Definition of protamine in English:

protamine

noun ˈprəʊtəmiːnˈproʊdəˌmin

Biochemistry

Any of a group of simple proteins found combined with nucleic acids, especially in fish sperm.
〔生化〕（鱼）精蛋白
Example sentencesExamples
- 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.
- If insulin were combined with protamine it would prolong the period of absorption of the hormone.
- During the process of spermatogenesis in animal species, protamines replace histones and bind sperm DNA.
- Some of the unique human protamines are found in human fetal brain tissue and the adult human medulla, indicating that their function may not be specific to sperm.
- Sperm chromatin contains protamines that must be replaced by histones before undergoing condensation.

Origin

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

Definition of protamine in US English:

protamine

nounˈproʊdəˌminˈprōdəˌmēn

Biochemistry

Any of a group of simple proteins found combined with nucleic acids, especially in fish sperm.
〔生化〕（鱼）精蛋白
Example sentencesExamples
- If insulin were combined with protamine it would prolong the period of absorption of the hormone.
- Some of the unique human protamines are found in human fetal brain tissue and the adult human medulla, indicating that their function may not be specific to sperm.
- 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.
- During the process of spermatogenesis in animal species, protamines replace histones and bind sperm DNA.
- Sperm chromatin contains protamines that must be replaced by histones before undergoing condensation.

Origin

Late 19th century: from proto- ‘original’ + amine.

词汇	protamine
释义	Definition of protamine in English: protamine noun ˈprəʊtəmiːnˈproʊdəˌmin Biochemistry Any of a group of simple proteins found combined with nucleic acids, especially in fish sperm. 〔生化〕（鱼）精蛋白 Example sentencesExamples 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. If insulin were combined with protamine it would prolong the period of absorption of the hormone. During the process of spermatogenesis in animal species, protamines replace histones and bind sperm DNA. Some of the unique human protamines are found in human fetal brain tissue and the adult human medulla, indicating that their function may not be specific to sperm. Sperm chromatin contains protamines that must be replaced by histones before undergoing condensation. Origin Late 19th century: from proto- 'original' + amine. Definition of protamine in US English: protamine nounˈproʊdəˌminˈprōdəˌmēn Biochemistry Any of a group of simple proteins found combined with nucleic acids, especially in fish sperm. 〔生化〕（鱼）精蛋白 Example sentencesExamples If insulin were combined with protamine it would prolong the period of absorption of the hormone. Some of the unique human protamines are found in human fetal brain tissue and the adult human medulla, indicating that their function may not be specific to sperm. 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. During the process of spermatogenesis in animal species, protamines replace histones and bind sperm DNA. Sperm chromatin contains protamines that must be replaced by histones before undergoing condensation. Origin Late 19th century: from proto- ‘original’ + amine.
随便看	inimically inimicalness inimical to inimitability inimitability inimitable inimitableness inimitably inimitably in imitation of in india dacoity in india kathak in india & malaysia in india & malaysia godown in india or burma dacoity in india & persia zenana in india sadhu in indignation in instalments in/into a jumble in/into a muddle in/into bed with in/into chaos in/into confusion in/into disorder