GapMind for catabolism of small carbon sources


glycerol catabolism in Ochrobactrum thiophenivorans DSM 7216

Best path

glpF, glpK, glpD, tpi


Overview: Glycerol utilization in GapMind is based on MetaCyc pathways glycerol degradation I via glycerol kinase (link), II via dihydroxyacetone kinase (link), or V via dihydroxyacetone:PEP phosphotransferase (link). Two fermentative pathways are not included because they do not lead to carbon incorporation (link, link).

25 steps (14 with candidates)

Or see definitions of steps

Step Description Best candidate 2nd candidate
glpF glycerol facilitator glpF CEV31_RS03820 CEV31_RS02365
glpK glycerol kinase CEV31_RS03815 CEV31_RS08985
glpD glycerol 3-phosphate dehydrogenase (monomeric) CEV31_RS06600 CEV31_RS08945
tpi triose-phosphate isomerase CEV31_RS12005 CEV31_RS08925
Alternative steps:
aqp-3 glycerol porter aqp-3
dhaD glycerol dehydrogenase CEV31_RS19235 CEV31_RS19165
dhaK dihydroxyacetone:PEP phosphotransferase, subunit K CEV31_RS19220 CEV31_RS20465
dhaK' dihydroxyacetone kinase, ATP dependent (monomeric) CEV31_RS17365 CEV31_RS20365
dhaL dihydroxyacetone:PEP phosphotransferase, subunit L CEV31_RS19215 CEV31_RS20365
dhaM dihydroxyacetone:PEP phosphotransferase, subunit M
fps1 glycerol uptake/efflux facilitator protein
glpA glycerol 3-phosphate dehydrogenase subunit A
glpB glycerol 3-phosphate dehydrogenase subunit B
glpC glycerol 3-phosphate dehydrogenase subunit C
glpF' glycerol facilitator-aquaporin CEV31_RS03820
glpO glycerol 3-phosphate oxidase CEV31_RS17795 CEV31_RS08945
glpP glycerol ABC transporter, permease component 1 (GlpP)
glpQ glycerol ABC transporter, permease component 2 (GlpQ) CEV31_RS17420 CEV31_RS14430
glpS glycerol ABC transporter, ATPase component 1 (GlpS) CEV31_RS06775 CEV31_RS16725
glpT glycerol ABC transporter, ATPase component 2 (GlpT) CEV31_RS16725 CEV31_RS07190
glpV glycerol ABC transporter, substrate-binding component GlpV
PLT5 glycerol:H+ symporter PLT5
stl1 glycerol:H+ symporter Stl1p
TIPa glycerol facilitator TIPa CEV31_RS02365 CEV31_RS04475
YFL054C glycrol facilitator protein

Confidence: high confidence medium confidence low confidence
transporter – transporters and PTS systems are shaded because predicting their specificity is particularly challenging.

This GapMind analysis is from Sep 24 2021. The underlying query database was built on Sep 17 2021.



Related tools

About GapMind

Each pathway is defined by a set of rules based on individual steps or genes. Candidates for each step are identified by using ublast (a fast alternative to protein BLAST) against a database of manually-curated proteins (most of which are experimentally characterized) or by using HMMer with enzyme models (usually from TIGRFam). Ublast hits may be split across two different proteins.

A candidate for a step is "high confidence" if either:

where "other" refers to the best ublast hit to a sequence that is not annotated as performing this step (and is not "ignored").

Otherwise, a candidate is "medium confidence" if either:

Other blast hits with at least 50% coverage are "low confidence."

Steps with no high- or medium-confidence candidates may be considered "gaps." For the typical bacterium that can make all 20 amino acids, there are 1-2 gaps in amino acid biosynthesis pathways. For diverse bacteria and archaea that can utilize a carbon source, there is a complete high-confidence catabolic pathway (including a transporter) just 38% of the time, and there is a complete medium-confidence pathway 63% of the time. Gaps may be due to:

GapMind relies on the predicted proteins in the genome and does not search the six-frame translation. In most cases, you can search the six-frame translation by clicking on links to Curated BLAST for each step definition (in the per-step page).

For more information, see:

If you notice any errors or omissions in the step descriptions, or any questionable results, please let us know

by Morgan Price, Arkin group, Lawrence Berkeley National Laboratory