p in biochemistry
The abbreviation for protein. For example, p53 is a protein (53 kilodaltons in size).
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- p arm of a chromosome
The short arm of a chromosome. The “p” comes from the French “petit” meaning small. All human chromosomes have 2 arms – the p (short) arm and the q (long) arm – that are separated from each other only by a primary constriction, the centromere, the point at which the chromosome is attached to the […]
- PAPP-A
Pregnancy-associated plasma protein A.
- PAPPA
Pregnancy-associated plasma protein A.
- Paprika
A spicy seasoning ground from a variety of sweet red pepper (Capsicum annuum), the original source of vitamin C, isolated by the Hungarian scientist Albert Szent-Gyorgyi (1893-1986). The story goes that Szent-Gyorgyi did not like paprika and so took his plate of paprika pods into his laboratory, not wanting to offend his wife. As he […]
- Papule
A solid, rounded growth that is elevated from the skin. A papule is usually less than 1 cm (0.5 in.) across. Papules may open when scratched and become crusty and infected.