3. 2. 1. 4 ) which was prepared by precipitation of the water extract of the culture of aspergillus niger with ammonium sulfate and desalted by sephadex g - 25, and was further fractionated by two steps of deae - toyopearl 650m and one step of poros 20pi chromatography. the other was a p - glucosidase ( ec. 3. 2. 1. 21 ) which was prepared by the above g - 25 fractions and was further fractionated by two steps of deae - toyopearl 650m chromatography. the specific activity of the endoglucanase with sodium carboxymethyl cellulose was estimated to be 433. 38 hj / mg
-葡萄糖苷酶對水
楊素的比活力為597 . 12iu mg ,並對其專一,不能水解棉花和羧甲基纖維素鈉;分子量為117 . 5kda ,加dtt後分子量不變;該組分最適ph和溫度分別為4 . 5和70 ,在ph5 . 0 、 50下對水
楊素鈉的米氏常數km為3 . 73mg ml ,最大反應速度vm為0 . 088mg葡萄糖( ml ? min ) ;與文獻中從
黑麴黴中分離的-葡萄糖苷酶比較后發現,該組分是一個新的-葡萄糖苷酶。
When it was beginning to come on dark we poked our heads out of the cottonwood thicket, and looked up and down and across ; nothing in sight ; so jim took up some of the top planks of the raft and built a snug wigwam to get under in blazing weather and rainy, and to keep the things dry
天快
黑下來了,我們在白
楊枝椏里探出腦袋,朝四下里上下左右張望了一番,什麼也沒有見到。傑姆便拿起了木筏子上層的幾塊木板,搭起了一個挺舒適的小窩棚,好在太陽辣辣的時候或者下雨的時候,能有個保持東西乾燥的去處。
Some 30 german skiers at the winter olympics have to wear caps in belgian national colours after team sponsor adidas supplied them with the wrong gear. some 30 german skiers at the winter olympics have to wear caps in belgian national colours after team sponsor adidas supplied them with the wrong gear. an adidas spokesman said on wednesday the firm had provided german athletes in biathlon and nordic combined with caps in belgium ' s black - gold - red instead of germany ' s black - red - gold
據路透社2月15日報道,阿迪達斯公司的一位發言人
楊魯瑙當日表示,該公司為參加冬季兩項和北歐兩項比賽的德國運動員提供的帽子上所印製的是比利時國旗所特有的從左到右
黑金紅三色圖案,而德國國旗的顏色排列順序則應該為
黑紅金。
So this spirited 1980s production was both an homage and continuance of those great days, as no less than three kung - fu choreographers worked with such fine kung - fu artists as shaws first great international star, lo lieh, and the amazing kicker from the cult venoms films, sun chien, to win the martial arts world championship
劇情描述,岳華飾白水宮主人紫衣侯,與神火宮主人羅烈金河宮主人高美昭青木宮主人王戎及
黑土宮主人
楊志卿,合稱五大行宮,統領中原武林。
The results showed that the predominant host animal of dayangshu district was apodemus agrarius, and presently it has changed to the mixed type of hfrs
結果表明,大
楊樹地區的疫源地性質是
黑線姬鼠為主要宿主動物的腎綜合征出血熱自然疫源地,目前已演變為姬鼠型為主的混合型疫區。
Choline dehydrogenase ( cdh ) isolated from escherichia coli, can help the expression of glycine betaine efficiently. to get some salt - tolerant plants, the cdh gene, mediated by agrobacterium, was transformed to the haploid of populus simoniixp. nigra
本實驗以農桿菌( agrobacteriumtumefaciens )為介導進行遺傳轉化,將編碼cdh的耐鹽基因( bet - a )導入小
黑楊( populussimonii p . nigra )單倍體植株( haploid )的基因組內,以期獲得耐鹽植株。
Variation for phenolic glycosides and growth of a populus deltoides back - cross population
美洲
黑楊回交群體生長量與酚甙類次生代謝產物含量的變異
In this paper, several factors affecting transformation of the haploid such as ph etc. were studied, and the tissue culture system was o ptimized
實驗中對小
黑楊單倍體組培系統進行了優化,並探討了影響轉化率的幾個因素如ph值等。
By means of pcr amplification to total dna extracted from four transgenic plants, it indicated that bet - a gene had been integrated into the haploid of the hybrid genome
最終得到四個轉化株系,經pcr檢測,全部產生特異性擴增譜帶,證明bet - a基因已整合進小黑楊單倍體植株的基因組中。