PMID- 9518454 OWN - NLM STAT- MEDLINE DCOM- 19980526 LR - 20131121 IS - 1046-5928 (Print) IS - 1046-5928 (Linking) VI - 12 IP - 2 DP - 1998 Mar TI - Expression of human monocyte chemoattractant protein-1 in the yeast Pichia pastoris. PG - 145-50 AB - The human monocyte chemoattractant protein-1 (MCP-1) was expressed at high levels in Pichia pastoris with the alcohol oxidase promoter. It was secreted from the yeast when either its natural signal sequence or the Saccharomyces cerevisiae alpha-factor signal peptide was used. SDS-PAGE and Western blot revealed two immunoreactive MCP-1 species at 15 and 8.5 kDa designated MCP-1H and MCP-1L, respectively; both were purified by cation-exchange chromatography. MCP-1H could be converted to MCP-1L by treatment with peptide N-glycosidase F, showing that the former is an N-glycosylated form of the latter. Laser desorption mass spectrometry showed that MCP-1L actually consisted of a mixture of three polypeptides of 8449, 8614, and 8780 Da and MCP-1H showed a broad peak at 11,134 Da. N-terminal peptide sequencing indicated that nearly half of MCP-1L lacked the two N-terminal amino acids found in the native protein. Both MCP-1H and MCP-1L could induce monocyte migration and calcium influx in THP-1 monocytic leukemia cells, although these activities were about 10- to 100-fold lower than those of MCP-1 produced in insect cells. FAU - Beall, C J AU - Beall CJ AD - Neurobiotechnology Center, Ohio State University, Columbus, Ohio 43210, USA. FAU - Breckenridge, S M AU - Breckenridge SM FAU - Chakravarty, L AU - Chakravarty L FAU - Kolattukudy, P E AU - Kolattukudy PE LA - eng GR - HL 48916/HL/NHLBI NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Protein Expr Purif JT - Protein expression and purification JID - 9101496 RN - 0 (Chemokine CCL2) RN - 0 (Immune Sera) RN - 0 (Protein Sorting Signals) RN - 0 (Recombinant Proteins) RN - EC 3.5.- (Amidohydrolases) RN - EC 3.5.1.52 (Peptide-N4-(N-acetyl-beta-glucosaminyl) Asparagine Amidase) RN - SY7Q814VUP (Calcium) SB - IM MH - Amidohydrolases/metabolism MH - Amino Acid Sequence MH - Animals MH - Biological Assay MH - Blotting, Western MH - Calcium/metabolism MH - Chemokine CCL2/*biosynthesis/genetics/metabolism MH - Dose-Response Relationship, Drug MH - Electrophoresis, Polyacrylamide Gel MH - Gene Expression Regulation, Fungal MH - Glycosylation MH - Humans MH - Immune Sera/immunology MH - Peptide-N4-(N-acetyl-beta-glucosaminyl) Asparagine Amidase MH - Pichia/genetics/*metabolism MH - Protein Sorting Signals/chemistry/genetics MH - Rabbits MH - Recombinant Proteins/biosynthesis/genetics/metabolism MH - Tumor Cells, Cultured EDAT- 1998/03/31 00:00 MHDA- 1998/03/31 00:01 CRDT- 1998/03/31 00:00 PHST- 1998/03/31 00:00 [pubmed] PHST- 1998/03/31 00:01 [medline] PHST- 1998/03/31 00:00 [entrez] AID - S1046-5928(97)90820-2 [pii] AID - 10.1006/prep.1997.0820 [doi] PST - ppublish SO - Protein Expr Purif. 1998 Mar;12(2):145-50. doi: 10.1006/prep.1997.0820.