect the protoplasts of contiguous sieve elements.]
sieve plate	GO_0097218	[A part of the cell wall of a sieve tube member that bears one or more highly specialized sieve areas.]
compound sieve plate	GO_0097219	[A sieve plate that contains several specialized sieve areas in either a scalariform or reticulate arrangement.]
simple sieve plate	GO_0097220	[A sieve plate that contains a single specialized sieve area.]
M/G1 phase-specific MADS box-forkhead transcription factor complex	GO_0097221	[A protein complex that contains a MADS-box protein and two forkhead domain proteins, and binds to and regulates transcription from promoters of genes transcribed during the M/G1 transition of the cell cycle. In Schizosaccharomyces pombe, the complex contains the MADS-box protein Mbx1 and two forkhead proteins, Sep1 and Fkh2.]
mitochondrial mRNA polyadenylation	GO_0097222	[The enzymatic addition of a sequence of 40-60 adenylyl residues at the 3' end of a eukaryotic mitochondrial mRNA primary transcript. Mitochondria contain both stabilizing and destabilizing poly(A) tails.]
mitochondrial mRNA 3'-end processing	GO_0090616	[Any process involved in forming the mature 3' end of an mRNA molecule that derives from the mitochondrial genome.]
mRNA polyadenylation	GO_0006378	[The enzymatic addition of a sequence of 40-200 adenylyl residues at the 3' end of a eukaryotic mRNA primary transcript.]
obsolete sperm part	GO_0097223	[OBSOLETE. Any constituent part of a sperm, a mature male germ cell that develops from a spermatid.]
sperm connecting piece	GO_0097224	[The segment of the sperm flagellum that attaches to the implantation fossa of the nucleus in the sperm head; from the remnant of the centriole at this point, the axoneme extends throughout the length of the flagellum.]
sperm flagellum	GO_0036126	[A microtubule-based flagellum (or cilium) that is part of a sperm, a mature male germ cell that develops from a spermatid.]
sperm midpiece	GO_0097225	[The highly organized segment of the sperm flagellum which begins at the connecting piece and is characterized by the presence of 9 outer dense fibers (ODFs) that lie outside each of the 9 outer axonemal microtubule doublets and by a sheath of mitochondria that encloses the ODFs and the axoneme; the midpiece terminates about one-fourth of the way down the sperm flagellum at the annulus, which marks the beginning of the principal piece.]
sperm mitochondrial sheath	GO_0097226	[The tightly packed helical sheath of ATP-producing mitochondria restricted to the midpiece of the sperm flagellum.]
sperm annulus	GO_0097227	[The ring-like, filamentous structure located at the distal end of the midpiece of the sperm flagellum; the annulus is thought to form a diffusion barrier between the midpiece and the principal piece and serve as a stabilizing structure for tail rigidity.]
sperm principal piece	GO_0097228	[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.]
sperm end piece	GO_0097229	[The short tip of the sperm flagellum, adjacent to the sperm principal piece and furthest from the sperm head, which contains only the axoneme surrounded by the plasma membrane.]
cell motility in response to potassium ion	GO_0097230	[Any process involved in the controlled self-propelled movement of a cell that results in translocation of the cell from one place to another as a result of a potassium ion stimulus.]
cellular response to potassium ion	GO_0035865	[Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a potassium ion stimulus.]
cell motility in response to calcium ion	GO_0097231	[Any process involved in the controlled self-propelled movement of a cell that results in translocation of the cell from one place to another as a result of a calcium ion stimulus.]
lamellar body membrane	GO_0097232	[The lipid bilayer surrounding a lamellar body. A lamellar body is a membrane-bounded organelle, specialized for the storage and secretion of various substances (surfactant phospholipids, glycoproteins and acid phosphates) which are arranged in the form of tightly packed, concentric, membrane sheets or lamellae. Has some similar properties to, but is distinct from, a lysosome.]