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Characterization of chitinase C from a marine bacterium, Alteromonas sp. strain O-7, and its corresponding gene and domain structure. 1998

H Tsujibo, and H Orikoshi, and K Shiotani, and M Hayashi, and J Umeda, and K Miyamoto, and C Imada, and Y Okami, and Y Inamori
Osaka University of Pharmaceutical Sciences, Japan. tsujibo@oysun01.oups.ac.jp

One of the chitinase genes of Alteromonas sp. strain O-7, the chitinase C-encoding gene (chiC), was cloned, and the nucleotide sequence was determined. An open reading frame coded for a protein of 430 amino acids with a predicted molecular mass of 46,680 Da. Alignment of the deduced amino acid sequence demonstrated that ChiC contained three functional domains, the N-terminal domain, a fibronectin type III-like domain, and a catalytic domain. The N-terminal domain (59 amino acids) was similar to that found in the C-terminal extension of ChiA (50 amino acids) of this strain and furthermore showed significant sequence homology to the regions found in several chitinases and cellulases. Thus, to evaluate the role of the domain, we constructed the hybrid gene that directs the synthesis of the fusion protein with glutathione S-transferase activity. Both the fusion protein and the N-terminal domain itself bound to chitin, indicating that the N-terminal domain of ChiC constitutes an independent chitin-binding domain.

UI MeSH Term Description Entries
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D011993 Recombinant Fusion Proteins Recombinant proteins produced by the GENETIC TRANSLATION of fused genes formed by the combination of NUCLEIC ACID REGULATORY SEQUENCES of one or more genes with the protein coding sequences of one or more genes. Fusion Proteins, Recombinant,Recombinant Chimeric Protein,Recombinant Fusion Protein,Recombinant Hybrid Protein,Chimeric Proteins, Recombinant,Hybrid Proteins, Recombinant,Recombinant Chimeric Proteins,Recombinant Hybrid Proteins,Chimeric Protein, Recombinant,Fusion Protein, Recombinant,Hybrid Protein, Recombinant,Protein, Recombinant Chimeric,Protein, Recombinant Fusion,Protein, Recombinant Hybrid,Proteins, Recombinant Chimeric,Proteins, Recombinant Fusion,Proteins, Recombinant Hybrid
D002688 Chitinases Glycoside hydrolases that break down glycosidic bonds in CHITIN. They are important for insect and worm morphogenesis and plant defense against pathogens. Human chitinases may play a role in the etiology of allergies and asthma. Chitinase,Endochitinase
D003001 Cloning, Molecular The insertion of recombinant DNA molecules from prokaryotic and/or eukaryotic sources into a replicating vehicle, such as a plasmid or virus vector, and the introduction of the resultant hybrid molecules into recipient cells without altering the viability of those cells. Molecular Cloning
D006088 Gram-Negative Aerobic Bacteria A large group of aerobic bacteria which show up as pink (negative) when treated by the gram-staining method. This is because the cell walls of gram-negative bacteria are low in peptidoglycan and thus have low affinity for violet stain and high affinity for the pink dye safranine. Achromatiaceae,Achromatium,Achromobacteriaceae,Gram Negative Aerobic Bacteria
D000595 Amino Acid Sequence The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION. Protein Structure, Primary,Amino Acid Sequences,Sequence, Amino Acid,Sequences, Amino Acid,Primary Protein Structure,Primary Protein Structures,Protein Structures, Primary,Structure, Primary Protein,Structures, Primary Protein
D001483 Base Sequence The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence. DNA Sequence,Nucleotide Sequence,RNA Sequence,DNA Sequences,Base Sequences,Nucleotide Sequences,RNA Sequences,Sequence, Base,Sequence, DNA,Sequence, Nucleotide,Sequence, RNA,Sequences, Base,Sequences, DNA,Sequences, Nucleotide,Sequences, RNA

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