GapMind for catabolism of small carbon sources


propionate catabolism in Paraburkholderia bryophila 376MFSha3.1

Best path

mctP, prpE, prpC, acnD, prpF, acn, prpB

Also see fitness data for the top candidates


Overview: Propionate degradation in GapMind is based on MetaCyc pathways for the 2-methylcitrate cycle (link, link) and for propanoyl-CoA degradation (link, link).

24 steps (20 with candidates)

Or see definitions of steps

Step Description Best candidate 2nd candidate
mctP propionate permease H281DRAFT_03156 H281DRAFT_00283
prpE propionyl-CoA synthetase H281DRAFT_04953 H281DRAFT_04471
prpC 2-methylcitrate synthase H281DRAFT_06634 H281DRAFT_06327
acnD 2-methylcitrate dehydratase (2-methyl-trans-aconitate forming) H281DRAFT_02981 H281DRAFT_06210
prpF methylaconitate isomerase H281DRAFT_02982 H281DRAFT_01376
acn (2R,3S)-2-methylcitrate dehydratase H281DRAFT_02981 H281DRAFT_06606
prpB 2-methylisocitrate lyase H281DRAFT_00580 H281DRAFT_02542
Alternative steps:
dddA 3-hydroxypropionate dehydrogenase H281DRAFT_02374 H281DRAFT_00975
epi methylmalonyl-CoA epimerase H281DRAFT_04643
hpcD 3-hydroxypropionyl-CoA dehydratase H281DRAFT_05725 H281DRAFT_02514
iolA malonate semialdehyde dehydrogenase (CoA-acylating) H281DRAFT_02373 H281DRAFT_03264
lctP propionate permease H281DRAFT_00392
mcm-large methylmalonyl-CoA mutase, large (catalytic) subunit H281DRAFT_01038 H281DRAFT_02110
mcm-small methylmalonyl-CoA mutase, small (adenosylcobamide-binding) subunit H281DRAFT_01038 H281DRAFT_02076
mcmA methylmalonyl-CoA mutase, fused catalytic and adenosylcobamide-binding components H281DRAFT_02110 H281DRAFT_01038
mctC propionate:H+ symporter
pccA propionyl-CoA carboxylase, alpha subunit H281DRAFT_01343 H281DRAFT_06283
pccA1 propionyl-CoA carboxylase, biotin carboxyl carrier subunit H281DRAFT_06283 H281DRAFT_01343
pccA2 propionyl-CoA carboxylase, biotin carboxylase subunit
pccB propionyl-CoA carboxylase, beta subunit H281DRAFT_01345
pco propanyl-CoA oxidase H281DRAFT_05174 H281DRAFT_04737
prpD 2-methylcitrate dehydratase H281DRAFT_06607
putP propionate transporter; proline:Na+ symporter
SLC5A8 sodium-coupled monocarboxylate transporter

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 17 2021. The underlying query database was built on Sep 17 2021.



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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