Catabolicpathwaysforalanine,glycine,serine,cysteine,tryptophan
Amino acids in the diet have one of two fates - either they are incorporated into proteins or they are broken down for energy and metabolic intermediates. They are not stored and the body also does not excrete them intact. The metabolic pathways that lead to degradation of amino acids funnel their carbon chains into metabolic intermediates that generate energy, and their amino groups into the urea cycle to be excrete......阅读全文
Catabolic－pathways－for－alanine,－glycine,－serine,－cysteine,－tryptophan
Amino acids in the diet have one of two fates - either they are incorporated into proteins or they are broken down for energy and metabolic intermedia
Biosynthesis－of－Glycine－and－Serine
Intermediates in energy production pathways such as glycolysis and the Kreb's cycle are commonly the starting point for the biosynthesis of amino
Biosynthesis－of－Cysteine－from－serine－in－bacteria－and－plants
In animals cysteine is synthesized from homocysteine, a produce of the essential amino acid methionine. In the absence of dietary methionine, animals
Catabolic－Pathways－for－Methionine,－Isoleucine,－Threonine－and－Valine
The carbon chains of methionine, isoleucine, threonine and valine are broken down to produce succinyl-CoA, which feeds into the Citric Acid Cycle. Met
Catabolic－Pathways－for－Arginine－－Histidine－Glutamate－Glutamine,－and－Proline
Glutamine is converted to glutamate by glutaminase or several other enzymes by the removal of the amide nitrogen. Proline is first converted to a Schi
各种氨基酸对植物的作用
丙氨酸（Alanine）：丙氨酸可以增加叶绿素的合成，调节气孔的开放，并对病菌具有抵御作用。 精氨酸（Arginine）：精氨酸能增强根系发育，作为植物内源激素多胺合成的前体，并提高作物的抗盐胁迫能力。 天冬氨酸（Aspartic acid）：天冬氨酸有助于提高种子发芽率，促进蛋白质合成，并
龟甲的主要成分介绍
龟板含动物胶、角蛋白（Keratin）、脂肪（Fat）和钙、磷等． 亦含天门冬氨酸（Asparagic acid）、苏氨酸（Threonine）、丝氨酸（Serine）、谷氨酸（Glutamic acid）、脯氨酸（Proline）、甘氨酸（Glycine）、丙氨酸（Alanine）、半胱氨酸
构成蛋白质氨基酸有哪些类型
甘氨酸 (Glycine, Gly)：是分子量最小的氨基酸，因其侧链仅为一个氢原子，从而使得其在蛋白质结构中具有极大的灵活性。 丙氨酸 (Alanine, Ala)：具有较小的疏水性侧链，使其能够在蛋白质内部稳定存在。 缬氨酸 (Valine, Val)：是一个分支链氨基酸，其较大的疏水性侧
常用核酸和氨基酸代码
Amino Acids TableHere is a list of the standard one-letter amino acid codes and their three-letter equivalents. The synonymous codons and their depict
实验室常用英文术语集锦（三）
培养箱incubator 超滤器Ultrahigh Purity Filter 超低温冰箱Ultra-low Temperature Freezer 超声破碎仪Ultrasonic Cell Disruptor 紫外观察灯Ultraviolet Lamp
Biosynthesis－of－Cysteine－in－mammals
In animals, the sulfur-containing amino acid cysteine is synthesized from homocysteine, which is itself derived from metabolism of the amino acid meth
脑脊液氨基酸的正常值
HPLC法： 天冬氨酸(Aspartic Acid，Asp) 1.6±1.7μmol/L 谷氨酸(Glutamic Acid，Glu) 4.6±1.2μmol/L 丝氨酸(Serine，Ser) 33.9±4.9μmol/L 组氨酸(Histidine，His) 10.0±2.7μmol
脑脊液氨基酸的正常值
HPLC法： 天冬氨酸(Aspartic Acid，Asp) 1.6±1.7μmol/L 谷氨酸(Glutamic Acid，Glu) 4.6±1.2μmol/L 丝氨酸(Serine，Ser) 33.9±4.9μmol/L 组氨酸(Histidine，His) 10.0±2.7μmol
Alanine－Transaminase－Activity－Assay
实验概要Alanine Transaminase (ALT) is a transaminase (EC 2.6.1.2) also called serum glutamic pyruvic transaminase (SGPT). Alanine Transaminase is found
Biosynthesis－of－Tryptophan－in－Bacteria－and－Plants
The aromatic amino acid tryptophan is an essential nutrient, meaning that humans and animals do not themselves have the biosynthetic machinery to synt
Catabolic－pathway－for－asparagine－and－asparate
Aspartate and asparagine are catabolized into oxaloacetate and the Kreb's cycle in a fairly direct pathway for amino acids with four carbons. The
Feeder－Pathways－for－Glycolysis
The glycolytic pathway begins with the simple sugar glucose and leads to pyruvate and eventually the Kreb's cycle. Dietary carbohydrates include a
离子肽的合成过程中涉及哪些氨基酸？
丙氨酸（Alanine）：一种非极性氨基酸，常用于合成疏水性肽段。 甘氨酸（Glycine）：一种极性氨基酸，常用于合成肽链的连接部分。 丝氨酸（Serine）：一种极性氨基酸，可以形成磷酸酯键。 天冬氨酸（Aspartic acid）：一种极性氨基酸，可以形成磷酸酯键。 谷氨酸（Glu
龟甲的成分及药理作用
主要成分 龟板含动物胶、角蛋白（Keratin）、脂肪（Fat）和钙、磷等． 亦含天门冬氨酸（Asparagic acid）、苏氨酸（Threonine）、丝氨酸（Serine）、谷氨酸（Glutamic acid）、脯氨酸（Proline）、甘氨酸（Glycine）、丙氨酸（Alanine
The－salvage－pathway－from－serine－to－phosphatidylcholine
The biosynthesis of membrane phospholipids occurs through distinct pathways in mammals and bacteria. In the mammalian pathway for the synthesis of pho
扁蓄的化学成分
全草含黄酮类成分：槲皮素（quercetin），扁蓄甙（avivcularin），槲皮甙（quercitrin），牡荆素（vitexin），异牡荆素（isovitexin），木犀草素（luteolin），鼠李素-3-半乳精甙（rhamnetin-3-galactoside），金丝桃甙（hyper
人参叶的化学成分
人参茎叶含三萜类及其皂甙成分：人参皂甙（ginsenoside)Rb1、Rb2、Rc、Re、Rf、Rg1、Rg3、Rg4、Rh1、Rh2、Rh3、F1、F2、F3、F4、La，20（R）人参皂甙[20（R）-ginsenoside]Tg2、Rh2、20（S）人参皂甙Rh2[20（S）-ginen
Human－Cytomegalovirus－and－Map－Kinase－Pathways
To replicate in the host cell, viruses commandeer cellular signaling pathways. Cytomegalovirus (CMV) is a DNA virus with that is widespread in the pop
水牛角的化学成分
理论一：水牛角可作为犀角的代用品，因其成分与犀角大同小异。 一、甾醇类，均含胆甾醇； 二、氨基酸，均含丙氨酸、精氨酸、天冬氨酸、胱氨酸、亮氨酸、脯氨酸、酪氨酸、组氨酸、缬氨酸； 三、肽类：碱性肽类水解，两者都产生精氨酸、赖氨酸、组氨酸、甘氨酸、丙氨酸； 四、胍基衍生物，均有精氨酸及胍（g
Effects－of－calcineurin－in－Keratinocyte－Differentiation
The differentiation of keratinocytes constantly replenishes the upper layers of human skin we lose each day. One factor that contributes to terminal k
Regulation－of－MAP－Kinase－Pathways－Through－Dual－Specificity－Phosphatases
Mitogen-activated protein (MAP) kinases are important players in signal transduction pathways activated by a range of stimuli and mediate a number of
脑脊液氨基酸的正常值及临床意义
正常值 HPLC法： 天冬氨酸(Aspartic Acid，Asp) 1.6±1.7μmol/L 谷氨酸(Glutamic Acid，Glu) 4.6±1.2μmol/L 丝氨酸(Serine，Ser) 33.9±4.9μmol/L 组氨酸(Histidine，His) 10.0±2.
脑脊液氨基酸的正常值及临床意义
正常值 HPLC法： 天冬氨酸(Aspartic Acid，Asp) 1.6±1.7μmol/L 谷氨酸(Glutamic Acid，Glu) 4.6±1.2μmol/L 丝氨酸(Serine，Ser) 33.9±4.9μmol/L 组氨酸(Histidine，His) 10.0±2.
地黄的化学成分
地黄的化学成分以甙类为主，其中又以环烯醚萜甙类为主。从鲜地黄分得的环烯醚萜甙有：益母草甙（leonuride），桃叶珊瑚甙（aucubin），梓醇（catalpol），地共同甙（rehmannioside）A、B、C、D，美利妥双甙（melittoside），都桷子甙（melittoside），
蝉脱的化学成分
1．黑蚱，蝉蜕含大量甲壳质及蛋白质、氨基酸、有机械到。含氮7.86%，灰分14.57%。 2．蚱蝉，蝉蜕内含甲壳质（chitin），蝶啶类色素；异黄质喋呤（isoxanthopterin），赤蝶（erythropterin），蛋白质，氨基酸，有机酸，酚类化合物。氨基酸的相对含量以丙氨酸（al