Share this entry

Share this page

protamine

Syllabification: prot·a·mine
Pronunciation: /ˈprōdəˌmēn
 
/

Definition of protamine in English:

noun

Biochemistry
Any of a group of simple proteins found combined with nucleic acids, especially in fish sperm.
Example sentences
  • Sperm chromatin contains protamines that must be replaced by histones before undergoing condensation.
  • During the process of spermatogenesis in animal species, protamines replace histones and bind sperm DNA.
  • From recent developments in molecular biology, it is becoming clear that cationic chemical species, such as histone octamer, protamine, spermidine, etc. play an essential role in the packing of long DNA chains into the nucleus.

Origin

late 19th century: from proto- 'original' + amine.

Definition of protamine in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day tenebrous
Pronunciation: ˈtɛnɪbrəs
adjective
dark; shadowy or obscure