有两个分子的

Pike protein consists of S1 and S2 subunit. S1 is head and S2 is rod-shape part, intermolecular effort can bind each other. S1 can bind with host cell epimembranal acceptor. S2 can fix integral Spike protein on the cellular membrane and mediate cell-fusion with virus and host cell. There are significant antigen determinant of virus in Spike protein, genic heterogenesis can effect viral pathogenicity. SARS-CoV Spike protein, which has 23 pieces larvaceous glycosylation sit, consists of 1256 amino acid. Its N-terminals and C-terminals is corresponding conservative.

蛋白是I型膜糖蛋白，介导病毒与宿主细胞膜上的受体结合并与宿主细胞膜相融合。S蛋白由S1和S2两个亚基组成。S1形成球状部分，S2形成棒状部分，两者之间通过分子间的作用力相互结合。S1能与宿主细胞上的受体结合，S2可把整个S蛋白固定在细胞膜上，并介导病毒包膜与宿主细胞膜融合。S蛋白上有重要的病毒抗原决定簇，S基因的突变会影响病毒的致病性。

The suction bond is non-invasive bonding object itself, such as glass, porcelain, plastics, and so on Binder's own strength, strong force, the structure of the polymer chain-like molecules attract the ability to bond two objects attract strong, unlike osmosis bonding needs to have a certain amount of pressure.

吸引式黏结的被黏结物体本身无渗透能力，如玻璃、瓷器、塑料等，全靠黏结剂的自身强度、强黏力、链状结构的聚合分子的吸引能力将两个物体吸引黏结牢固的，它不像渗透黏结需要有一定的压力。

Our previous studies have shown that ubiquitous overexpression of HmgD caused hemocytes proliferation and the formation of melanotic tumors in the Drosophila larvae. To clarify the mechanism of melanotic tumors appearance,we also generated RT-PCR analysis to test the transcriptional changes of PPAE and Spn27A,which encode the key factors in the phenoloxidasecascade pathway from larvae samples of mid-third instar,late-third instar and prior to pupation relative to wild type flies.Our result showed that in the HmgD overexpression mid-third instar larvae,the expression level.of Spn27A was lower than wild type,otherwise the expression level of PPAE was higher than wild type.It suggests that overexpression of HmgD affects the PO cascade pathway.

本研究组前期工作发现，过量表达HmgD引起果蝇幼虫体内血细胞增生，并出现黑色素瘤，为探讨HmgD过量表达导致了血细胞增生即形成黑色素瘤的分子机制，本研究分别提取三龄中期、后期和相对于野生型化蛹前时刻的幼虫的RNA，首先检测了编码酚氧化酶级联反应途径中的两个关键基因PPAE，Spn27A在突变体中的转录发生变化，结果发现，Spn27A在三龄中期的表达量低于野生型，而PPAE的表达高于野生型，表明过量表达HmgD影响了酚氧化酶级联反应途径，低水平的Spn27A不足以抑制PPAE的活性，活化的PPAE催化了PPO的活性，使其转变成有活性的PO，从而促进黑色素的生成，使果蝇体内产生黑色素瘤。

The X-ray crystal structure analysis of the complexes shows that all lanthanidecomplexes exhibit a tripodal ligand coordination mode, with three imino nitrogenfrom benzimidazolyl and pyridyl group, and one amino nitrogen atoms as donors.The ligands show two kinds of configuration: the fan-like and the pincer-like. Bothintra- and intermolecular π-π interactions are found in these complexes.

晶体结果表明，在所有的稀土配合物中，三脚架配体均用三个支脚上的苯并咪唑、吡啶环氮原子及一个顶端的氮原子和稀土离子进行配位，表现出三脚架式配位方式，同时，三脚架配体有风扇形及钳子形两种空间配位构型，并形成了分子内及分子间的π-π堆积作用。

To determine the effectiveness of combining laser therapy with an immunosuppressive approach, the investigators recruited 14 subjects, aged 12 to 63 years, with Fitzpatrick skin types II to IV and having had vitiligo for a minimum of three months. A total of 43 vitiliginous lesions were randomized to receive either 308-nm excimer laser monotherapy twice weekly for six weeks or the laser sessions plus topical 0.1% tacrolimus ointment applied twice daily. Treated lesions were matched with untreated lesions on the subjects' opposite side.

为了确定结合雷射治疗与免疫抑制方式的效果，研究人员徵集14位受试者，年龄从12到63岁，患有Fitzpatrick皮肤类型II到VI的、而且有白斑至少3个月以上的患者；总共有43个白斑病灶被随机分派接受每周两次的308－nm准分子雷射治疗持续六周，或是雷射治疗加上0.1%局部tacrolimus软膏每天涂抹两次；治疗后的病灶再与受试者另外一边未接受治疗的病灶相比较。

Computation makes clear as a result, the smooth balance of power that 6 ammonia in 6 ammonia magnesium chloride form in nucleus and other electron breaks up in field, cent is two class, the first class 4 ammonia, the 2nd class 2 ammonia, when outside ambient changes, it is to shuck off 4 ammonia element likely most, additionally 2 ammonia are shucked off again after warming up, this one conclusion accords with experimental result to agree.

计算结果表明，六氨氯化镁中的6个氨在原子核和其它电子形成的平均势场中分裂，分为两级，第一级4个氨，第二级2个氨，当外界条件变化时，最有可能是脱去4个氨分子，升温后再脱去另外2个氨，这一结论符合实验结果一致。

To take two non-African cases, it can be argued that drought helped fuel the Maoist insurgency in Nepal and the original Taliban uprising in Afghanistan.

再举两个非洲之外的案例。有一种未成定论的说法认为，尼泊尔的毛主义分子叛乱和阿富汗的塔利班最初举行暴动都隐含着天灾色彩，干旱成为激发革命的催化剂。

Van't Hoff and Joseph-Achille Le Bel (1847-1930) had independently explained in 1874 how a molecule with a carbon atom bonded to four different groups has two mirror-image forms.

范托夫和贝勒于1874年分别独立地解释了与四个不同的基团结合的碳原子所组成的分子如何有两种互为镜像的形式。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。