诺如病毒广州株全基因组序列测定及分析

目的 探讨广州地区儿童感染的诺如病毒基因组分子结构特点和基因组类型。方法 参考GenBank上的诺如病毒MD145-12基因组设计分段扩增引物，进行RT-PCR分段扩增诺如病毒基因组，克隆于T载体上，测定序列，用Clustal W／X、DNAStar、RAT（recombination analysis tool）等软件分析基因组序列。结果 诺如病毒NVgz01全基因组为7558bp，提交到C,enBank上的序列号为DQ369797，3’端非编码区末端长45bp，病毒基因组有3个开放阅读框（ORF），ORF1长5100bp（5～5104nt），ORF2基因长1623bp，位于基因组中5085～6707nt之间，ORF3基因长807bp（6707～7513nt），其中ORF1、ORF2两基因有19个核苷酸的重叠区；NVgz01全基因组核苷酸序列与GenBank上诺如GI组Norwalk68、Southampto、BS5、Chiba、WUG1的同源相似性在43％～44％之间，与GⅡ组MD145、Farmington　Hills、B4S5、Hawaii、Lordsdale、SaitamaU1、Mc37同源相似性在76％～90％之间。NVgz01的ORF1与Mc37核苷酸序列同源性为94％，但ORF2与Mc37的同源性只有65％；NVgz01的ORF2与Fannillgton Hills（AY502023）同源性为最高（94％），ORF1的同源性为88％。结论广州地区儿童腹泻感染的诺如病毒NVgz01株全基因组序列为7558bp，GenBank序列号为DQ369797，NVgz01与诺如病毒的GⅡ组同源性较高，确认NVgz01株属于诺如病毒GⅡ组；根据ORF1、ORF2的同源性差异和RAT程序分析初步认为NVgz01可能是重组病毒。     

人偏肺病毒广州分离株全基因组序列测定及分析

目的 探讨广州地区儿童感染的偏肺病毒基因组分子结构特点和基因型类型.方法 参考GenBank上的偏肺病毒00-1株(AF371337)基因组设计分段扩增引物,进行RT-PCR分段扩增偏肺病毒基因组,克隆于T载体上,序列测定,用Clustal W/X、DNASTAR、MEGA4.1等软件分析基因组序列.结果 偏肺病毒hMPVgz01全基因组为13 327 bp,提交到GenBank上的序列号为GQ153651,有8个开放阅读框(open reading frames,ORFs),基因组结构为:3-N-P-M-F-M2-SH-G-L-5;将hMPVgz01株全基因组核苷酸序列与GenBank上的偏肺病毒全基因组序列进行Clustal W比较,发现与偏肺病毒的A组相似性较高,为92%～97%,与A2b组的BJ1887相似性为最高,而与B组相似性为81%,与C组的禽偏肺病毒为71%.将hMPVgz01株的N、F、G基因与偏肺病毒的A1、A2、B1、B2的相对应基因进行相似性比较,同样也是与A2b型的相似性为最高,因此确认广州地区的hMPVgz01株为A2b型.结论 广州地区儿童感染的偏肺病毒hMPVgz01株全基因组序列为13 327 bp,GenBank 序列号为GQ153651,hMPVgz01与偏肺病毒的A2b型相似性最高,确认hMPVgz01株属于偏肺病毒A2b型.     

The complete genomic sequence analysis of genotype 4 human astrovirus HASTVgz01 strain in Guangzhou

To analyze the genomic molecular structure and genotype of human astrovirus isolated from infant in Guangzhou of China, the primers were designed based on the genomic sequence of astrovirus from the GenBank and the target sequence were amplified by RT-PCR. Then the PCR-products were cloned to T vector and sequenced. The genomic nucleotide sequences were analyzed by the programs CLUSTAL W and DNASTAR. It was found that the full genomic length of HASTVgz01 strain was 6721 bp and the ORFs were 6558 bp. The 5' and 3' UTR were 82 and 81 nucleotides. The genome included 3 open reading frames (ORFs): ORF1a, ORF1b and ORF2. The 5'-terminal ORF1a started at nucleotide 83 and extended to nucleotide 2845. ORFlb (nt 2785 to nt 4332) overlaped ORFla by 61 nucleotides. The 3'-terminal ORF2 began at nucleotide 4325 and terminated at nucleotide 6640. ORF2 had 2316 nucleotides. Compared with other astrovirus sequences in GenBank, the homology of the amino acid sequence of ORF2 of HASTVgz01 strain with that of serotype 4 was 93% . Homology with other serotypes ranged from 61% to 70% . The complete nucleotide sequence of astrovirus HASTVgz01 strain isolated from Guangzhou in China was 6721 bp in length, GenBank accession NO. DQ344027. Comparing the ORF2 of astrovirus HASTVgz01 with the known sequences of types 1-8 the highest homology was serotype 4 (93%). Comparative sequence analysis of the HASTVgz01 ORF2 with the reported human astrovirus sequences revealed that the isolated astrovirus belongs to genotype (serotype) 4.     

人副流感病毒广州分离株ZYMgz01全基因组序列测定及分析

目的探讨广州地区副流感病毒的基因组结构和基因型。方法参照GenBank副流感病毒（U51116）全基因组序列设计11对引物,覆盖副流感病毒基因组的全长。以副流感病毒cDNA为模板分段扩增病毒基因组的全长,各片段克隆到T载体上,并进行序列测定和分析。结果人副流感病毒ZYMgz01株全基因组核酸序列为15462bp,提交到GenBank的序列号为EU326526,与3型副流感病毒保守基因同源性为94.0%,具有3型副流感病毒的结构特征。基因组序列同源性比较结果显示,ZHYMgz01株病毒与兰州的LZ22（FJ455842）病毒株的同源性最高,为99.1%;与美国突变病毒株（U51116）同源性为95.1%;与美国病毒株（Z11575）同源性为95.2%;与日本（ABO12132）病毒株的同源性为94.8%,而与加拿大（EU424062）病毒株的同源性为94.8%。系统进化树显示ZHYMgz01病毒株与兰州的LZ22病毒株同属一个进化分支。结论广州地区儿童呼吸道感染的副流感病毒ZHYMgz01全基因组为15462bp,与3型副流感病毒的同源性最高,确定ZHYMgz01是3型副流感病毒。3型副流感病毒系统进化可能与地域差异有一定的关系。     

广州检出星状病毒4型的全基因组序列测定及分析

目的 探讨广州地区儿童感染的星状病毒基因组分子结构特点和基因型.方法 参考GenBank上的星状病毒基因组设计分段扩增引物,进行RT-PCR分段扩增星状病毒基因组,克隆于T载体上,序列测定,用Clustal W和DNAStar软件分析基因组序列.结果 星状病毒HASTVgz01全基因组为6721 bp,提交到GenBank上的序列号为DQ344027,其中5＇端非编码区（5＇UTR）长82bp,3＇端非编码区末端长81 bp,病毒基因组编码区全长6558个核苷酸,分别编码ORF1a、ORF1b、ORF2,ORF1a基因长2763 bp（83～2845 nt）,ORF1b基因长1557bp（2785～4332 nt）,其中ORF1a、ORF1b两基因有71个核苷酸的重叠区;ORF2全长2316 nt,位于基因组中4325～6640 nt.ASTVgz01与GenBank中8种基因型星状病毒的ORF2基因氨基酸序列同源性比较发现,HASTVgz01与4型的同源性为93%,其他的同源性在61%～70%之间.结论 广州地区儿童腹泻感染的星状病毒HASTVgz01全基因组为6721bp,GenBank序列号为DQ344027,HASTVgz01与4型星状病毒的ORF2基因氨基酸序列比较同源性为最高,确认HASTVgz01是4型星状病毒.     

诺如病毒广州株GZ20133135全基因组序列测定及分析

目的 分析GⅡ-4型诺如病毒广州株GZ20133135全基因组序列,了解其分子结构特点及基因组类型.方法 根据Sydney2012参考株全序列设计引物,用RT-PCR分段扩增诺如病毒全基因组,经分子克隆、测序后进行系统进化分析.结果 GⅡ-4型NoVs广州株GZ20133135病毒基因组全长7566 bp,病毒基因组分三个开放阅读框（ORFs）,ORF1、ORF2及ORF3长度分别为5100 bp、1623 bp和807 bp,ORF1与ORF2之间有19个核苷酸重叠.广州株GZ20133135基因组核苷酸序列与参考株GⅡ-4型Sydney2012变异株同源性最高,全长同源性为99.07％.根据系统进化分析,广州株GZ20133135株属于GⅡ-4 Sydney2012变异株.通过对衣壳区氨基酸比对,Sydney2012变异株位点变化情况为：aa294V或A或P→T,aa296S或T→S,aa297H或Q→R,aa298D或N或T→N,aa368T或N或S或A→E,aa372 N或S→D,aa393 N或D或S,aa394 T或G或S→T,aa395T或A→T,aa407 N或D→S,aa412T或D→N,aa413G或I→T.结论 诺如病毒广州株GZ20133135与参考株Sydney2012NSW0514同源性最高,属于GⅡ-4Sydney2012变异株.全长序列可应用于流行病学诊断、疫苗开发、预测新变异株的出现及诺如病毒流行株进化研究.     

1型星状病毒上海分离株基因组序列测定及分析

目的 了解上海地区腹泻患儿感染的星状病毒基因组分子结构特点和基因型.方法 用RT-PCR方法分段扩增星状病毒基因组,克隆于pMD18-T载体上,测定序列并拼接,用MEGA、DNAStar软件对所得序列进行分析.结果 本次分离株基因组全长6807 bp,命名为HAstV-SH,提交到GenBank上的序列号为FJ375759,有3个开放阅读框架,非结构基因ORF1a、ORF1b共长4290 bp,位于基因组83～4372 nt之间;编码结构蛋白的ORF2基因全长2364 bp,位于基因组4764～6727 nt之间.与GenBank中星状病毒ORF2基因组序列同源性比较发现,HAstV-SH与1型星状病毒核苷酸同源性最高(97%),与其他基因型的同源性为63%～70%.结论 上海地区儿童感染的星状病毒HAstV-SH属于1型星状病毒,与日本分离株AB009985亲缘关系较近,氨基酸同源性为97.5%.     

The complete genomic sequence of a BLV strain from a Holstein cow from Argentina

DNA was extracted from the peripheral blood of a seropositive, PCR-positive, BLV-infected Holstein cow (No. 38) from Argentina. The DNA was amplified via PCR with a series of overlapping primers encompassing the entire BLV proviral DNA. The amplified BLV ARG 38 DNA was cloned, sequenced, and compared phylogenetically to three other full-length BLV sequences. Characterization of its deduced proteins and its relationship to other members of the PTLV/BLV genus of retroviruses are discussed.     

The complete genomic sequence of HLA-DRB1*10:01:01 was identified by sequencing in a Han Chinese individual

HLA-G*01:03:01:02 and G*01:03:01:01 differ by a two nucleotide changes in intron 3.     

The complete genomic sequence of a novel mycovirus from Rhizoctonia solani AG-1 IA strain B275

The complete genome of a novel mycovirus, Rhizoctonia solani dsRNA virus 1 (RsRV1) was sequenced and analyzed. It is composed of two dsRNA genome segments, 2379 bp and 1811 bp in length, which were referred to as RsRV1-1 and RsRV1-2, respectively. RsRV1-1 contains a single open reading frame (ORF1), which has a conserved RNA-dependent RNA polymerase (RdRp) domain, whereas RsRV1-2 contains a single ORF2, which might encode a multifunctional protein. The genome organization of RsRV1 is similar to that of members of the family Partitiviridae. However, phylogenetic analysis indicated that RsRV1 formed a distinct clade together with three other unclassified viruses, suggesting that RsRV1 may belong to a new family of dsRNA mycoviruses. This is the first report of the full-length nucleotide sequence of a novel dsRNA mycovirus, RsRV1, infecting R. solani AG-1 IA strain B275, the causal agent of rice sheath blight.     

The complete sequence of the genomic RNAs of spinach latent virus

Summary.  We describe the sequence for the complete genome of spinach latent virus (SpLV). Comparisons of this genome with that of the only other complete genome described for a species within the genus Ilarvirus (citrus leaf rugose virus – CiLRV) indicate that while there are marked differences between the RNA 3 of the two viruses, their respective RNAs 1 and 2 share many similarities. However, the putative 2a protein of SpLV contains a C₂H₂ type “zinc finger”-like motif located towards the carboxy terminal of the protein which is absent in CiLRV and has not been reported for other members of the family Bromoviridae. A second open reading frame (2b), located at a similar position to that described for the cucumoviruses, occurs in the RNA 2 of both SpLV and CiLRV. The putative coat protein of SpLV is similar to that of citrus variegation virus (CVV) and asparagus virus 2 (AV-2), both members of subgroup 2 of the ilarviruses. We have subsequently demonstrated a serological relationship between SpLV and other viruses in subgroup 2 and suggest that SpLV should be included in this subgroup rather than remain in a separate group (subgroup 6). However, while the putative movement protein of SpLV is remarkably similar to that of AV-2, it shows little relationship with the corresponding protein of CVV and the lack of similarity suggests that a recombination event may have occurred in the past. The relationship between the genera Alfamovirus and Ilarvirus is discussed in the light of the data for the genome of SpLV and recently published information for other members of the genus Ilarvirus. Received October 21, 1996 Accepted December 3, 1996     

The genomic sequence of a contemporary wild-type mumps virus strain

Vaccination has the potential to eradicate mumps, and 82 countries now include a live attenuated mumps vaccine as part of their childhood vaccination programme. Although, monotypic, genetic variants of mumps virus (MuV) have been described based on comparison of the SH gene sequences, and at least seven genotypes have been identified. We now report the entire sequence of a recently isolated wild type MuV strain, Glouc1/UK96 (Glouc1) by direct sequencing of the cDNA obtained from cell culture fluid. The genome of this recent isolate was 15 384 nucleotides in length. There were 579 nucleotide differences (3.8%) and 71 amino acid differences (1.5%) between Glouc1, a genotype G strain and Ur-AM9, a genotype B strain. Other MuV strains with available sequences were also compared with this pathological strain. The sequence of the contemporary strain reported here provides a picture of the variability of MuV over its entire genome (GenBank accession no. AF280799).     

The complete genome sequence of a European goose reovirus strain

The complete genomic sequence of a Hungarian goose orthoreovirus strain (D20/99) is reported in this study. The genome of D20/99 is 22,969 bp in length (range, 3958 bp for L1 to 1124 bp for S4) and encodes 11 putative proteins. Pairwise sequence comparisons and phylogenetic analyses indicated that D20/99 shares genetic signatures with some contemporary Chinese duck and goose reovirus strains, except for the μA, μNS and σA protein coding genes, which represented independent genetic lineages. This study implies a greater genetic diversity among waterfowl-origin orthoreoviruses than hitherto recognized.     

Molecular cloning and complete nucleotide sequence of genomic RNA of the AIK-C strain of attenuated measles virus

Twelve cDNA clones covering the entire genome of the AIK-C strain of a seed for live measles vaccine were obtained, and the nucleotide sequences were determined. The full viral genomic RNA consists of 15,894 nucleotides. Comparisons of the nucleotide sequence and the deduced amino acid sequence between the AIK-C and other Edmonston strains revealed the following changes: 56 nucleotide differences and one C residue insertion, 31 amino acid changes, and 19 silent mutations.     

Full genomic analysis of human rotavirus strain TB-Chen isolated in China

A G2P[4]/NSP4[A] rotavirus strain TB-Chen was isolated from a 2-year-old patient hospitalized with acute gastroenteritis in Kunming, China. The strain TB-Chen was demonstrated having group A-specific antigenicity, a “short” (subgroup II) electropherotype. To investigate its overall genomic relatedness and to determine which group it belonged, the complete genome of strain TB-Chen was determined. Genomic comparison based on amino acid sequence identity and phylogenetic analysis revealed that all 11 gene segments of strain TB-Chen were highly identical (> 91.80%) with the representative G2P[4]/NSP4[A] human strains DS-1, S2, NR1 and IS2, suggesting that this rotavirus strain was derived from human host. Besides, almost all the available representative rotavirus gene segments among group A were analyzed and identified within 15 G-types, 28 P-types, and 6 NSP4 genotypes. This is the first report of group A rotavirus genomic analyses in China and the findings have important implications for rotavirus vaccine development.     

The complete genomic sequence of a second novel partitivirus infecting Ustilaginoidea virens

The bisegmented genome of a putative double-stranded (ds) RNA virus from Ustilaginoidea virens was sequenced and analyzed. The larger genomic segment of 2112 bp encodes a putative RNA-dependent RNA polymerase (RdRp, 628 aa), and the smaller one of 2082 bp encodes a putative coat protein (CP) of 539 aa. The 5′ untranslated regions (UTR) of the two segments share regions of high sequence homology. Phylogenetic analysis indicates that this novel partitivirus, named Ustilaginoidea virens partitivirus 2 (UvPV2), can be assigned to the family Partitiviridae.     

The complete nucleotide sequence of turnip mosaic virus RNA Japanese strain

Summary The complete nucleotide sequence of the RNA genome of turnip mosaic virus Japanese strain (TuMV-J) has been determined from five overlapping cDNA clones and by direct sequencing of viral RNA. The RNA sequence was 9833 nucleotides in length, excluding a 3 terminal poly(A) tail. An AUG triplet at position 130–132 was assigned as the initiation codon for the translation of the genome size viral polyprotein which would consist of 3164 amino acid residues. Interestingly, a different amino acid sequence (continuous twenty amino acids) within the cytoplasmic inclusion protein between TuMV-J and Canadian strain of TuMV was observed, caused by an insertion and a deletion of nucleotides.DDBJ/EMBL/GenBank accession number D83184.