Search tips
Search criteria

Results 1-3 (3)

Clipboard (0)

Select a Filter Below

Year of Publication
Document Types
1.  Mo-CBP3, an Antifungal Chitin-Binding Protein from Moringa oleifera Seeds, Is a Member of the 2S Albumin Family 
PLoS ONE  2015;10(3):e0119871.
Mo-CBP3 is a chitin-binding protein from M. oleifera seeds that inhibits the germination and mycelial growth of phytopathogenic fungi. This protein is highly thermostable and resistant to pH changes, and therefore may be useful in the development of new antifungal drugs. However, the relationship of MoCBP3 with the known families of carbohydrate-binding domains has not been established. In the present study, full-length cDNAs encoding 4 isoforms of Mo-CBP3 (Mo-CBP3-1, Mo-CBP3-2, Mo-CBP3-3 and Mo-CBP3-4) were cloned from developing seeds. The polypeptides encoded by the Mo-CBP3 cDNAs were predicted to contain 160 (Mo-CBP3-3) and 163 amino acid residues (Mo-CBP3-1, Mo-CBP3-2 and Mo-CBP3-4) with a signal peptide of 20-residues at the N-terminal region. A comparative analysis of the deduced amino acid sequences revealed that Mo-CBP3 is a typical member of the 2S albumin family, as shown by the presence of an eight-cysteine motif, which is a characteristic feature of the prolamin superfamily. Furthermore, mass spectrometry analysis demonstrated that Mo-CBP3 is a mixture of isoforms that correspond to different mRNA products. The identification of Mo-CBP3 as a genuine member of the 2S albumin family reinforces the hypothesis that these seed storage proteins are involved in plant defense. Moreover, the chitin-binding ability of Mo-CBP3 reveals a novel functionality for a typical 2S albumin.
PMCID: PMC4366206  PMID: 25789746
2.  Purification, partial characterization and preliminary X-ray diffraction analysis of a mannose-specific lectin from Cymbosema roseum seeds 
A lectin from C. roseum seeds (CRL) has been purified, characterized and crystallized.
A lectin from Cymbosema roseum seeds (CRL) was purified, characterized and crystallized. The best crystals grew in a month and were obtained by the vapour-diffusion method using a precipitant solution consisting of 0.1 M Tris–HCl pH 7.8, 8%(w/v) PEG 3350 and 0.2 M proline at a constant temperature of 293 K. A data set was collected to 1.77 Å resolution at a synchrotron-radiation source. CRL crystals are orthorhombic, belonging to space group P212121. Crystallographic refinement and full amino-acid sequence determination are in progress.
PMCID: PMC2197170  PMID: 16511310
Cymbosema roseum; Diocleinae; lectins
3.  Crystallization and preliminary X-ray diffraction analysis of a new chitin-binding protein from Parkia platycephala seeds 
Crystals of P. platycephala chintinase/lectin (PPL-2) belong to the orthorhombic space group P212121, with unit-cell parameters a = 55.19, b = 59.95, c = 76.60 Å. The preliminary cystal structure of PPL-2 was solved at a resolution of 1.73 Å by molecular replacement, presenting a correlation coefficient of 0.558 and an R factor of 0.439.
A chitin-binding protein named PPL-2 was purified from Parkia platycephala seeds and crystallized. Crystals belong to the orthorhombic space group P212121, with unit-cell parameters a = 55.19, b = 59.95, c = 76.60 Å, and grew over several days at 293 K using the hanging-drop method. Using synchrotron radiation, a complete structural data set was collected to 1.73 Å resolution. The preliminary crystal structure of PPL-2, determined by molecular replacement, presents a correlation coefficient of 0.558 and an R factor of 0.439. Crystallographic refinement is in progress.
PMCID: PMC1978108  PMID: 16511174
chitin-binding proteins; chitinases; Parkia platycephala; lectins

Results 1-3 (3)