GapMind for catabolism of small carbon sources

 

L-fucose catabolism in Bacteroides thetaiotaomicron VPI-5482

Best path

fucP, fucU, fucI, fucK, fucA, tpi, fucO

Also see fitness data for the top candidates

Rules

Overview: Fucose degradation in GapMind is based on the MetaCyc pathway via L-fuculose (link) or the oxidative pathway via 2,4-diketo-3-deoxy-L-fuconate (KDF) hydrolase (PMC6336799).

23 steps (11 with candidates)

Or see definitions of steps

Step Description Best candidate 2nd candidate
fucP L-fucose:H+ symporter FucP BT1277 BT3616
fucU L-fucose mutarotase FucU BT1276 BT3666
fucI L-fucose isomerase FucI BT1273
fucK L-fuculose kinase FucK BT1275 BT3763
fucA L-fuculose-phosphate aldolase FucA BT1274
tpi triose-phosphate isomerase BT3929 BT1672
fucO L-lactaldehyde reductase BT3767
Alternative steps:
aldA lactaldehyde dehydrogenase
BPHYT_RS34240 ABC transporter for L-fucose, permease component
BPHYT_RS34245 ABC transporter for L-fucose, ATPase component
BPHYT_RS34250 ABC transporter for L-fucose, substrate-binding component
fdh L-fucose 1-dehydrogenase
fucD L-fuconate dehydratase BT0486
fucDH 2-keto-3-deoxy-L-fuconate 4-dehydrogenase BT3771 BT1911
fuconolactonase L-fucono-1,5-lactonase
HSERO_RS05250 ABC transporter for L-fucose, ATPase component
HSERO_RS05255 ABC transporter for L-fucose, permease component
HSERO_RS05260 ABC transporter for L-fucose, substrate-binding component
KDF-hydrolase 2,4-diketo-3-deoxy-L-fuconate hydrolase BT3883
SM_b21103 ABC transporter for L-fucose, substrate-binding component
SM_b21104 ABC transporter for L-fucose, permease component 1
SM_b21105 ABC transporter for L-fucose, permease component 2
SM_b21106 ABC transporter for L-fucose, ATPase component BT1291 BT1751

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 against a database of manually-curated proteins (most of which are experimentally characterized) or by using HMMer. 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. 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 the paper from 2019 on GapMind for amino acid biosynthesis, or view the source code.

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