protamine

pro·ta·mine

 (prō′tə-mēn′, -mĭn) also pro·ta·min (-mĭn)

n.

Any of a group of arginine-rich proteins that bind to and package DNA in the sperm nucleus. Protamines are used in long-acting formulations of insulin and to neutralize the anticoagulant effects of heparin.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

protamine

(ˈprəʊtəˌmiːn)

n

(Biochemistry) any of a group of basic simple proteins that occur, in association with nucleic acids, in the sperm of some fish

[C19: from German: see proto-, amine]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

prot•a•mine

(ˈproʊ təˌmin, prɒˈtæm ɪn)

n.

any of a group of arginine-rich, strongly basic proteins that are not coagulated by heat.

[1870–75]

Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

Thesaurus

Noun

1.

protamine - a simple protein found in fish sperm; rich in arginine; simpler in composition than globulin or albumin; counteracts the anticoagulant effect of heparin simple protein - a protein that yields only amino acids when hydrolyzed

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