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aspartic adj.aspartic acid 【化學】天冬氨酸。

aspartic acid

Dna sequence analysis showed that the cloned nk gene was highly homologous to the sequence reported by nakamura . the deduced amino acid sequence also had the conserved sequences ( serine 221 , histidine 64 , and aspartic acid 32 ) which was essential for the catalytic center of serine proteases . the nk gene was then cloned into the transfer vector pvl1393 本實驗以b . subtilis ( natto )基因組dna為模板擴增了nk基因,測序結果顯示與nakamura報道的納豆激酶基因高度同源,其氨基酸序列也含有絲氨酸蛋白酶的活性保守中心( serine221 , histidine64 , asparticacid32 ) 。

Considering that aspartic acid ( d ) and glutamic acid ( e ) are very similar to each other , together with the biological function of the landmark , thus that the two landmarks can be regarded as no difference ; 3 ) conservative cysteine in terms of their numbers and positions in the extracellular domain . in ghr1 group , fghrl and zfghrl have seven cysteins , which are the same as that of quadruped . in ghr2 group which includes cohoghr isf1 , cohoghr isf2 , chghr , fghr2 and zfghr2 , the cysteine number and positon are very similar to each other but are different from ghr1 group . especially , the fghr2 has five cysteins that is one more than zfghr2 ; 3 ) conservative boxl domain . with all the ghrs identified so far , boxl are comprised of ppxpxp ( x represents any amino acid ) 在fghri和zfghri都為7個,數目和四足動物ghr一致;在fghrz胞外膚氨酸殘基為5個, zfghrz為4個,和同屬于ghrz的eohoghrisfl 、 eohoghrisfz 、 ehghr基本保持一致,但是卻和傳統的ghri有比較大的區別; 3 )本試驗克隆和分離得到ghri和ghrz以及所有目前發表的ghr都有比較保守的boxl結構域,氨基酸組成為ppxpxp ,研究表明最后兩個脯氨酸殘基作用最大; 4 )在所有ghr中都完全一致的boxz ,序列為料efi ; 5 )在ghri和ghrz胞內部分都比較保守的酪氨酸殘基,他們被認為在信號傳導中起作用。

4 . the magnesium ions , l - cystine , tyrosine , dl - aspartic acid , l - lysine , and the mixed system of magnesium ions and amino acid were used as effective soft - templates to regulate and control the crystallization of caccb , respectively 以鎂離子、 l -胱氨酸、 l -酪氨酸、 dl -天冬氨酸、 l -賴氨酸以及它們的混合體系為模板,研究了其對碳酸鈣晶體生長的調控作用。

As expected from the reaction mechanism , the carboxyl groups of aspartic and glutamic acid residues were not modified , while the amino groups that could react with the activated peptides were concomitantly protected by formylation 如反應機理所預測的那樣,天門冬氨酸和谷氨酸殘基未被修飾,而能與活性肽反應的氨基則同時被甲酰化保護起來。

All proteases use water to cut their respective proteins , and enzymes in the aspartyl protease family employ a pair of aspartic acids to activate a water molecule for this purpose 所有的蛋白酶都會利用水來切割其作用的蛋白質,而天冬胺酸蛋白酶家族的成員,則還會利用兩個天冬胺酸分子來活化水分子,以利蛋白質的切割。

( 2 ) l - cystine , tyrosine , dl - aspartic acid , l - lysine were used as soft - templates to regulate and control the crystallization of caco3 . the effects of different amino acid to the growth of caco3 ( 2 )分別以l一膚氨酸、 l一酪氨酸、 dl一天冬氨酸、 l一賴氨酸作為軟模板,分別研究了其對碳酸鈣晶體生長的影響。

The optimal temperature , the optimal ph value and the optimal substrate ( l - aspartic acid ) concentration for the enzymatic reaction by adl were 40 , 5 . 0 and 66 . 5 ~ 133g / l , respectively 對固定化細胞性質進行的初步研究發現,其最適溫度為40 ,最適ph為5 . 0 ,最適底物濃度范圍為66 . 5 133g l 。

Dl - aspartic acid has been synthesized from maleic anhydride and ammonia , the yield of dl - aspartic acid was above 70 % which is much higher than those reported in the literature 摘要以順丁烯二酸酐與氨水為原料合成dl -天冬氨酸,使其得率由現有的63 %提高到70 %以上,并對其反應機理進行了研究。

Members of this subset ? which includes the protease involved in replicating hiv , the virus that causes aids ? use aspartic acid , a type of amino acid , to catalyze the protein - cutting reaction 這群蛋白酶會利用天冬胺酸這種胺基酸來催化蛋白切割反應,其成員包括參與愛滋病毒hiv復制的蛋白酶。

This result suggested that gamma - secretase , like beta - secretase , contains a pair of aspartic acids essential for catalyzing the protein - cutting reaction 這個結果暗示,分泌酶就像分泌酶一樣,也含有催化蛋白切割反應所必需的一對天冬胺酸。

Aspartic acid an amino acid formed by transamination , in which the amino group of dlutamic acid is transferred to oxaloacetic acid 天冬氨酸:由轉氨基作用形成的一種氨基酸,谷氨酸的氨基基團被轉移到草酰乙酸中。

L - aspartic acid is a non - essential , acidic , genetically coded amino acid . found especially in young sugar cane and sugar - beet molasses 天冬氨酸是一種非必需的酸性氨基酸,尤指從小的甘蔗和甜菜的糖蜜中提取的。

Assembly and structural characteristics of supramolecular l - aspartic acid pillared layered double hydroxides 天冬酸插層水滑石的組裝及其結構表征

L - aspartic acid 天冬氨酸

L - aspartic acid 天門冬氨酸

D - aspartic acid d 天冬氨酸

L - aspartic acid l 天冬氨酸

Dl - aspartic acid 天門冬氨酸

Dl - aspartic acid dl 天冬氨酸