Tag: Reproduction
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ADAM7: The Fashionably Late Protein of Sperm Maturation
ADAM7 is the protein equivalent of that friend who always shows up to the party at the last minute, but somehow still manages to steal the show! ADAM7 is the cool cucumber of the reproductive world. While other proteins are busy working overtime during sperm production, ADAM7 is kicking back, waiting for its moment to…
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ADAM17: The Drama Queen of the Cellular World
ADAM17 is the protein that’s not content with just one stage name! Also known as TACE (TNF-α Converting Enzyme), this molecular diva is the ultimate multi-tasker of the cellular world. Picture ADAM17 as the gossip columnist of the cell, always ready to spread the latest news. But instead of whispers and rumors, it’s spreading cellular…
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ADAM10: The Cellular Scissorhands of Reproduction
Prepare to be amazed by ADAM10, the Edward Scissorhands of the cellular world! This protein isn’t just content with the usual reproductive shenanigans; it’s got its fingers in pies all over the body. Picture ADAM10 as a molecular barber, constantly snipping and trimming proteins on cell surfaces. But unlike your average hairdresser, ADAM10 doesn’t just…
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ADAM1: The Wingman of the Fertilization World
Picture this: ADAM1 and ADAM2, arm in arm, strutting down the sperm surface like they own the place. They’re the power couple of the reproductive world, working together to make sure that when sperm meets egg, it’s love at first sight. ADAM1, also known as fertilin alpha, is the other half of the dynamic duo…
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ADAM3: The Sperm’s GPS to Egg-cellence
Picture this: millions of sperm, all revved up with nowhere to go, until ADAM3 steps in. This protein is the VIP pass that gets sperm through the velvet rope of the zona pellucida – that fancy term for the egg’s outer layer. Without ADAM3, sperm are like partygoers without an invitation, left out in the…
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Egg Case (mermaid’s Purse)
An egg case or egg capsule, often colloquially called a mermaid’s purse, is the casing that surrounds the eggs of oviparous chondrichthyans. Living chondricthyans that produce egg cases include some sharks, skates and chimaeras. Egg cases typically contain one embryo, except for big skate and mottled skate egg cases, which contain up to 7 embryos.[1] Oviparity is completely absent in the superorder Squalomorphii.[2][3] Egg cases are also thought to have been produced by some extinct…
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ASCUS (Formerly Theca)
This article is about the spore-bearing cell in fungi. For Atypical Squamous Cells of Undetermined Significance (ASCUS), see Bethesda system. For the Greek mythological giant, see Ascus (mythology). (pl. asci) a cell present in the fruiting body of ASCOMYCETE fungi in which the fusion of HAPLOID nuclei occurs during sexual reproduction. This is normally followed by MEIOSIS, giving rise to four haploid cells, after which MITOSIS produces eight ASCOSPORES. The precise arrangement of ascospores within the ascus enables the events at meiosis to be fully analysed (see TETRAD ANALYSIS). The asci are usually enclosed within an aggregation of hyphae termed an ASCOCARP, a number of different types being recognized, e.g. perithecium, cleistothecium, apothecium. (Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005) An ascus (from Ancient Greek ἀσκός (askós) ‘skin bag, wineskin’; pl.: asci)[1] is the sexual spore-bearing cell produced in ascomycete fungi. Each ascus usually contains eight ascospores (or octad), produced by meiosis followed, in most species, by a mitotic cell division. However, asci in some genera…
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Xylotheque
A xylotheque or xylothek (from the Greek xylon for “wood” and theque meaning “repository”) is special form of herbarium that consists of a collection of authenticated wood specimens.[1] It is also known as a xylarium (from the Greek xylon for “wood” and Latin arium meaning “separate place”). Traditionally, xylotheque specimens were in the form of book-shaped volumes, each made of a particular kind of wood and holding samples of the different parts…
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Thermolysin – The Tiny Terminator of Plasma Proteins!
Both thermolysin and snake venom metalloproteinases (SVMPs) share a similar mechanism of action, utilizing zinc ions to hydrolyze peptide bonds in proteins
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the ULTIMATE BUGGY BASS DROP
Oh snap, buckle up buttercup, ’cause we’re about to dive deep into the wildest rave this side of the exoskeleton! 🐛🎉 Imagine, if you will, a microscopic mosh pit where insects are gettin’ jiggy with it on a molecular level. It’s not your average hormone hoedown, oh no – this is the ULTIMATE BUGGY BASS…
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DMRT1
Doublesex and mab-3 related transcription factor 1, also known as DMRT1, is a protein which in humans is encoded by the DMRT1 gene. Function DMRT1 is a dose sensitive transcription factor protein that regulates Sertoli cells and germ cells. The DMRT1 gene is located at the end of the 9th chromosome. This gene is found in a cluster with two other members…
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Steroidogenic factor 1 (SF-1) protein and a few related things
The steroidogenic factor 1 (SF-1) protein is a transcription factor involved in sex determination by controlling the activity of genes related to the reproductive glands or gonads and adrenal glands. This protein is encoded by the NR5A1 gene, a member of the nuclear receptor subfamily, located on the long arm of chromosome 9 at position 33.3. It was originally identified as a regulator of genes encoding cytochrome P450 steroid hydroxylases, however, further roles…
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The transforming growth factor beta receptors
a family of serine/threonine kinase receptors involved in TGF beta signaling pathway
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Echinoderm reproduction and pluteus larva
An echinoderm is any member of the phylum Echinodermata. The adults are recognisable by their (usually five-point) radial symmetry, and include starfish, brittle stars, sea urchins, sand dollars, and sea cucumbers, as well as the sea lilies or “stone lilies”. Adult echinoderms are found on the sea bed at every ocean depth, from the intertidal zone to the abyssal zone. The phylum contains about 7,000 living species, making it the second-largest…
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herm. and Herm.
herm. is a botanical/zoological abbreviation for hermaphrodite, a sexually reproducing organism that produces both male and female gametes. Herm. following the name of a Christian saint denotes that the saint was a hermit
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Jet
Jet is a type of lignite, the lowest rank of coal, and is a gemstone. Unlike many gemstones, jet is not a mineral, but is rather a mineraloid. It is derived from wood that has changed under extreme pressure. The English noun jet derives from the French word for the same material, jaiet (modern French jais), ultimately referring to the ancient town of Gagae. Jet is either black or dark brown, but…
