Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: EC:3.2.1.23 (beta-galactosidase)
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A Gram-negative, non-motile, non-spore-forming, short rod-shaped bacterium (UST950701-009P(T)) was isolated from a marine biofilm in Hong Kong waters. Colonies are pink in colour, convex with a smooth surface and entire edge. Brown diffusible pigment is produced. Whitish colonies, with otherwise identical morphology, emerge from every culture upon ageing. The white colonies can be maintained as separate cultures (UST950701-009W) without turning pink. UST950701-009P(T) and UST950701-009W have identical 16S rRNA gene sequences and similar G+C (65.9-66.2 mol%) and fatty acid (86.22-88.52 % 18 : 1omega7c) contents. Phylogenetic analysis of the 16S rRNA gene sequence places UST950701-009P(T) within the Rhodobacter group of the alpha-subclass of the Proteobacteria. The nearest neighbours belong to the genus Loktanella, with similarity values ranging from 94.5 to 95.5 %. Data on G+C and fatty acid contents support the affiliation to the genus Loktanella. UST950701-009P(T) and -009W are heterotrophic, strictly aerobic and require NaCl for growth (2.0-14.0 %). Both grow in pH 5.0-10.0 and at 8-44 degrees C. Both are positive in oxidase, catalase and beta-galactosidase tests, but they differ in the pattern of carbohydrate oxidation and assimilation. Molecular evidence together with phenotypic characteristics shows that UST950701-009P(T) constitutes a novel species within the genus Loktanella. The name Loktanella hongkongensis sp. nov. is proposed; the type strain is UST950701-009P(T) (=NRRL B-41039(T)=JCM 12479(T)) and a morphovar is UST950701-009W (=NRRL B-41040=JCM 12480).
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PMID:Loktanella hongkongensis sp. nov., a novel member of the alpha-Proteobacteria originating from marine biofilms in Hong Kong waters. 1554 71

The taxonomic position of three novel sea-water isolates was determined. The strains studied were strictly aerobic, heterotrophic, pigmented, motile by gliding, Gram-negative and oxidase-, catalase-, beta-galactosidase- and alkaline phosphatase-positive. 16S rRNA gene sequence phylogenetic analysis indicated that the strains KMM 6020T, KMM 6021 and KMM 6028 occupied a distinct lineage within the family Flavobacteriaceae. The major respiratory quinone was MK-6. The predominant fatty acids were i15 : 0, i15 : 1, i15 : 0 3-OH, i17 : 1omega9c and i17 : 0 3-OH. On the basis of phenotypic, chemotaxonomic, genotypic and phylogenetic characteristics, the novel bacteria were assigned to the genus Aquimarina gen. nov., as Aquimarina muelleri gen. nov., sp. nov. The type strain is KMM 6020T (=KCTC 12285T=LMG 22569T). From the results of the 16S rRNA gene sequence analysis and phenotypic features, the species [Cytophaga] latercula Lewin 1969 is proposed to be reclassified in the new genus Stanierella as Stanierella latercula gen. nov., comb. nov., with type strain CIP 104806T (=ATCC 23177T=NCIMB 1399T=LMG 1343T).
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PMID:Description of Aquimarina muelleri gen. nov., sp. nov., and proposal of the reclassification of [Cytophaga] latercula Lewin 1969 as Stanierella latercula gen. nov., comb. nov. 1565 78

The taxonomic position of a novel marine bacterium isolated from the green alga Ulva fenestrata collected in the Sea of Japan was established. Cells of the strain studied, designated KMM 6017T, were strictly aerobic, heterotrophic, pink-pigmented, non-motile by gliding, Gram-negative and oxidase-, catalase-, beta-galactosidase- and alkaline phosphatase-positive. 16S rRNA gene sequence analysis indicated that the strain occupied a distinct lineage within the phylum 'Bacteroidetes' and formed a cluster with [Flexibacter] tractuosus and Reichenbachia agariperforans. The G+C content of the DNA of KMM 6017T was 40.2 mol%. The major respiratory quinone was MK-7. The predominant fatty acids were i15 : 1, i15 : 0 and i17 : 0 3-OH (34.2, 24 and 7.7 %, respectively). On the basis of phenotypic, chemotaxonomic, genotypic and phylogenetic characteristics, the novel bacterium was assigned to the genus Roseivirga gen. nov., as Roseivirga ehrenbergii gen. nov., sp. nov. The type strain is KMM 6017T (=KCTC 12282T=LMG 22567T).
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PMID:Roseivirga ehrenbergii gen. nov., sp. nov., a novel marine bacterium of the phylum 'Bacteroidetes', isolated from the green alga Ulva fenestrata. 1565 79

A bacterial strain, designated KMM 6049T, was isolated from the sea urchin Strongylocentrotus intermedius inhabiting the Sea of Japan. The bacterium studied was strictly aerobic, heterotrophic, yellow-pigmented, non-motile, Gram-negative and oxidase-, catalase-, beta-galactosidase- and alkaline phosphatase-positive. 16S rRNA gene sequence analysis indicated that strain KMM 3524T was closely related to Salegentibacter holothuriorum and Salegentibacter salegens (sharing 97.7 and 98 % sequence similarity, respectively). DNA-DNA relatedness levels between strains KMM 6049T and S. holothuriorum KMM 3524T and S. salegens DSM 5424T were 24 and 45 %, respectively, indicating that KMM 6049T belongs to a novel species of the genus Salegentibacter, for which the name Salegentibacter mishustinae sp. nov. is proposed. The type strain is KMM 6049T (=KCTC 12263T=LMG 22584T=NBRC 100592T).
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PMID:Salegentibacter mishustinae sp. nov., isolated from the sea urchin Strongylocentrotus intermedius. 1565 80

A novel marine bacterium, strain KMM 6050T, was isolated from the sea urchin Strongylocentrotus intermedius, which inhabits the Sea of Japan. The strain studied was strictly aerobic, heterotrophic, yellow-orange-pigmented, motile by gliding, Gram-negative and oxidase-, catalase-, beta-galactosidase- and alkaline phosphatase-positive. The results of 16S rRNA gene sequence analysis showed that strain KMM 6050T occupies a distinct lineage within the family Flavobacteriaceae and is most closely related to the species Mesonia algae and Salegentibacter salegens (sequence similarity of 92.5-92.6 %). The DNA G+C content of KMM 6050T was 39.6 mol%. The major respiratory quinone was MK-6. The predominant fatty acids were i15 : 0, a15 : 0, 15 : 0, i16 : 1, i16 : 0, i16 : 0 3-OH and i17 : 0 3-OH. On the basis of phenotypic, chemotaxonomic, genotypic and phylogenetic characteristics, the novel bacterium has been assigned to the genus Gramella gen. nov., as Gramella echinicola sp. nov. The type strain is KMM 6050T (=KCTC 12278T=NBRC 100593T=LMG 22585T).
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PMID:Gramella echinicola gen. nov., sp. nov., a novel halophilic bacterium of the family Flavobacteriaceae isolated from the sea urchin Strongylocentrotus intermedius. 1565 6

During a search for xylan-degrading micro-organisms, a sporulating bacterium was recovered from xylan-containing agar plates exposed to air in a research laboratory (Salamanca University, Spain). The airborne isolate (designated strain XIL14T) was identified by 16S rRNA gene sequencing as representing a Paenibacillus species most closely related to Paenibacillus illinoisensis JCM 9907T (99.3 % sequence similarity) and Paenibacillus pabuli DSM 3036T (98 % sequence similarity). Phenotypic, chemotaxonomic and DNA-DNA hybridization data indicated that the isolate belongs to a novel species of the genus Paenibacillus. Cells of strain XIL14T were motile, sporulating, rod-shaped, Gram-positive and facultatively anaerobic. The predominant cellular fatty acids were anteiso-C(15 : 0) and C(16 : 0). The DNA G+C content of strain XIL14T was 50.5 mol%. Growth was observed with many carbohydrates, including xylan, as the only carbon source and gas production was not observed from glucose. Catalase was positive and oxidase was negative. The airborne isolate produced a variety of hydrolytic enzymes, including xylanases, amylases, gelatinase and beta-galactosidase. DNA-DNA hybridization levels between strain XIL14T and P. illinoisensis DSM 11733T and P. pabuli DSM 3036T were 43.3 and 36.3 %, respectively. According to the data obtained, strain XIL14T is considered to represent a novel species for which the name Paenibacillus xylanilyticus sp. nov. is proposed (=LMG 21957T=CECT 5839T).
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PMID:Paenibacillus xylanilyticus sp. nov., an airborne xylanolytic bacterium. 1565 9

Members of the species Agrobacterium ferrugineum were isolated from marine environments. The type strain of this species (= LMG 22047(T) = ATCC 25652(T)) was recently reclassified in the new genus Pseudorhodobacter, in the order 'Rhodobacterales' of the class 'Alphaproteobacteria'. Strain LMG 128 (= ATCC 25654) was also initially classified as belonging to the species Agrobacterium ferrugineum; however, the nearly complete 16S rRNA gene sequence of this strain indicated that it does not belong within the genus Agrobacterium or within the genus Pseudorhodobacter. The closest related organism, with 95.5 % 16S rRNA gene similarity, was Aquamicrobium defluvii from the family 'Phyllobacteriaceae' in the order 'Rhizobiales'. The remaining genera from this order had 16S rRNA gene sequence similarities that were lower than 95.1 % with respect to strain LMG 128. These phylogenetic distances suggested that strain LMG 128 belonged to a different genus. The major fatty acid present in strain LMG 128 was mono-unsaturated straight chain 18 : 1omega7c. The G + C content of the DNA was 53.1 mol%. Strain LMG 128 grew at 4 degrees C but not at 40 degrees C, and tolerated up to 5 % NaCl. The pH range for growth was 6-8. It produced urease and beta-galactosidase, and hydrolysed aesculin. Denitrification was negative. Growth was observed with many carbohydrates as the only carbon source. The data from this polyphasic study indicate that this strain belongs to a new genus of the family 'Phyllobacteriaceae', and therefore it is proposed that strain LMG 128(T) should be reclassified as representing a novel species within the new genus Hoeflea gen. nov., for which the name Hoeflea marina sp. nov. is proposed.
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PMID:Reclassification of Agrobacterium ferrugineum LMG 128 as Hoeflea marina gen. nov., sp. nov. 1587 49

Two sporulating bacterial strains designated CECAP06(T) and CECAP16 were isolated from the rhizosphere of the legume Cicer arietinum in Argentina. Almost-complete 16S rRNA gene sequences identified the isolates as a Paenibacillus species. It was most closely related to Paenibacillus cineris LMG 18439(T) (99.6 % sequence similarity), Paenibacillus favisporus LMG 20987(T) (99.4 % sequence similarity) and Paenibacillus azoreducens DSM 13822(T) (97.7 % sequence similarity). The cells of this novel species were motile, sporulating, rod-shaped, Gram-positive and strictly aerobic. The predominant fatty acids were anteiso-C(15 : 0), C(16 : 0) and iso-C(16 : 0). The DNA G+C content of strains CECAP06(T) and CECAP16 was 51.3 and 50.9 mol%, respectively. Growth was observed from many carbohydrates, but gas production was not observed from glucose. Catalase and oxidase activities were present. The isolates produced beta-galactosidase and hydrolysed aesculin. Gelatinase, caseinase and urease were not produced. The results of DNA-DNA hybridization showed that the strains from this study constitute a novel species of the genus Paenibacillus, for which the name Paenibacillus rhizosphaerae sp. nov. is proposed. The type strain is CECAP06(T) (=LMG 21955(T) = CECT 5831(T)).
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PMID:Paenibacillus rhizosphaerae sp. nov., isolated from the rhizosphere of Cicer arietinum. 1587 72

A novel strictly aerobic, heterotrophic, pink-pigmented, non-motile, Gram-negative, oxidase-, catalase-, beta-galactosidase- and alkaline phosphatase-positive marine bacterium, designated strain KMM 6058(T), was isolated from the sea urchin Strongylocentrotus intermedius and studied using a polyphasic taxonomic approach. The G+C content of the DNA of the isolate was 41.3 mol%. The predominant fatty acids were i15:1, i15:0, a15:0 and i17:0 3-OH. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain KMM 6058(T) formed a monophyletic clade with Roseivirga ehrenbergii, with 99% similarity. On the basis of phenotypic, chemotaxonomic, genotypic and phylogenetic characteristics, the novel bacterium should be assigned to the genus Roseivirga as Roseivirga echinicomitans sp. nov. The type strain is KMM 6058(T) (=KCTC 12370(T)=LMG 22587(T)).
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PMID:Roseivirga echinicomitans sp. nov., a novel marine bacterium isolated from the sea urchin Strongylocentrotus intermedius, and emended description of the genus Roseivirga. 1616 68

Bacterial strain PETP02(T) was isolated from nodules of Trifolium pratense growing in a Spanish soil. Phylogenetic analysis of the 16S rRNA gene sequence showed that this strain represents a member of the genus Phyllobacterium. However, divergence found with the 16S rRNA gene sequence of the single recognized species of this genus, Phyllobacterium myrsinacearum, indicated that strain PETP02(T) belongs to a different species. The results of DNA-DNA hybridization, phenotypic tests and fatty acid analyses confirmed that this strain represents a novel species of the genus Phyllobacterium, for which the name Phyllobacterium trifolii sp. nov. is proposed. The type strain is PETP02(T) (=LMG 22712(T)=CECT 7015(T)). This strain was strictly aerobic and used several carbohydrates as carbon source. It was not able to reduce nitrate. Aesculin hydrolysis was negative. It did not produce urease, arginine dihydrolase, gelatinase or beta-galactosidase. The DNA G+C content was 56.4 mol%. The nodD gene of this strain showed a sequence closely related to those of strains able to nodulate Lupinus. Infectivity tests showed that this strain is able to produce nodules in both Trifolium repens and Lupinus albus.
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PMID:Phyllobacterium trifolii sp. nov., nodulating Trifolium and Lupinus in Spanish soils. 1616 99


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