GapMind for catabolism of small carbon sources

 

L-rhamnose catabolism in Caulobacter crescentus NA1000

Best path

rhaT, rhaM, rhaA, rhaB, rhaD, tpi, aldA

Also see fitness data for the top candidates

Rules

Overview: Rhamnose utilization in GapMind is based on MetaCyc pathway I via L-rhamnulose 1-phosphate aldolase (link), pathway II via 2-keto-3-deoxy-L-rhamnonate aldolase (link), and pathway III via 2,4-diketo-3-deoxyrhamnonate hydrolase (link).

22 steps (10 with candidates)

Or see definitions of steps

Step Description Best candidate 2nd candidate
rhaT L-rhamnose:H+ symporter RhaT
rhaM L-rhamnose mutarotase
rhaA L-rhamnose isomerase
rhaB L-rhamnulokinase
rhaD rhamnulose 1-phosphate aldolase
tpi triose-phosphate isomerase CCNA_01970 CCNA_03359
aldA lactaldehyde dehydrogenase CCNA_03243 CCNA_03695
Alternative steps:
BPHYT_RS34240 L-rhamnose ABC transporter, permease component CCNA_00904
BPHYT_RS34245 L-rhamnose ABC transporter, ATPase component CCNA_00903
BPHYT_RS34250 L-rhamnose ABC transporter, substrate-binding component
Echvi_1617 L-rhamnose transporter
fucO L-lactaldehyde reductase
LRA1 L-rhamnofuranose dehydrogenase CCNA_03491 CCNA_01559
LRA2 L-rhamnono-gamma-lactonase
LRA3 L-rhamnonate dehydratase CCNA_01555
LRA4 2-keto-3-deoxy-L-rhamnonate aldolase
LRA5 2-keto-3-deoxy-L-rhamnonate 4-dehydrogenase CCNA_00545 CCNA_01747
LRA6 2,4-diketo-3-deoxyrhamnonate hydrolase
rhaP L-rhamnose ABC transporter, permease component 1 (RhaP) CCNA_00904
rhaQ L-rhamnose ABC transporter, permease component 2 (RhaQ) CCNA_00904
rhaS L-rhamnose ABC transporter, substrate-binding component RhaS
rhaT' L-rhamnose ABC transporter, ATPase component RhaT CCNA_00903

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