| 영문 | protein | 한글 | 단백질 |
|---|---|---|---|
| 설명 | 탄소, 수소, 산소, 질소, 황을 함유하고 있는 유기화합물로, 모든 세포의 원형질을 이루고 있는 기본 구성물질이다. 단백질은 그 단위인 아미노산들이 펩티드결합에 의해 결합되어 있으며, 보통 20개의 아미노산들이 다른 순서와 조성을 가지고 배열되어, 독특한 하나의 단백질을 형성하게 된다. |
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| 영문 | prion | 한글 | 프리온 |
|---|---|---|---|
| 설명 | 프리온은 전염성 해면뇌병증이라고 부르기도 하는데 사람에서 발병하는 크로이츠펠트-야콥병, Gerstmann-Straussler-Scheinker병, 쿠루, 치명적 가족불면증과 양과 염소의 면양떨림병(scrapie), 밍크의 전염성 뇌병증과 소의 해면뇌병증(광우병) 등을 포함한다. 이 병들은 대부분 뇌의 회색질의 해면모양 병터를 일으키며, 임상소견은 빨리 진행하는 치매이다. 이 병을 앓고 있는 숙주의 뇌조직을 인간이나 영장류에 주입하면 동일한 병이 발생한다. 프리온 단백(PrP)은 1982년 Stanley Prusiner의 연구실에서 면양떨림병을 전파시킬 수 있는 물질로 처음 발견되었고, 이 물질이 정상인 α-helix 아형(PrPc)에서 β-pleated sheet 아형(PrPsc 혹은 PrPres)으로 입체구조가 바뀌면 proteinase K 등에 분해되지 않는 감염력과 전염성을 갖는 물질이 된다. 이와 같이 PrPsc는 정상세포의 PrPc에서 형성되는데 PrPsc의 형성메커니즘은 아직 밝혀지지 않았다. 이런 입체구조의 변화는 자연히 발생하는 경우에는 속도가 매우 느리고, 가족력을 갖는 질환과 같이 유전자의 변이가 있는 경우에는 더 빠르게 생길 수 있다. 사람의 PrPc 유전자인 PRNP는 20번 염색체의 단완에 있다. 높은 보존강도에도 불구하고 한 종에서 유래된 감염물질이 다른 종에서도 정상 단백 유전자를 갖고 있는 동물에는 쉽게 감염된다. PRNP 유전자를 없앤 동물은 PrPsc의 감염에 내성이 있는 것이 관찰되어서 PrPsc의 감염에 PRNP 유전자가 관여하는 것을 알 수 있다. 신경조직에 PrPsc가 축적되면 프리온병이 발생하는 것으로 생각하지만 신경세포의 손상이 발생하는 기전은 아직도 규명되지 않았다. 프리온병은 대부분 산발성으로 발생하고 일부는 유전병이나 전염병과 비슷한 발병양상을 보인다. 유전병인 경우에는 PRNP 유전자의 다양한 변이가 관여하는데, 현재까지 가족력을 갖는 크로이츠펠트-야콥병과 치명적 가족불면증을 일으키는 유전자의 변화가 알려졌다. 프리온병의 전염경로는 PrPsc에 오염된 수술 기수, 뇌파검사시의 전극, 각막 등의 이식장기 또는 사체로부터 제조된 성장호르몬 등이다. |
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| PRNP | prion protein |
|---|---|
| Prp | prion protein |
| PRN | Physicians Research Network; polyradiculoneuropathy; prion |
| MAP | malignant atrophic papulosis; mandibular angle plane; maturation-activated protein; maximal aerobic ... |
| MBP | major basic protein; maltose-binding protein; management by policy; mannose-binding protein; mean bl... |
| PrP's | Prion Protein's |
|---|---|
| PrP(C) | Prion protein |
| PRNP | Prion protein gene |
| G protein | 5'-triphosphate-binding protein |
| G-protein | Guanine nucleotide-binding protein |
| prion protein | Small, infectious proteinaceous particle, of non-nucleic acid composition because of its resistance to nucleases; the causative agent, either on a sporadic, genetic, or infectious basis, of six neurodegenerative diseases in animals, and four in humans; the latter include the spongiform encephalopathies of kuru, Creutzfeldt-Jakob disease, Gerstmann-Straussler-Scheinker syndrome and fatal familial insomnia. The gene encoding for the PrP is found on chromosome 20. Synonym: prion. (05 Mar 2000) |
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| prion | The word, for proteinaceous infectious agent, was coined in 1982 by neurologist Stanley Prusiner as part of a hypothesis regarding ailments bearing aetiologic resemblance to those caused by slow viruses (for instance, kuru). The hypothesis has been borne out by investigation. Prions are now believed responsible for several transmissible neurodegenerative diseases Origin: proteinaceous infectious particle (05 Mar 2000) |
|---|---|
| prion diseases | Transmissible and genetic neurodegenerative diseases of humans and animals caused by prions. The diseases are usually characterised by vacuolation in the gray matter and result in ataxia, motor disturbances, dementia, and progression to a fatal outcome. They include creutzfeldt-jakob syndrome, gerstmann-straussler syndrome, kuru, scrapie, fatal familial insomnia, bovine spongiform encephalopathy (encephalopathy, bovine spongiform), transmissible mink encephalopathy, and chronic wasting disease of mule deer and elk. The literature has sometimes referred to these as unconventional slow virus diseases. (12 Dec 1998) |
| acetoacetyl-acyl carrier protein synthase | <enzyme> E coli enzyme, that catalyses condensation of malonyl-acyl carrier protein plus acetyl-acyl carrier protein; not inhibited by cerulenin Registry number: EC 2.3.1.- Synonym: acetoacetyl-acp synthase (26 Jun 1999) |
| acid soluble spore protein | <molecular biology> A DNA binding protein in the spores of some bacteria, thought to stabilise the DNA in an A configuration, so protecting it from cleavage by enzymes or UV light. (18 Nov 1997) |
| acute-phase protein | <haematology> These plasma proteins (in addition to fibrinogen) increase 25% or more in response to inflammation and injury are under direct control of interleukin-6 (IL-6) (hepatocyte-stimulating factor). Other proteins which increase are ceruloplasmin, C3 and C4 which increase 50% or more; alpha-1 acid glycoprotein, alpha-1 antitrypsin, haptoglobin and fibrinogen (the major determinant of viscosity 1 ) which increase two- to fourfold; C-reactive protein (CRP) and serum amyloid A which increase several hundred-fold. Despite long-held clinical opinion to the contrary, available data indicate that neither ESR nor measurement of specific acute-phase reactants are useful in excluding underlying infection or inflammation regardless of the pretest probability. These proteins are secreted into the blood in increased or decreased quantities by hepatocytes in response to trauma, inflammation, or disease. They can serve as inhibitors or mediators of the inflammatory processes. Certain acute-phase proteins have been used to diagnose and follow the course of diseases or as tumour markers. See also: amyloid, c-reactive protein, erythrocyte sedimentation rate, viscosity. (25 Jun 1999) |
| acyl-(acyl-carrier-protein)-phospholipid acyltransferase | <enzyme> Catalyses the formation of phosphatidylethanolamine from acyl-acyl carrier protein and 2-acyl-sn-glycero-3-phosphoethanolamine Registry number: EC 2.3.1.40 Synonym: 2-acyl-gpe acyltransferase, 2-acylglycerophosphoethanolamine acyltransferase (26 Jun 1999) |
| acyl-(acyl-carrier-protein)-UDP-N-acetylglucosamine acyltransferase | <enzyme> E coli enzyme involved in lipid a biosynthesis; uses beta-hydroxymyristoyl-acyl carrier protein to form udp-3-monoacyl-n-acetylglucosamine; amino acid sequence given in second source Registry number: EC 2.3.1.129 Synonym: udp-aguatransferase, lpxa protein, udp-n-acetylglucosamine-3-acyltransferase, udp-n-acetylglucosamine 3-o-acyltransferase, udp-3-o-(r-3-hydroxymyristoyl)glucosamine-n-acyltransferase, lpxd protein, fira gene product, fira protein (26 Jun 1999) |
| acyl carrier protein | <protein> A small (77 peptides long) protein which binds six other enzymes involved in fatty acid synthesis. It was first isolated in E. Coli bacteria. (09 Oct 1997) |
| acyl carrier protein acylase | <enzyme> From E coli Registry number: EC 2.3.1.- Synonym: acp acylase (26 Jun 1999) |
| acyl protein synthetase | <enzyme> Component of the fatty acid reductase complex of luminescent bacteria Registry number: EC 2.3.1.- Synonym: luxe gene product, fatty acyl-protein synthetase (26 Jun 1999) |
| AKT1 protein kinase | <enzyme> Human homolog of v-akt oncogene product Registry number: EC 2.7.10.- Synonym: akt1 protein, human (26 Jun 1999) |
| AMP-activated protein kinase kinase | <enzyme> An endogenous kinase kinase; reactivates the inactive form of AMP-activated protein kinase (AMP-pk); phosphorylates the 63-kD subunit of AMP-pk Registry number: EC 2.7.1.- Synonym: AMP-pk reactivator, hmg CoA reductase kinase kinase (26 Jun 1999) |
| amyloid beta-protein | A 4 kD protein, 39-43 amino acids long, expressed by a gene located on chromosome 21. It is the major protein subunit of the vascular and plaque amyloid filaments in individuals with alzheimer's disease and in aged individuals with trisomy 21 (down syndrome). The protein is found predominantly in the nervous system, but there have been reports of its presence in non-neural tissue. (12 Dec 1998) |
| amyloid beta-protein precursor | A precursor to the amyloid-beta protein (beta/a4). Alterations in the expression of the amyloid beta-protein precursor (abpp) gene, located on chromosome 21, plays a role in the development of the neuropathology common to both alzheimer disease and down syndrome. Abpp is associated with the extensive extracellular matrix secreted by neuronal cells. Upon cleavage, this precursor produces three proteins of varying amino acid lengths: 695, 751, and 770. The beta/a4 (695 amino acids) or beta-amyloid protein is the principal component of the extracellular amyloid in senile plaques found in alzheimer disease, down syndrome and, to a limited extent, in normal aging. (12 Dec 1998) |
| amyloid precursor protein | <protein> Individuals with Alzheimer's disease are characterised by extensive accumulation of amyloid in the brain, referred to as senile plaques. These consist of a core of amyloid fibrils surrounded by dystrophic neurites. The principal component of the amyloid fibrils is B/A4, a peptide derived from the larger APP. The specific role of amyloid protein is unclear but it is thought that amyloid deposits may cause neurons to degenerate. Amyloid deposits also occur in brains of older Down's Syndrome patients. (04 May 1997) |
| prion protein |
(PrP) a 33?5 kD protein of uncertain function, in humans coded for by a gene on the short arm of chromosome 20. The 27?0 kD protease-resistant core is the functional, and perhaps only, component of prions; several isoforms have been identified and are responsible for prion disease. Extracellular prion protein aggregates into rod-shaped structures that resemble amyloid.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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|---|---|
| prion protein |
originally in its changed protease resistant form main ingredient of prions, which could be isolated from them. Later also used for the normal form - a protein found on the surface of various cells of animal origin and bound to the cell membrane.
출처: www.schuett-abraham.de/glossar-en.htm
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| prion protein |
Protease-resistant membrane protein, also known as PrP: a normal host-coded protein that becomes protease-resistant in infected tissue
출처: www.bseinquiry.gov.uk/report/volume6/glossary.htm
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제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
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제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
|---|