Prochlorococcus marinus Chisholm et al., 2001.

Introduction. The study of bacterial phylogenetics is complicated by the pervasive phenomenon of horizontal gene transfer (HGT), in which gene trees no longer reflect the vertical evolutionary history of cell division due to the incorporation of non-endogenous genes .There is still contention regarding how frequently HGT occurs in nature.

Prochlorococcus is the most abundant photosynthetic prokaryote on our planet. The extensive ecological literature on the Prochlorococcus collective (PC) is based on the assumption that it comprises one single genus comprising the species Prochlorococcus marinus, containing itself a collective of ecotypes. Ecologists adopt the distributed.

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Testing for incongruence. Three statistical tests were used to assess the degree of phylogenetic incongruence between treeclouds estimated from the sequence data: the SH-test, , the AU-test, and Ge et al.'s gamma. The SH-test and AU-test compare two or more topologies, at least one of which was derived from optimization on the sequence data in question.

Prochlorococcus marinus Two Species in One. P. marinus is an ubiquitous, free-living marine photosynthetic cyanobacterium widely used as a model system in marine ecology (Biller et al., 2014). P. marinus is abundant in surface waters and dominates phytoplankton biomass being the primary producent in the oligotrophic ocean ecosystem (Biller et.

Prochlorococcus was identified in the Pacific Ocean during 1988 (Chisholm et al., 1992).It was detected at significant concentrations in surface water near an estuary in the Mediterranean Sea during winter (Valout et al., 1990).However, its highest abundance has been observed in the surface waters of Suruga Bay during the summer between July and October (Shimada et al., 1995).

Prochlorococcus marinus CCMP1378 Prochlorococcus marinus SS12 Synechococcus sp. WH8102 Prochlorococcus marinus MIT9313 Acidobacterium capsulatum Solibacter usitatus This phylogenetic tree of life uses genome sequencing data to map the relationships between 191 different species in the three domains of life: Eukaryota, Bacteria, and Archaea.

The enrichment analysis can be computed using a pre-compiled reference, or alternatively you can provide a background set. (Note that organism-based backgrounds are available only for certain KEGG and Biocyc annotations).

The only species of the genus that has been described is Prochlorococcus marinus. Morphology. Marine cyanobacteria are to date the smallest known photosynthetic organisms; Prochlorococcus is the smallest at just 0.5 to 0.8 micrometres across. The coccoid shaped cells are non-motile and free-living.

Catalyzes the transfer of endogenously produced octanoic acid from octanoyl-acyl-carrier-protein onto the lipoyl domains of lipoate-dependent enzymes. Lipoyl-ACP can also act as a substrate although octanoyl-ACP is likely to be the physiological substrate.

Pathway i: L-homocysteine biosynthesis This protein is involved in step 1 of the subpathway that synthesizes L-homocysteine from S-adenosyl-L-homocysteine. UniRule annotation. Proteins known to be involved in this subpathway in this organism are: Adenosylhomocysteinase (ahcY)This subpathway is part of the pathway L-homocysteine biosynthesis, which is itself part of Amino-acid biosynthesis.

Podovirus P-SSP7 infects Prochlorococcus marinus, the most abundant oceanic photosynthetic microorganism. Single-particle cryo-electron microscopy yields icosahedral and asymmetrical structures of infectious P-SSP7 with 4.6-A and 9-A resolution, respectively.