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Winiarska B, Dwornik A, Dębski J, Grzelak K, Bystranowska D, Zalewska M, Dadlez M, Ożyhar A, Kochman M. N-linked glycosylation of G. mellonella juvenile hormone binding protein - comparison of recombinant mutants expressed in P. pastoris cells with native protein. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2011; 1814:610-21. [PMID: 21315851 DOI: 10.1016/j.bbapap.2011.02.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2010] [Revised: 01/28/2011] [Accepted: 02/01/2011] [Indexed: 11/29/2022]
Abstract
Juvenile hormone (JH) regulates insect growth and development. JH present in the hemolymph is bound to juvenile hormone binding protein (hJHBP) which protects JH from degradation. In G. mellonella, this protein is glycosylated only at one (Asn(94)) of the two potential N-linked glycosylation sites (Asn(4) and Asn(94)). To investigate the function of glycosylation, each of the two potential glycosylation sites in the rJHBP molecule was examined by site-directed mutagenesis. MS analysis revealed that rJHBP overexpressed in the P. pastoris system may appear in a non-glycosylated as well as in a glycosylated form at both sites. We found that mutation at position Asn(94) reduces the level of protein secretion whereas mutation at the Asn(4) site has no effect on protein secretion. Purified rJHBP and its mutated forms (N4W and N94A) have the same JH binding activities similar to that of hJHBP. However, both mutants devoid of the carbohydrate chain are more susceptible to thermal inactivation. It is concluded that glycosylation of JHBP molecule is important for its thermal stability and secretion although it is not required for JH binding activity.
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Affiliation(s)
- Beata Winiarska
- Department of Biochemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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Tawfik AI, Kellner R, Hoffmann KH, Lorenz MW. Purification, characterisation and titre of the haemolymph juvenile hormone binding proteins from Schistocerca gregaria and Gryllus bimaculatus. JOURNAL OF INSECT PHYSIOLOGY 2006; 52:255-68. [PMID: 16384579 DOI: 10.1016/j.jinsphys.2005.11.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2005] [Revised: 11/14/2005] [Accepted: 11/14/2005] [Indexed: 05/05/2023]
Abstract
Juvenile hormone binding proteins (JHBPs) were extracted from the haemolymph of adult desert locusts, Schistocerca gregaria, and Mediterranean field crickets, Gryllus bimaculatus. The JHBPs were purified by polyethyleneglycol precipitation, filtration through molecular weight cut off filters and chromatography on a HiTrap heparin column. The juvenile hormone (JH) binding activity of the extracts was measured using a hydroxyapatite assay and the purification progress was monitored by native gel chromatography and sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). The haemolymph JHBPs of both insects are hexamers composed of seemingly identical subunits. The JHBP of the locust has a native Mr of 480 kDa with subunits of 77 kDa, whereas the JHBP of the cricket has a Mr of 510 kDa with subunits of 81 kDa. The locust JHBP binds JH III with moderate affinity (KD = 19 nM). Competition for binding of JH II and JH I was about 2 and 5 times less, respectively. The cricket JHBP also has a moderate affinity for JH III (KD = 28 nM), but surprisingly, competition for binding of JH II was equal to that of JH III and JH I competed about 3 times higher. No sequence information was obtained for the locust JHBP, but the N-terminal sequence of the cricket JHBP shows ca. 56% sequence homology with a hexamerin from Calliphora vicina. Antisera raised against the purified JHBPs were used to measure age- and sex-dependent changes in haemolymph JHBP titres and to confirm that the JHBPs of both species are immunologically different.
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Affiliation(s)
- Amer I Tawfik
- Department of Zoology/Entomology, Faculty of Science, Assiut University, Assiut 71516, Egypt
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Rodriguez Parkitna JM, Ozyhar A, Wiśniewski JR, Kochman M. Cloning and sequence analysis of Galleria mellonella juvenile hormone binding protein--a search for ancestors and relatives. Biol Chem 2002; 383:1343-55. [PMID: 12437127 DOI: 10.1515/bc.2002.153] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Juvenile hormone binding proteins (JHBPs) serve as specific carriers of juvenile hormone (JH) in insect hemolymph. As shown in this report, Galleria mellonella JHBP is encoded by a cDNA of 1063 nucleotides. The pre-protein consists of 245 amino acids with a 20 amino acid leader sequence. The concentration of the JHBP mRNA reaches a maximum on the third day of the last larval instar, and decreases five-fold towards pupation. Comparison of amino acid sequences of JHBPs from Bombyx mori, Heliothis virescens, Manduca sexta and G. mellonella shows that 57 positions out of 226 are occupied by identical amino acids. A phylogeny tree was constructed from 32 proteins, which function could be associated to JH. It has three major branches: (i) ligand binding domains of nuclear receptors, (ii) JHBPs and JH esterases (JHEs), and (iii) hypothetical proteins found in Drosophila melanogaster genome. Despite the close positioning of JHEs and JHBPs on the tree, which probably arises from the presence of a common JH binding motif, these proteins are unlikely to belong to the same family. Detailed analysis of the secondary structure modeling shows that JHBPs may contain a beta-barrel motif flanked by alpha-helices and thus be evolutionary related to the same superfamily as calycins.
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Affiliation(s)
- Jan M Rodriguez Parkitna
- Division of Biochemistry, Institute of Organic Chemistry, Biochemistry and Biotechnology, Wrocław University of Technology, Poland
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Krzyzanowska D, Ozyhar A, Lalik A, Parkitna JM, Szkudlarek J, Waśniowska K, Lisowska E, Kochman M. Juvenile hormone binding protein and transferrin from Galleria mellonella share a similar structural motif. Biol Chem 2001; 382:1027-37. [PMID: 11530933 DOI: 10.1515/bc.2001.129] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
It has been previously suggested that juvenile hormone binding protein(s) (JHBP) belongs to a new class of proteins. In the search for other protein(s) that may contain structural motifs similar to those found in JHBP, hemolymph from Galleria mellonella (Lepidoptera) was chromatographed over a Sephadex G-200 column and resulting fractions were subjected to SDS-PAGE, transferred onto nitrocellulose membrane and scanned with a monoclonal antibody, mAb 104, against hemolymph JHBP. Two proteins yielded a positive reaction with mAb 104, one corresponding to JHBP and the second corresponding to a transferrin, as judged from N-terminal amino acid sequencing staining. Transferrin was purified to about 80% homogeneity using a two-step procedure including Sephadex G-200 gel filtration and HPLC MonoQ column chromatography. Panning of a random peptide display library and analysis with immobilized synthetic peptides were applied for finding a common epitope present in JHBP and the transferrin molecule. The postulated epitope motif recognized by mAb 104 in the JHBP sequence is RDTKAVN, and is localized at position 82-88.
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Affiliation(s)
- D Krzyzanowska
- Division of Biochemistry, Institute of Organic Chemistry, Biochemistry and Biotechnology, Wrocław University of Technology, Poland
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Campbell PM, Oakeshott JG, Healy MJ. Purification and kinetic characterisation of juvenile hormone esterase from Drosophila melanogaster. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 1998; 28:501-515. [PMID: 9718682 DOI: 10.1016/s0965-1748(98)00037-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Juvenile hormone esterase (JHE) from the prepupal stage of Drosophila melanogaster was purified about 429-fold to near homogeneity by selective precipitations, isoelectric focussing, anion exchange and gel filtration chromatography. The KM and Vmax of the purified enzyme for juvenile hormone III (JHIII) hydrolysis are 89 nM and at least 590 nmol/min/mg, respectively. JHE also hydrolyses the artificial substrate alpha-naphthyl acetate with a KM of 120 micro M and a Vmax of at least 70 mumol/min/mg. Competition of JHIII hydrolysis by five juvenile hormones and twenty-four JH analogues showed JHE is highly selective for JHIII and JHIII bisepoxide (JHP3), and both may be in vivo substrates. Binding in the active site of JHE is promoted by structural features found in JHIII and JHB3 including the epoxide groups in their natural orientations, methyl (rather than ethyl) side-chains, and the 2E, 3 double bond that is conjugated with the ester group. Binding is reduced by almost any departure from these structural features of JH. Co-incubation of the haemolymph JH binding protein, lipophorin, with JHE indicates lipophorin might modulate JH hydrolysis by competition for binding of JH.
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Affiliation(s)
- P M Campbell
- CSIRO Division of Entomology, Canberra, ACT, Australia.
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Wieczorek E, Kochman M. Conformational change of the haemolymph juvenile-hormone-binding protein from Galleria mellonella (L). EUROPEAN JOURNAL OF BIOCHEMISTRY 1991; 201:347-53. [PMID: 1935932 DOI: 10.1111/j.1432-1033.1991.tb16292.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A juvenile-hormone-binding protein (juvenile-hormone carrier), isolated from Galleria mellonella haemolymph, was treated with trypsin, chymotrypsin, carboxypeptidase A and subtilisin. Among these enzymes, only subtilisin was able to affect juvenile-hormone-binding activity of this protein. With SDS/PAGE it was shown that juvenile-hormone-binding protein, a 32-kDa peptide, is first slowly converted into a 30-kDa molecule, then into two or three smaller-molecular-mass species (20-25 kDa), which in turn were further digested to small peptides undetectable in PAGE. The 30-kDa peptide has a 2.4-times-higher dissociation constant for juvenile hormone than the native protein. No binding activity was detected for 20-25-kDa peptides. The rate of proteolysis of juvenile-hormone-binding protein was decreased by more than twofold in the presence of hormone, however, the overall cleavage pattern was unchanged. Under non-denaturing conditions, free binding-protein molecules could be separated from juvenile-hormone-binding-protein complex due to a slower electrophoretic mobility of the complex. As judged from ultracentrifugation and cross-linking experiments, binding of the hormone to its haemolymph carrier does not induce formation of oligomers, but shifts the sedimentation coefficient from 2.30S to 2.71S. It is concluded that juvenile-hormone binding induces a conformational transition of its carrier protein. This hormone-induced change might have a physiological significance for signal transmission.
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Affiliation(s)
- E Wieczorek
- Division of Biochemistry, Technical University of Wrocław, Poland
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Identification of juvenile-hormone-binding proteins on blotted electropherograms using tritiated juvenile hormones. ACTA ACUST UNITED AC 1989. [DOI: 10.1007/bf01950177] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Effect of low rearing temperature on development of Galleria mellonella larvae and their sensitivity to juvenilizing treatment. ACTA ACUST UNITED AC 1989. [DOI: 10.1016/0300-9629(89)90147-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Wiśniewski JR, Wawrzeńczyk C, Prestwich GD, Kochman M. Juvenile hormone binding proteins from the epidermis of Galleria mellonella. ACTA ACUST UNITED AC 1988. [DOI: 10.1016/0020-1790(88)90033-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Ozyhar A, Kochman M. Juvenile-hormone-binding protein from the hemolymph of Galleria mellonella (L). Isolation and characterization. EUROPEAN JOURNAL OF BIOCHEMISTRY 1987; 162:675-82. [PMID: 3830162 DOI: 10.1111/j.1432-1033.1987.tb10690.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A juvenile-hormone-binding protein (JHBP) has been isolated from Galleria mellonella hemolymph by gel filtration, phosphocellulose chromatography, and by chromatofocusing. The isolated protein is homogeneous as judged by column chromatography and gel electrophoresis in the presence and absence of denaturing agent. It has a relative molecular mass of 32,000, Stokes radius 2.4 nm, sedimentation coefficient of 2.3 S, molar absorption coefficient at 280 nm epsilon = 2.34 X 10(4) M-1 cm-1, and is composed of a single polypeptide chain. Chromatofocusing analysis (pI 8.6) and isoelectric focusing (pI 8.1) indicate that the JHBP is an alkaline protein. Its amino acid composition and fluorescence absorption spectra indicate that the protein does not contain tryptophan residues. The protein exhibits one class of binding sites for juvenile hormone (JH), 0.8 per molecule, with the following dissociation constants: JH I, 8.5 X 10(-8) M; JH II, 7.2 X 10(-8) M; JH III, 47 X 10(-8) M. The JHBP binds (10R, 11S)-JH II enantiomer with 2.3-times higher affinity then (10S, 11R)-JH II enantiomer. The pH optimum of binding is 7.0.
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Woodring J, Sparks TC. Juvenile hormone esterase activity in the plasma and body tissue during the larval and adult stages of the house cricket. ACTA ACUST UNITED AC 1987. [DOI: 10.1016/0020-1790(87)90045-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Biosynthesis and degradation of juvenile hormone in corpora allata and imaginal wing discs of Galleria mellonella (L.). ACTA ACUST UNITED AC 1987. [DOI: 10.1016/0020-1790(87)90167-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Ożyhar A, Kochman M. Generation of multiple molecular forms of juvenile hormone binding protein fromGalleria mellonella hemolymph. ACTA ACUST UNITED AC 1986. [DOI: 10.1007/bf01946421] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Wiśniewski JR, Rudnicka M, Kochman M. Tissue specific juvenile hormone degradation in Galleria mellonella. ACTA ACUST UNITED AC 1986. [DOI: 10.1016/0020-1790(86)90122-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Dillwith J, Mane S, Chippendale G. High affinity juvenile hormone binding protein of the haemolymph of the southwestern corn borer, Diatraea grandiosella. ACTA ACUST UNITED AC 1985. [DOI: 10.1016/0020-1790(85)90012-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Goodman WG. Relative hemolymph juvenile hormone binding capacity during larval, pupal and adult development in Manduca sexta. ACTA ACUST UNITED AC 1985. [DOI: 10.1016/0020-1790(85)90115-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Rudnicka M, Kochman M. Purification of the juvenile hormone esterase from the haemolymph of the wax moth Galleria mellonella (lepidoptera). ACTA ACUST UNITED AC 1984. [DOI: 10.1016/0020-1790(84)90029-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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