OBJECTIVETo investigate the molecular genetics basis for a novel HLA allele, HLA-B*5614, in Chinese population.

METHODSDNA was extracted from whole blood by salting-out method. The HLA-B exons 2-4 of the proband was amplified and the amplified product was cloned using TOPO cloning sequencing kit to split the two alleles apart. Both strands of exons 2,3 and 4 of chosen colonies were sequencing. The PCR-SSP was performed to confirm the mutations detected by sequencing.

RESULTSThe sequencing results showed the HLA-B alleles of the proband as B*1502 and the novel allele. The sequences of the novel allele have been submitted to GenBank (AY601726, AY610727, AY610728). After BLAST analysis, the novel allele differs from B*5608 by a single nucleotide at position 277G-->C in exon 2. This results in an amino acid change from Gly to Arg at codon 93.

CONCLUSIONThis allele is a novel allele and has been officially named B*5614 by the WHO Nomenclature Committee.

Alleles ; Exons ; genetics ; HLA-B Antigens ; genetics ; Humans ; Male ; Molecular Sequence Data ; Polymerase Chain Reaction ; Polymorphism, Single Nucleotide ; Sequence Analysis, DNA ; methods

To analyze killer immunoglobulin (Ig)-like receptor (KIR) gene content and allelic polymorphism in Zhejiang Han population, samples were genotyped by polymerase chain reaction sequence-specific primers (PCR-SSP). The results demonstrated that all 17 KIR genes could be observed in the population. All individuals contained 2DL4, 3DL2 and 3DL3 genes. The frequencies of these genes was 1.00. 2DL1, 2DL3, 2DP1, 3DP1*003, 3DL1, 2DS4*001/002 loci were more common, their frequencies were 0.902, 0.902, 0.902, 0.902, 0.7598, 0.5615 respectively, while the frequencies of 2DL2, 2DL5A, 2DL5B, 2DS1, 2DS2, 2DS3, 2DS4*003, 2DS5, 3DS1 and 3DP1*001/002 were relatively lower. The A KIR haplotype was the most prevalent (74.7%) in Zhejiang Han population and there were 12 different KIR haplotypes in total, the most common was 2 (53.0%). Twenty six different genotypes have been found in the population, AJ (2, 2) and AF (1, 2) showed higher frequencies, followed by AH (2, 5), NN2 (2, 6), AI (1, 5) and AG (1, 1). Fifteen of these genotypes have not been found in Caucasians so far and four new KIR profiles could not be assigned to the haplotypes according to standard assign method. In conclusion, there are distinctive frequencies of KIR gene content, haplotype as well as genotype in Zhejiang Han population.
China ; Gene Frequency ; Genotype ; Haplotypes ; Humans ; Polymerase Chain Reaction ; methods ; Polymorphism, Genetic ; Receptors, KIR ; genetics

The purpose of this study was to establish beta block matching technique. DNA was extracted from whole blood by salting-out method, beta block matching was performed by PCR and GeneScan technique. The results showed that the length of fragments amplificated in 100 samples was different and the range of them was 91-197 bp. Amplification fragments could be divided into four regions: 91-93, 105-113, 125-139 and 177-197 bp respectively. 91 bp DNA fragments could be found in all of samples. The numbers of DNA fragments with different length have been shown high polymorphism and they focused on the range of seven to twenty four. In conclusion, the beta block matching technique is reliable and applicable to the selection of hematopoietic stem cell transplantation donors.
DNA ; genetics ; HLA-B Antigens ; genetics ; HLA-C Antigens ; genetics ; HLA-DR Antigens ; genetics ; HLA-DRB1 Chains ; Hematopoietic Stem Cell Transplantation ; Histocompatibility Testing ; methods ; Humans ; Polymerase Chain Reaction ; methods

OBJECTIVE: To establish a multiplex STR genotyping method for autosomal STR and Y-STR loci in forensic biological practice. METHODS: Widely used autosomal STR loci and Y-STR loci were selected. A set of PCR primers was designed, and a 5-dye fluorescent labeled STR multiplex PCR reagent kit was developed. RESULTS: A kit was developed which can simultaneously detect 15 autosomal STR loci, 10 Y-STR loci, and an Amelogenin. CONCLUSION The 15 autosomal STR plus 10 Y-STR kit in combination with capillary electrophoresis method was used to STR genotyping with accurate and reliable results. The new one-step testing kit can potentially be widely used in forensic cases and DNA databank in the future.
Amelogenin ; Chromosomes, Human, Y/genetics* ; DNA Primers ; Databases, Nucleic Acid ; Forensic Genetics/methods* ; Genotype ; Genotyping Techniques/instrumentation* ; Humans ; Indicators and Reagents ; Microsatellite Repeats ; Multiplex Polymerase Chain Reaction

The aim of this study was aimed to investigate the molecular genetic basis for a novel HLA allele, HLA-B*4061, in Chinese population. DNA was extracted from whole blood by salting-out method. The HLA-B exons 1 - 8 of the proband was amplified and the amplified product was cloned using TOPO TA cloning sequencing kit to split the two alleles apart. Both strands of exons 2, 3 and 4 of chosen colonies were sequencing. The PCR-SSP was performed to confirm the mutations detected by sequencing. The sequencing results showed HLA-B alleles of the proband as B*4601 and the novel allele. The sequences of the novel allele have been submitted to GenBank (DQ089628, DQ089629, DQ089630). After HLA blast analysis, the novel allele showed a single nucleotide mismatch with B*400101 in exon 2 at position 272 C-->A, as the results, changing amino acid from Ser to Tyr at codon 67. It is concluded that this allele is a novel one and has been officially named B*4061 by the WHO Nomenclature Committee.
Alleles ; Amino Acid Substitution ; Asian Continental Ancestry Group ; genetics ; Base Sequence ; China ; HLA-B Antigens ; genetics ; immunology ; Histocompatibility Testing ; Humans ; Molecular Sequence Data ; Sequence Analysis, DNA ; Sequence Homology, Nucleic Acid

OBJECTIVETo investigate the molecular genetics basis for HLA novel allele HLA-DRB1*1212 in Chinese population.

METHODSGenomic DNA was extracted from whole blood by salting-out method. HLA-DRB1 gene exon 2 was amplified by PCR with group-specific primers from genomic DNA. PCR products were cut back from agarose gels and purified to sequence directly. The polymerase chain reaction-sequence specific oligonucleotide probes (PCR-SSO) was performed to confirm the mutations which were detected by sequencing in this study.

RESULTSThe sequencing results showed HLA-DRB1 alleles of the proband as DRB1*090102 and the novel allele. The sequences of the novel allele have been submitted to GenBank (AY899825). Through BLAST analysis, the novel allele was found to be different from DRB1*120101 at position 199A-->C in exon 2, that results in an amino acid change from Ile to Leu at codon 67.

CONCLUSIONThis allele is a novel and has been officially named as DRB1*1212 by the WHO Nomenclature Committee.

Alleles ; Asian Continental Ancestry Group ; genetics ; Base Sequence ; China ; ethnology ; DNA ; analysis ; Ethnic Groups ; Female ; HLA-DR Antigens ; genetics ; HLA-DRB1 Chains ; Humans ; Male ; Molecular Sequence Data ; Polymerase Chain Reaction ; Sequence Analysis

To establish delta block HLA-matching technique, DNA was extracted from whole blood by salting-out method, delta block was amplified by polymerase chain reaction (PCR), and PCR product was detected by GeneScan. The results showed that delta block had polymorphism in 104 samples without sibship of the Han people from Zhejiang province. The range of DNA fragment length was 81-393 bp and could be divided into 4 groups: 81-118 bp, 140-175 bp, 217-301 bp, 340-393 bp. The numbers of DNA fragments were 6-32. It is concluded that the method of delta block matching is reliable and can be applied to select donors for the patients to be transplanted. It is the first time to get delta block data of the Han people in China.
HLA-A Antigens ; genetics ; immunology ; HLA-B Antigens ; genetics ; immunology ; HLA-DQ Antigens ; genetics ; immunology ; HLA-DR Antigens ; genetics ; immunology ; HLA-DRB1 Chains ; Hematopoietic Stem Cell Transplantation ; Histocompatibility Testing ; methods ; Humans

Based on the principle of the pathway engineering, a novel pathway of producing glycerol was built in E. coli. The gpd1 gene encoding glycerol 3-phosphate dehydrogenase and the hor2 gene encoding glycerol 3-phosphatase were cloned from Saccharomyces cerevisiae, respectively. The two genes were inserted into expression vector pSE380 together. A recombinant plasmid pSE-gpd1-hor2 containing polycistron was constructed under the control of the strong trc promoter. Then it was transformed into E. coli BL21. The result showed the recombinant microorganism GxB-gh could convert glucose to glycerol directly. And the recombinant microorganism GxB-gh was incubated to produce glycerol from D-glucose in the fermentor. The maximal concentration of glycerol was 46.67g/L at 26h. Conversion rate of glucose was 42.87%. The study is about "green" producing glycerol by recombinant microorganism and is also useful for further working in recombining microorganism of producing 1,3-propanediol.
Cloning, Molecular ; Escherichia coli ; genetics ; metabolism ; Fermentation ; Fungal Proteins ; biosynthesis ; genetics ; Genetic Engineering ; Glycerol ; metabolism ; Glycerolphosphate Dehydrogenase ; biosynthesis ; genetics ; Phosphoric Monoester Hydrolases ; biosynthesis ; genetics ; Saccharomyces cerevisiae ; enzymology ; genetics

Toxoplasma gondii is a worldwide distribution of Apicom-plexans,which are widely parasitic in human and warm-blooded animals.Due to the factors such as host and geographical distribution,the population structure has rich genetic diversity.At present,the study of the genotype of Toxoplasma gondii and summary papers are relatively few.This paper reviews the biological information that has been reported in the world regarding the toxoplasmosis of birds such as domesticated chickens,ornamental birds,pet birds and wild rare birds,and to provide basis for further research on biological information such as epidemiology of bird toxoplasmosis and population structure of insects.