| 영문 | lactose | 한글 | 젖당 |
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| 설명 | 포도당 1몰과 갈락토오스 1몰로 이루어지는 이당류의 하나. 분자식 C22H22O11, 분자량 342.29. 유당이라고도 한다. 무색결정으로서 약간의 단맛이 있다. 우유 속에는 약 4.5%, 인유 속에는 약 7% 함유되어 있다. 환원기의 입체배치의 차에 의해 α형과 β형이 있으며, 20℃에서는 약 37.3% 대 62.7%의 비율로 존재한다. 이 상태의 락토오스를 평형락토오스라고 한다. 어린이의 영양제로 쓴다. |
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| BGLB | brilliant green lactose broth |
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| BTBL | bromothymol blue lactose |
| CLED | cystine-lactose-electrolyte-deficient [agar] |
| DCLS | deoxycholate citrate lactose saccharose |
| DLLI | dulcitol lysine lactose iron |
| Lac | Lactose |
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| NO Synthase | nitric oxide synthase |
| iNOS | 1.Inducible NO synthase |
| HPS | 3-Hexulosephosphate synthase |
| ALAS | 5'-aminolevulinate synthase |
| lactose synthase | <enzyme> An enzyme of the transferase class that catalyses the transfer of galactose from udpgalactose to glucose, forming lactose. The enzyme is a complex of the enzyme n-acetyllactosamine synthase and alpha-lactalbumin; the latter protein is present in lactating mammary gland cells where it alters the usual specificity of the former to make lactose synthesis the preferred reaction. Chemical name: UDPgalactose:D-glucose 4-beta-D-galactosyltransferase Registry number: EC 2.4.1.22 (12 Dec 1998) |
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| oral lactose tolerance test | A test for lactose deficiency; the plasma glucose response to an oral lactose load is measured as in the (oral) glucose tolerance test. (05 Mar 2000) |
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| lactose | The major sugar in human and bovine milk. Conversion of lactose to lactic acid by Lactobacilli etc. Is important in the production of yoghurt and cheese. (18 Nov 1997) |
| lactose carrier protein | <protein> The best known example is the product of the lacY gene, coded for in the lactose operon and responsible for the uptake of lactose by E. Coli. (18 Nov 1997) |
| lactose factors | Plasmids which determine the ability of a bacterium to ferment lactose. (12 Dec 1998) |
| lactose intolerance | A disorder characterised by abdominal cramps and diarrhoea after the consumption of food containing lactose (for example milk, ice cream), believed to occur due to a deficiency of intestinal lactase (enzyme that breaks down lactose), may appear first in young adults who have previously tolerated milk well as infants. (27 Sep 1997) |
| lactose-litmus agar | Agar made by adding 2% lactose and litmus to acid-free nutrient agar; formerly used in the identification of Salmonella typhi. (05 Mar 2000) |
| lactose operon | Group of adjacent and coordinately controlled genes concerned with the metabolism of lactose in E. Coli. The lac operon was the first example of a group of genes under the control of an operator region to which a lactose repressor binds. When the bacteria are transferred to lactose containing medium, allolactose (which forms by transglycosylation when lactose is present in the cell) binds to the repressor, inhibits the binding of the repressor to the operator and allows transcription of mRNA for enzymes involved in galactose metabolism and transport across the membrane (_ galactosidase, galactoside permease and thiogalactoside transacetylase). (18 Nov 1997) |
| lactose permease | <chemical> Chemical name: permease, lactose Synonym: lactose carrier protein, lactose permease m protein, lac permease, lactose transport protein, lactose transport system, lac carrier protein, lacs protein, lactose transport system, streptococcus thermophilus, lacy protein (26 Jun 1999) |
| lactose repressor | Protein (tetramer of 37 kD subunits) that normally binds with very high affinity to the operator region of the lactose operon and inhibits transcription of the downstream genes by blocking access of the polymerase to the promoter region. When the lactose repressor binds allolactose, its binding to the operator is reduced and the gene set is derepressed. (18 Nov 1997) |
| abequose synthase | <enzyme> Converts cdp-4-keto-3,6-dideoxy-d-glucose to cdp-3,6-dideoxy-d-galactose (cdp-abequose); requires NADPH, analogous to udp-glucose-4-epimerase Registry number: EC 5.1.3.- Synonym: rfbj gene product (26 Jun 1999) |
| 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) |
| acetolactate synthase | <enzyme> A flavoprotein that catalyses the formation of acetolactate from 2 moles of pyruvate in the biosynthesis of valine and the formation of acetohydroxybutyrate from pyruvate and alpha-ketobutyrate in the biosynthesis of isoleucine. Chemical name: Acetolactate pyruvate-lyase (carboxylating) Registry number: EC 4.1.3.18 (12 Dec 1998) |
| acridone synthase | <enzyme> Catalyses the condensation of n-methylanthraniloyl-CoA and 3 malonyl-CoA to produce 1,3-dihydroxy-n-methylacridone Registry number: EC 2.3.1.- (26 Jun 1999) |
| acyl-malonyl-ACP synthase | <enzyme> An enzyme condensing malonyl-ACP and acyl-cys-protein to 3-oxoacyl-ACP + cys-protein + CO2, and similar reactions, as steps in fatty acid synthesis; cys-protein is also a part of the fatty acid synthase complex. Synonym: acyl-malonyl-ACP synthase, beta-ketoacyl-ACP synthase. (05 Mar 2000) |
| adenylosuccinate synthase | <enzyme> A carbon-nitrogen ligase. During purine ribonucleotide biosynthesis, this enzyme catalyses the synthesis of adenylosuccinate from GTP, imp, and aspartate with the formation of orthophosphate and GDP. Chemical name: IMP:L-aspartate ligase (GDP-forming) Registry number: EC 6.3.4.4 (12 Dec 1998) |
Synonyms : N-Acetylgucosamide 1-4 beta Galactosyl Transferase, N Acetylgucosamide 1 4 beta Galactosyl Transferase, Synthase, Lactose, Synthetase, Lactose
| lactose synthase |
[EC 2.4.1.22] an enzyme of the transferase class that catalyzes the transfer of galactose from UDPgalactose to glucose, forming lactose. The enzyme is a complex of the enzyme glycoprotein 4-β-galactosyltransferase (q.v.) and α-lactalbumin; the latter protein is present in lactating mammary gland cells, where it alters the usual specificity of the former to make lactose synthesis the preferred reaction.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
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제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
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