Abstract: The present invention relates to the isolation and to the characterization of two proteins having a novel enzymatic activity, i.e. a porphyranase activity. These proteins are useful for hydrolyzing polysaccharides containing sulfated agaro-colloids and for producing oligo-porphyrans, notably oligo-porphyrans with a defined structure and size.

Abstract: The present invention relates to the isolation and to the characterization of two proteins having a novel enzymatic activity, i.e. a porphyranase activity. These proteins are useful for hydrolyzing polysaccharides containing sulfated agaro-colloids and for producing oligo-porphyrans, notably oligo-porphyrans with a defined structure and size.

Abstract: The invention concerns endofucanases suitable for preparing fuco-oligosaccharides by enzymatic hydrolysis of fucanes. It also concerns a bacterium producing endofucanases and the preparation of said enzyme from the bacterium. It further concerns endofucanase genes and it finally concerns the use said fuco-oligosaccharides for plant protection.

Abstract: The present invention relates to genes which code for glycosyl hydrolases having an HCA score with the iota-carrageenase of Alteromonas fortis which is greater than or equal to 65% over the domain extending between amino acids 164 and 311 of the protein sequence SEQ ID No. 2 of said iota-carrageenase, and to genes which code for glycosyl hydrolases having an HCA score with the kappa-carrageenase of Alteromonas carrageenovora which is greater than or equal to 75% over the domain extending between amino acids 117 and 262 of the protein sequence SEQ ID No. 6 of said kappa-carrageenase.

Abstract: The invention relates to the novel Cytophaga drobachiensis strain deposited in the DSMZ Collection (Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH (German Collection of Microorganisms and Cell Cultures)) on May 8, 1998 under the number DSM 12170, the agaA gene coding for a &bgr;-agarase and having SEQ ID No. 1, the agaB gene coding for a &bgr;-agarase and having SEQ ID No. 3, said genes coding for a &bgr;-agarase of Cytophaga drobachiensis DSM 12170, and the specific nucleic acid sequence of the agaA gene coding for a specific peptide fragment AgaA′ which has conserved &bgr;-agarase activity, and having SEQ ID No. 5, as well as the protein AgaA of C. drobachiensis DSM 12170 having SEQ ID No. 2, the protein AgaB of C. drobachiensis DSM 12170 having SEQ ID No. 4 and said peptide fragment AgaA′ of C. drobachiensis DSM 12170 having SEQ ID No. 6.

Abstract: The present invention relates to genes which code for glycosyl hydrolases having an HCA score with the iota-carrageenase of Alteromonas fortis which is greater than or equal to 65% over the domain extending between amino acids 164 and 311 of the protein sequence SEQ ID No. 2 of said iota-carrageenase, and to genes which code for glycosyl hydrolases having an HCA score with the kappa-carrageenase of Alteromonas carrageenovora which is greater than or equal to 75% over the domain extending between amino acids 117 and 262 of the protein sequence SEQ ID No. 6 of said kappa-carrageenase.

Abstract: The present invention relates to genes which code for glycosyl hydrolases having an HCA score with the iota-carrageenase of Alteromonas fortis which is greater than or equal to 65% over the domain extending between amino acids 164 and 311 of the protein sequence SEQ ID No. 2 of said iota-carrageenase, and to genes which code for glycosyl hydrolases having an HCA score with the kappa-carrageenase of Alteromonas carrageenovora which is greater than or equal to 75% over the domain extending between amino acids 117 and 262 of the protein sequence SEQ ID No. 6 of said kappa-carrageenase.

Abstract: The present invention relates to genes which code for glycosyl hydrolases having an HCA score with the iota-carrageenase of Alteromonas fortis which is greater than or equal to 65% over the domain extending between amino acids 164 and 311 of the protein sequence SEQ ID No. 2 of said iota-carrageenase, and to genes which code for glycosyl hydrolases having an HCA score with the kappa-carrageenase of Alteromonas carrageenovora which is greater than or equal to 75% over the domain extending between amino acids 117 and 262 of the protein sequence SEQ ID No. 6 of said kappa-carrageenase.

Abstract: The present invention relates to genes which code for glycosyl hydrolases having an HCA score with the iota-carrageenase of Alteromonas fortis which is greater than or equal to 65% over the domain extending between amino acids 164 and 311 of the protein sequence SEQ ID No. 2 of said iota-carrageenase, and to genes which code for glycosyl hydrolases having an HCA score with the kappa-carrageenase of Alteromonas carrageenovora which is greater than or equal to 75% over the domain extending between amino acids 117 and 262 of the protein sequence SEQ ID No. 6 of said kappa-carrageenase.