Streptococcus mitis strain SK637

Gram-positiveCocciNon-motileFacultative anaerobe

Kingdom

Bacillati

Phylum

Bacillota

Class

Bacilli

Order

Lactobacillales

Family

Streptococcaceae

Genus

Streptococcus

Description

Streptococcus mitis strain SK637 is a Gram-positive, cocci-shaped bacterium that typically arranges itself in chains or pairs. This strain is classified as a facultative anaerobe, allowing it to thrive in both aerobic and anaerobic environments. It possesses a single membrane and is non-motile, lacking flagella despite the presence of flagella genes. It has a temperature range categorized as mesophilic, indicating it prefers moderate temperatures for growth. S. mitis strain SK637 is primarily associated with human hosts (Homo sapiens) and exhibits a free-living biotic relationship. This strain is noteworthy in clinical microbiology due to its association with several health conditions, including endocarditis, peritonitis, invasive streptococcal disease, and S. mitis meningitis. The ability of S. mitis to cause serious infections underscores its potential as a pathogenic organism within the human microbiome. Its nonsporulating nature differentiates it from other bacterial species that can survive extreme conditions through sporulation. The strain is documented in the genetic accession NZ_CP028415.1, which provides a reference for further genomic studies. Overall, the ecological role of S. mitis strain SK637 in the human body highlights the complex interactions between commensal and pathogenic bacteria, emphasizing the importance of monitoring such strains in clinical settings to prevent and manage infections effectively.

Taxonomy

KingdomBacillati
PhylumBacillota
ClassBacilli
OrderLactobacillales
FamilyStreptococcaceae
GenusStreptococcus
SpeciesStreptococcus mitis
Strainstrain SK637

Profile

Physiology
Gram staining propertiesPositive
ShapeCocci
MobilityNo
Flagellar presenceYes
Number of membranes1
Image of Streptococcus mitis strain SK637
Image source: Wikipedia/Wikimedia
Ecology, Host, and Life Cycle
Oxygen requirementsFacultative anaerobe
Optimal temperatureNot Available
Temperature rangeMesophilic
HabitatHostAssociated
Biotic relationshipFree living
Host(s)Homo sapiens
Cell arrangementChains-Pairs
SporulationNonsporulating
Energy sourceNot Available
PathogenicityNot Available

Genome Summary

Streptococcus mitis strain SK637 chromosome, complete genome.

Gene Summary

Adenine Count

574813 bp

Thymine Count

585083 bp

Guanine Count

389420 bp

Cytosine Count

392791 bp

Genome Length

1942107 bp

Protein-coding Genes

1791 genes

Non-Coding Genes

95 genes

# of Chromosomes/Plasmids

1

Genes

NameLocus TagUniProt IDStrand OrientationGene Start/EndProtein Molecular Weight
polyribonucleotide nucleotidyltransferaseSK637_RS07380Not AvailableNegative1466857 - 146907081072.0
methylenetetrahydrofolate reductaseSK637_RS07405Not AvailableNegative1470043 - 147090932144.4
5-methyltetrahydropteroyltriglutamate-- homocysteine s-methyltransferaseSK637_RS07410Not AvailableNegative1471013 - 147326284663.7
ph domain-containing proteinSK637_RS07415Not AvailableNegative1473812 - 147410510465.8
tigr02328 family proteinSK637_RS07420Not AvailableNegative1474295 - 147466014353.9
ybga family proteinSK637_RS07425Not AvailableNegative1474644 - 147504816010.9
higa family addiction module antitoxinSK637_RS07430Not AvailableNegative1475179 - 147626441538.4
type ii toxin-antitoxin system rele/pare family toxinSK637_RS07435Not AvailableNegative1476257 - 147659513157.8
type i restriction-modification system subunit mSK637_RS07440Not AvailableNegative1476726 - 147833360388.3
tigr04141 family sporadically distributed proteinSK637_RS07445Not AvailableNegative1478357 - 147996461058.8

Displaying genes 1441 – 1450 of 1886 in total

Metabolites

0 records
Metabolite IDMetabolite nameStructureCAS number
No metabolites foundTry different search terms or mass values.

Displaying 0 metabolites

Health Effects

Health ConditionRelationReference
Invasive streptococcal diseaseCausesPMC9328907
EndocarditisCausesPMC2828477
S. mitis meningitisCausesPMC2828477
EndocarditisCausesPMC3279804
PeritonitisCausesPMC7747055
Infective endocarditisCausesPMC3178606
Subacute infective endocarditisCausesPMC3178606

Displaying health effects 1 – 7 of 7 in total