HUMAN C5A ANAPHYLATOXIN - GENE CLONING AND EXPRESSION IN ESCHERICHIA-COLI

被引：22

作者：

BAUTSCH, W ^{[1
]}

EMDE, M ^{[1
]}

KRETZSCHMAR, T ^{[1
]}

KOHL, J ^{[1
]}

SUCKAU, D ^{[1
]}

BITTERSUERMANN, D ^{[1
]}

机构：

[1] UNIV CONSTANCE, FAK CHEM, W-7750 CONSTANCE, GERMANY

来源：

IMMUNOBIOLOGY | 1992年 / 185卷 / 01期

关键词：

adult respiratory distress syndrome; ARA; ARDS; ATP release assay; fast performance liquid chromatography; FPLC; IPTG; isopropyl-β-D-thiogalactopyranoside; mAb; monoclonal antibody; MPO; myeloperoxidase release assay; PCR; PMNL; polymerase chain reaction; polymorphonuclear cells; recombinant human C5a; rhC5a;

D O I：

10.1016/S0171-2985(11)80316-5

中图分类号：

R392 [医学免疫学]; Q939.91 [免疫学];

学科分类号：

100102 ;

摘要：

A gene coding for the human anaphylatoxin C5a was cloned and expressed in Escherichia coli. A combination of reverse transcription of mRNA of the U937 cell line with subsequent preparative polymerase chain reaction was employed to obtain the gene. The sequence was cloned into the plasmid vector pKK233-2 behind an ATG initiation codon under the control of a trc promotor. After purification by ion exchange chromatography and reversed phase beta-FPLC a mixture of predominantly non-glycosylated recombinant human C5a with a mercaptoethanol adduct at cysteine 27 and the N-methionyl derivative was obtained which was homogeneous on silver-stained gels, immunoreactive with C5a-specific monoclonal antibodies and functionally active in releasing myeloperoxidase from human granulocytes and ATP from guinea pig platelets. The final yield was about 0.4-0.8 mg purified recombinant C5a per liter bacterial culture.

引用

页码：41 / 52

页数：12

共 46 条

[1] ATG VECTORS FOR REGULATED HIGH-LEVEL EXPRESSION OF CLONED GENES IN ESCHERICHIA-COLI [J].