Streptococcus gallolyticus

General Information

Streptococcus gallolyticus is a fascinating microorganism that has garnered significant attention in recent years due to its unique characteristics and implications in human health. One of the most noteworthy aspects of S. gallolyticus is its strong association with colorectal cancer (CRC). Studies have shown that this bacterium is frequently found in the gut microbiota of patients with CRC, suggesting a potential role in the pathogenesis of the disease. This association has made S. gallolyticus a subject of intense research, as understanding its mechanisms could lead to new diagnostic and therapeutic strategies for CRC. Another interesting feature of S. gallolyticus is its ability to metabolize tannins, which are complex polyphenolic compounds found in various plants. This metabolic capability is relatively rare among bacteria and highlights the ecological versatility of S. gallolyticus. The bacterium produces tannase, an enzyme that breaks down tannins into simpler compounds, which can then be utilized as a carbon source. This property not only underscores the bacterium's adaptability but also has potential applications in biotechnology, such as in the processing of tannin-rich agricultural by-products. In addition to its clinical and ecological significance, S. gallolyticus is also of interest due to its role in infective endocarditis, particularly in elderly patients. The bacterium can enter the bloodstream and adhere to damaged heart valves, leading to serious infections. This pathogenic capability underscores the importance of understanding the virulence factors and host interactions of S. gallolyticus to develop better preventive and therapeutic measures. Overall, Streptococcus gallolyticus is a microorganism of considerable interest due to its association with colorectal cancer, unique metabolic capabilities, and clinical relevance in infective endocarditis. Ongoing research into this bacterium holds promise for advancing our knowledge in microbiology, oncology, and infectious diseases.

Streptococcus gallolyticus is a fascinating bacterium primarily known for its association with the gastrointestinal tract of humans and animals. This organism is particularly interesting due to its role in human health, as it has been implicated in various clinical conditions, including endocarditis and colorectal cancer. The ability of S. gallolyticus to act as a potential marker for colorectal malignancies makes it a valuable subject of research in oncology. One of the unique characteristics of S. gallolyticus is its ability to ferment a variety of carbohydrates, which allows it to thrive in diverse environments within the gut. This metabolic versatility not only aids in its survival but also contributes to its ecological niche among gut microbiota. Research has shown that certain strains of S. gallolyticus can produce bacteriocins, which are antimicrobial peptides that inhibit the growth of competing bacteria, highlighting its potential role in microbial ecology. Furthermore, S. gallolyticus is divided into several subspecies, including S. gallolyticus subsp. gallolyticus and S. gallolyticus subsp. pasteurianus, each exhibiting distinct pathogenic profiles and virulence factors. This diversity within the species provides a rich area for study, particularly in understanding the mechanisms of pathogenesis and host interaction. In summary, Streptococcus gallolyticus stands out not only for its clinical significance but also for its ecological adaptability and potential contributions to our understanding of gut health and disease. Its dual role as both a commensal organism and a pathogen makes it a compelling subject for ongoing research in microbiology and medicine.

Taxonomy

Superkingdom: Bacteria

Phylum: Bacillota

Class: Bacilli

Order: Lactobacillales

Family: Streptococcaceae

Genus: Streptococcus

Species: Streptococcus gallolyticus

NCBI ID

315405

Genome Info

FTP Path:
ftp.ncbi.nlm.nih.gov/genomes/all/GCA/013/267/695/GCA_013267695.1_ASM1326769v1

File for sequence-based predictions:
GCA_013267695.1_ASM1326769v1_genomic.fasta

Descriptions

Clinical Implications and Relevance

Source: gpt-4o-mini-2024-07-18

The organism Streptococcus gallolyticus (formerly known as Streptococcus bovis) is a group of bacteria that has significant clinical implications, particularly in relation to human health and disease associations. It is known to be a part of the normal flora of the gastrointestinal tract but can become pathogenic under certain conditions. Infections caused by S. gallolyticus are often associated with endocarditis, a serious infection of the heart valves, and can also lead to bacteremia and septicemia. Notably, the presence of S. gallolyticus in blood cultures is often linked to colorectal cancer, making it a potential marker for this malignancy. In terms of pathogenicity, S. gallolyticus exhibits several immune evasion strategies, including the ability to adhere to host tissues and form biofilms, which complicates treatment and eradication efforts. The organism has also shown varying degrees of antimicrobial resistance, particularly to beta-lactam antibiotics, which poses challenges in clinical management. While S. gallolyticus is primarily associated with disease, it is also being studied for potential medical applications, such as the development of probiotics, although this area is still under investigation. Overall, the clinical relevance of Streptococcus gallolyticus underscores the importance of monitoring this organism in patients, especially those presenting with symptoms of endocarditis or gastrointestinal disorders.

Habitat and Ecological Niches

Source: gpt-4o-mini-2024-07-18

Streptococcus gallolyticus is primarily associated with the gastrointestinal tract of warm-blooded animals, including humans. This microorganism thrives in the anaerobic conditions found within the intestines, where it plays a significant role in the fermentation of carbohydrates. Its presence is often linked to the breakdown of complex polysaccharides, contributing to the overall microbial community and nutrient cycling within this environment. Ecological Niches: In the gastrointestinal tract, S. gallolyticus can be found in both healthy and diseased states. It is known to be part of the normal gut flora but can also be an opportunistic pathogen, particularly in individuals with underlying health conditions. This dual role highlights its adaptability and importance in maintaining gut health while also posing risks under certain circumstances. Interactions with Surroundings: The organism exhibits symbiotic relationships with other gut microbiota, contributing to the balance of microbial populations. It can influence the metabolism of other bacteria and may produce metabolites that affect the host's immune response. Additionally, S. gallolyticus has been implicated in certain diseases, such as endocarditis, indicating its potential pathogenicity when the host's defenses are compromised. Overall, Streptococcus gallolyticus exemplifies the complex interactions within the gastrointestinal biome, showcasing both its beneficial roles in digestion and its potential as a pathogen.

Industrial Application

Source: gpt-4o-mini-2024-07-18

The microorganism Streptococcus gallolyticus has shown potential in various industrial applications, particularly in the fields of biotechnology and waste management. This organism is known for its role in fermentation, where it can be utilized in the production of certain fermented foods and beverages, contributing to flavor development and preservation. Additionally, S. gallolyticus has been studied for its ability to degrade complex organic compounds, making it a candidate for biodegradation processes in waste treatment facilities. In the realm of biofuel production, S. gallolyticus may play a role in the conversion of biomass into bioethanol through fermentation, utilizing its metabolic pathways to efficiently convert sugars into alcohol. Furthermore, its enzymatic activity can be harnessed for the breakdown of lignocellulosic materials, which is crucial for enhancing the yield of biofuels from plant materials. In pharmaceutical development, S. gallolyticus has been investigated for its potential in producing bioactive compounds that could serve as precursors for antibiotic synthesis or other therapeutic agents. Its ability to produce specific enzymes may also be leveraged in the development of novel drugs or in the enhancement of drug delivery systems. Overall, Streptococcus gallolyticus presents a multifaceted opportunity for innovation across several industries, particularly in sustainable practices and the development of new biotechnological solutions.

Phenotypes and Predictions

The table shows the phenotypes and predictions. Cell colors indicate the class of the value. When literature-based data is available, a checkmark (✓) indicates a correct prediction, while an ✗ indicates an incorrect prediction.

Literature-based phenotypes: 9

LLM predicted phenotypes: 4

Phenotype	High-quality annotation	anthropic/claude-3.5-sonnet	google/gemini-flash-1.5	meta-llama/llama-3-70b-instruct:nitro	perplexity/llama-3-sonar-small-32k-chat	anthropic/claude-3-haiku:beta	openai/gpt-4	openai/gpt-4	mistralai/mistral-7b-instruct	google/gemini-pro	openchat/openchat-7b	openai/gpt-3.5-turbo-0125	openai/gpt-3.5-turbo-0125	microsoft/wizardlm-2-8x22b	microsoft/wizardlm-2-8x22b	microsoft/phi-3-mini-128k-instruct	openai/gpt-4o	openai/gpt-4o	meta-llama/llama-3-8b-instruct:nitro	meta-llama/llama-3-8b-instruct:nitro	google/gemini-pro-1.5	google/gemini-pro-1.5	google/palm-2-chat-bison-32k	google/palm-2-chat-bison-32k	mistralai/mixtral-8x7b-instruct:nitro	mistralai/mixtral-8x7b-instruct:nitro	google/gemma-7b-it	google/gemma-7b-it
Motility	FALSE	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	true ✗	true ✗
Gram staining	gram stain positive	gram stain positive ✓	gram stain positive ✓	gram stain positive ✓	gram stain positive ✓	gram stain positive ✓	N/A	gram stain positive ✓	gram stain positive ✓	gram stain positive ✓	gram stain positive ✓	N/A	gram stain positive ✓	N/A	gram stain positive ✓	gram stain negative ✗	N/A	gram stain positive ✓	N/A	gram stain positive ✓	N/A	gram stain positive ✓	N/A	gram stain positive ✓	N/A	gram stain positive ✓	N/A	gram stain negative ✗
Aerophilicity	facultatively anaerobic	facultatively anaerobic ✓	facultatively anaerobic ✓	facultatively anaerobic ✓	N/A	N/A	facultatively anaerobic ✓	facultatively anaerobic ✓	aerotolerant ✗	N/A	N/A	facultatively anaerobic ✓	facultatively anaerobic ✓	aerotolerant ✗	aerotolerant ✗	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Extreme environment tolerance	FALSE	false ✓	false ✓	false ✓	false ✓	true ✗	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	true ✗	true ✗
Biofilm formation	N/A	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true
Animal pathogenicity	TRUE	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓
Biosafety level	biosafety level 2	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓
Health association	N/A	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true
Host association	TRUE	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	false ✗	false ✗
Plant pathogenicity	FALSE	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓
Spore formation	N/A	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false
Hemolysis	N/A	beta	alpha	beta	beta	alpha	alpha	alpha	N/A	gamma	beta	gamma	gamma	beta	beta	N/A	alpha	alpha	beta	beta	alpha	alpha	N/A	N/A	N/A	N/A	N/A	N/A
Cell shape	coccus	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	coccus ✓	bacillus ✗	bacillus ✗

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