 |
 |
 |
 |
 |
 |
||
 |
 |
 |
 |
 |
| 4 | 1/1 | 返回列表 |
| 查看: 889 | 回復(fù): 3 | ||
lizhijiang主管區(qū)長
|
[求助]
關(guān)于無脊椎魚類卵膜的化學(xué)成分構(gòu)成
|
|
很想知道像海膽、海星等無脊椎魚類中，魚卵卵膜是由什么成分構(gòu)成的，如蛋白質(zhì)、多糖、磷脂？其組成百分比大概多少？ ps：想用一種類似于蛋白酶的酶類，降解卵膜。想知道卵膜的這些成分，以明機理！ 望各位蟲友及老師指導(dǎo)，萬分感激額！ |
回復(fù)此樓» 猜你喜歡
材料專碩306英一數(shù)二
已經(jīng)有7人回復(fù)
-
求生物學(xué)調(diào)劑
已經(jīng)有3人回復(fù)
-
材料科學(xué)與工程339求調(diào)劑
已經(jīng)有10人回復(fù)
-
309求調(diào)劑
已經(jīng)有10人回復(fù)
-
生物學(xué) 296 求調(diào)劑
已經(jīng)有11人回復(fù)
-
321求調(diào)劑
已經(jīng)有8人回復(fù)
-
一志愿鄭大085600，310分求調(diào)劑
已經(jīng)有6人回復(fù)
-
295材料工程專碩求調(diào)劑
已經(jīng)有11人回復(fù)
-
08工科275分求調(diào)劑
已經(jīng)有9人回復(fù)
-
材料調(diào)劑
已經(jīng)有12人回復(fù)
» 本主題相關(guān)價值貼推薦，對您同樣有幫助:
- linux gaussian能讓計算暫停嗎？
已經(jīng)有6人回復(fù)
- 電化學(xué)合成銅銦硒，容易脫落
已經(jīng)有7人回復(fù)
- 那位高手能指點一下我，磁性薄膜的最大磁能積這么算？
已經(jīng)有5人回復(fù)
- 飽和溴水配置
已經(jīng)有4人回復(fù)
- 翻譯一段話 英譯漢 關(guān)于合成方面的論文
已經(jīng)有2人回復(fù)
- 【材料及化學(xué)】中國科學(xué)院深圳先進技術(shù)研究院納米醫(yī)療技術(shù)中心招聘啟事
已經(jīng)有7人回復(fù)
- 【求助/交流】魚類為什么是脊椎動物中最適合水生生活的一大類群？
已經(jīng)有10人回復(fù)
zouhongda
超級版主
- 應(yīng)助: 0 (幼兒園)
- 金幣: 1524
- 紅花: 2
- 帖子: 120
- 在線: 91小時
- 蟲號: 260454
- 注冊: 2006-06-17
- 專業(yè): 植物生理與生化
【答案】應(yīng)助回帖
★ ★ ★ ★ ★
lizhijiang(金幣+5): thanks 2011-08-26 07:11:10
lstt09nk(金幣+5): 熱心 2011-08-26 09:23:05
lizhijiang(金幣+5): thanks 2011-08-26 07:11:10
lstt09nk(金幣+5): 熱心 2011-08-26 09:23:05
|
暈，這個問題有些奇怪。海膽海星均為無脊椎動物，為棘皮動物門，而魚則是脊椎動物啊。你是想問海膽海星卵膜的組成，還是魚卵細(xì)胞膜的組成？但因為是細(xì)胞膜，應(yīng)該幾乎都為磷脂雙分子層，主要為磷脂和蛋白質(zhì)。其中的磷脂蛋白質(zhì)均會被修飾。 下面一段材料是卵黃膜在不同生物中的叫法。你可以找到相應(yīng)的英文單詞在加上你所想查詢動物的拉丁名或英語一起在GOOGLE查詢，一般就會有結(jié)果了。 The layer of material that covers an animal egg cell. Primary membranes develop in the ovary and cover the egg surface in addition to the normal plasma membrane. The primary membrane is called the vitelline membrane in insects, molluscs, birds, and amphibians, the chorion in tunicates and fish, and the zona pellucida in mammals. Insects have a second thicker membrane, also called the chorion. Secondary membranes are secreted by the oviducts and parts of the genital system while the egg is passing to the outside. They include the jelly coat of frogs' eggs and the albumen and shell of birds' eggs. |
2樓2011-08-25 21:05:47
lizhijiang
主管區(qū)長
- 應(yīng)助: 18 (小學(xué)生)
- 金幣: 3588.3
- 散金: 263
- 紅花: 64
- 帖子: 1364
- 在線: 483.2小時
- 蟲號: 848418
- 注冊: 2009-09-15
- 性別: GG
- 專業(yè): 食品科學(xué)基礎(chǔ)
3樓2011-08-28 17:37:46
zouhongda
管理員
- 應(yīng)助: 0 (幼兒園)
- 金幣: 1524
- 紅花: 2
- 帖子: 120
- 在線: 91小時
- 蟲號: 260454
- 注冊: 2006-06-17
- 專業(yè): 植物生理與生化
★ ★ ★ ★ ★
adslye(金幣+5): 非常感謝您的熱忱回復(fù)~歡迎常來！ 2011-08-29 10:00:41
adslye(金幣+5): 非常感謝您的熱忱回復(fù)~歡迎常來！ 2011-08-29 10:00:41
|
文獻比較老，例如Structure and composition of the fish egg chorion (Carassius auratus)*，Studies on the composition, structure and differentiation of fish egg chorion，如果能下載的話，你可看他的前言部分，應(yīng)該會有提及，膠原蛋白是都有的，因為細(xì)胞膜的基底膜幾乎都有。 這是另一篇文獻里關(guān)于磷脂的含量的The lipid class compositions of Atlantic herring eggs and larvae were determined immediately before fertilization, after fertilization and at various times during subsequent embryonic and early larval development. Total lipid constituted 15% of the dry wt of ripe eggs, 70% of the total lipid being polar lipid with phosphatidylcholine (PC) accounting for almost 90% of the polar lipid. In general, the total lipid content decreased gradually during embryogenesis and in particular during larval development. Within 3 hr after fertilization the relative percentage of neutral lipid decreased slightly. This was followed by a general decrease in polar lipid which, by the stage of yolk sac absorption, was reduced to 52% of the total lipid. The decreased percentage of polar lipid was due entirely to a decrease in PC, which was reduced to 66% of the polar lipids at the stage of yolk sac absorption. The accompanying increase in the percentage of neutral lipids was mainly due to increased percentages of triacylglycerols (TAG) up to yolk sac absorption and cholesterol esters in the larval stages. During the first 4 days after hatching, phospholipids and to a lesser extent cholesterol were preferentially depleted in the yolk sacs, which also had higher levels of free fatty acids. The results are discussed in relation to possible roles of different lipids during embryonic and early larval development. 里面有提及，我也沒太細(xì)看，你要想查的更仔細(xì)一些，就可以在GOOGLE中輸入你要查詢的物種，相應(yīng)卵黃膜的英文單詞，再加個膠原蛋白collagen 磷脂Phospholipids什么的. 例如 the composition of chorion Phospholipids. |
4樓2011-08-29 08:48:54
相關(guān)版塊跳轉(zhuǎn)
我要訂閱樓主 lizhijiang 的主題更新
| 4 | 1/1 | 返回列表 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 材料調(diào)劑 +11 | 一樣YWY 2026-03-31 | 11/550 |
|
|---|---|---|---|---|
|
[考研] 282求調(diào)劑 +12 | ycy1201 2026-04-01 | 14/700 |
|
|
|
[考研] 安徽大學(xué)專碩生物與醫(yī)藥專業(yè)(086000)324分，英語已過四六級，六級521，求調(diào)劑 +10 | 美味可樂雞翅 2026-03-26 | 12/600 |
|
|
|
[考研] 0703一志愿9，初試成績：338，四六級已過，有科研經(jīng)歷，求調(diào)劑！ +8 | Zuhui0306 2026-03-25 | 8/400 |
|
|
|
[考研] 土木304求調(diào)劑 +5 | 兔突突突， 2026-03-31 | 6/300 |
|
|
|
[考研] 0856調(diào)劑 +7 | 曲聽筠 2026-03-30 | 7/350 |
|
|
|
[考研] 340求調(diào)劑 +4 | 希望如此i 2026-03-31 | 4/200 |
|
|
|
[考研] 考研調(diào)劑求助 +7 | 13287130938 2026-03-31 | 7/350 |
|
|
|
[考研]
 一志愿武漢理工，總分321，英一數(shù)二，求老師收留。
+12
|
nnnnnnn5 2026-03-25 | 12/600 |
|
|
|
[考研] 085600 295分求調(diào)劑 +13 | W55j 2026-03-30 | 15/750 |
|
|
|
[考研] 08工科，295，接受跨專業(yè)調(diào)劑 +6 | lmnlzy 2026-03-30 | 6/300 |
|
|
|
[考研] 08工科求調(diào)劑286 +5 | tgs_001 2026-03-28 | 5/250 |
|
|
|
[有機交流]
甲基亞磺磺酸鈉和甲基磺酸酯反應(yīng)機理
 10+3
|
kaobao456 2026-03-29 | 4/200 |
|
|
|
[考研] 調(diào)劑 +4 | GK72 2026-03-30 | 4/200 |
|
|
|
[考研] 279求調(diào)劑 +12 | j的立方 2026-03-29 | 12/600 |
|
|
|
[考研] 297求調(diào)劑 +17 | 田洪有 2026-03-26 | 18/900 |
|
|
|
[考研] 一志愿北京工業(yè)大學(xué)，324分求調(diào)劑 +6 | 零八# 2026-03-28 | 6/300 |
|
|
|
[考研] 壓國家一區(qū)線，求導(dǎo)師收留，有恩必謝！ +7 | 迷人的哈哈 2026-03-28 | 7/350 |
|
|
|
[考研] 286求調(diào)劑 +12 | PolarBear11 2026-03-26 | 12/600 |
|
|
|
[考研] 331環(huán)境科學(xué)與工程求調(diào)劑 +3 | 熠然好運氣 2026-03-27 | 3/150 |
|