any of a group of arginine-rich, strongly basic proteins that are not coagulated by heat, occurring primarily in the sperm of fish.
any of a group of basic simple proteins that occur, in association with nucleic acids, in the sperm of some fish
protamine pro·ta·mine (prō’tə-mēn’, -mĭn) or pro·ta·min (-mĭn)
Any of a group of simple proteins found in fish sperm that are strongly basic, are soluble in water, are not coagulated by heat, and yield chiefly arginine upon hydrolysis. In purified form, they are used in a long-acting formulation of insulin and to neutralize the anticoagulant effects of heparin.
adjective 1. (of hermaphrodite or monoecious plants) maturing the anthers before the stigma 2. (of hermaphrodite animals) producing male gametes before female gametes Compare protogynous
noun, Ophthalmology. 1. a defect of vision characterized by a diminished response of the retina to red.
noun, Ophthalmology. 1. a defect of vision in which the retina fails to respond to red or green. noun 1. a form of colour blindness characterized by a tendency to confuse reds and greens and by a loss of sensitivity to red light protanopia pro·ta·no·pi·a (prō’tə-nō’pē-ə) n. A form of colorblindness characterized by defective perception […]
phrase See pro tanto
noun, plural protases [prot-uh-seez] /ˈprɒt əˌsiz/ (Show IPA) 1. the clause expressing the condition in a conditional sentence, in English usually beginning with if. Compare apodosis. 2. the first part of an ancient drama, in which the characters are introduced and the subject is proposed. Compare catastasis, catastrophe (def 4), epitasis. 3. (in Aristotelian logic) […]