A leucine zipper pattern is located in the membrane proximal extracellular domain ( mped ) of bt - r3 protein . this is a very important character of cadherin 另外，它还有1个亮氨酸拉链序列，位于胞外的近膜区( mpr ) ，这是钙粘蛋白的重要特征之一。
Concentration change of catecholamine and leucine - enkephalin in sheep cerebrospinal fluid after apa microencapsulated bovine chromaffin cells transplantation to the spinal subarachnoid space 微囊化牛嗜铬细胞脑脊液亮氨酸脑啡肽和儿茶酚胺含量的变化
In cultured neonatal rat cardiac myocytes , mtt methods , total protein measurement and 3h - leucine incorporation were used to evaluate the cell number and protein synthesis of cardiac myocytes 脯氨酸掺入实验测定胶原合成速率，放免法测定细胞内cgmp和。 amp ，定量pcr技术研究vnp对cfs的npr c的调控。
6 . we examined the mode and tempo of evolution of cyt b in oedipodidae . for these grasshoppers , the most common amino acids and codons are leucine ( tta ) , isoleucine ( att ) and phenylalanine ( ttt ) 运用cytb基囚的核’苦酸序列对斑翅蝗科昆虫进行系统研穴时，各属种问的分类关系都比较明确，得到的树的拓扑结构大都一致。
Not all adaptive immune systems use the immunoglobulin fold as the basis for specific recognition molecules : sea lampreys , for example , have evolved an adaptive immune system that is based on leucine - rich repeat proteins 并不是所有的获得性免疫系统都是利用免疫球蛋白来特异的识别外来分子，例如七鳃鳗，它利用的是一种富亮氨酸的蛋白。
The substance with antibacteria action obtained from forest frog is made up of alanine , aminoacetic acid , leucine , isoleucine , proline , aminoglutaric acid , threonine , serine , lysine . the substance with antibacteria action is a kind of poly peptide with a micromolecul 纯化的林蛙皮肤抗菌活性物质经尿素? sds ? page电泳分析，表现为一条带，分子量约为6 . 28kda 。
Trka , the high affinity ngf receptor , contains an intracellular domain with tyrosine kinase activity and an extracellular domain with three tandem leucine - rich motifs flanked by two cysteine clusters in their amino termini and two immunoglobulin - like domains in the more membrane - proximal region 膜外域含有8个亮氨酸的重复区域，其前后分别串联着一组半胱氨酸残基，紧挨细胞膜的是两个c2 -型免疫球蛋白样区ig和ig ；膜内域为酪氨酸激酶催化活性区。
Nogo - 66 receptor , ngr , cloned in 2001 , is a leucine - rich - repeat glycophosphatidylinositol - anchored membrane protein which mediates nogo - 66 inhibition of axonal outgrowth . both the long acidic amino - terminal domain and the nogo - 66 fragment have strong neurite growth inhibitory activity suggest that nogo - a has at least two inhibitory domains . northern blot , in situ hybridization , western blot and immunocytochemistry analyses show that in addition to oligodendrocytes , nogo - a mrna and nogo - a protein are also expressed in neurons in developing and adult brain and spinal cord , nogo - a is also found in peripheral organs such as heart and testis Northernblot 、原位杂交、 westernblot和免疫组化结果证明： nogo amrna和nogo蛋白除了在cns的寡突胶质细胞中表达，还表达于发育阶段和成年的脑、脊髓和外周神经节的某些神经元中，在外周组织如睾丸和心脏也有表达； nogoe在cns和pns以及多种外周组织中有广泛分布； nogo （除表达于脑和心脏外，在骨骼肌中有较高表达。
Pp38 was found to have immunosuppressive effect on chicken in vivo and the copy number of 132 - bpr was found to be associated with the attenuation of the virus in vitro , meq was believed to be a potential oncogene , based on its leucine zipper structure and proline - rich domain characteristic of jun / fos family of transcription factors , and may plays an important role in the pathogenicity or oncogenicity of mdv 其中， meq与132 - bpr两个基因是mdv - 1所特有，已证实132 - bpr的拷贝数与毒株的体外致弱程度有关， pp38则被证实可抑制机体的免疫应答。 meq基因由于具有与致瘤基因jun fos家族类似的分子结构，因此，我们有理由认为meq基因在mdv致病、致瘤中可能发挥重要的作用。
Initially , a polyclonal antibodies was used to screen the cdna expression library to isolate pf40 gene from millet . sequence analysis revealed that the pf40 gene contained an open reading frame ( orf ) encoding a protein with 75 % - 35 % sequence identity to the zips ( zinc or iron transporter proteins ) gene family . software analysis of the pf40 gene character showed that pf40 protein had a eight trans - membrane region structure , pf40 protein was also rich in leucine ( 18 . 4 % ) and the protein was a hydrophobic protein 序列分析表明该基因具有一个开放阅读框( openreadingframe , orf ) : genbank中查询该基因编码的蛋白与zips ( zincorirontransporterproteins ，离子通道蛋白)基因家族的蛋白有75 - 35的相似性；软件的分析结果显示该基因编码的蛋白为一个有8个跨膜区的跨膜蛋白； pf40蛋白为疏水蛋白，以上的特征也许是pf40基因发挥作用的基础。
