GapMind for catabolism of small carbon sources

 

Finding step proV for L-proline catabolism in Shewanella loihica PV-4

3 candidates for proV: proline ABC transporter, ATPase component ProV

Score Gene Description Similar to Id. Cov. Bits Other hit Other id. Other bits
lo Shew_0974 spermidine/putrescine ABC transporter ATPase subunit (RefSeq) Glycine betaine/proline betaine transport system ATP-binding protein ProV (characterized) 44% 57% 183.7 PotG aka B0855, component of Putrescine porter 64% 441.4
lo Shew_3164 ABC transporter-related protein (RefSeq) Glycine betaine/proline betaine transport system ATP-binding protein ProV (characterized) 37% 66% 155.6 Glutamine ABC transporter ATP-binding protein, component of Glutamine transporter, GlnQP. Takes up glutamine, asparagine and glutamate which compete for each other for binding both substrate and the transmembrane protein constituent of the system (Fulyani et al. 2015). Tandem substrate binding domains (SBDs) differ in substrate specificity and affinity, allowing cells to efficiently accumulate different amino acids via a single ABC transporter. Analysis revealed the roles of individual residues in determining the substrate affinity 62% 297.4
lo Shew_0863 ABC transporter-related protein (RefSeq) glycine betaine/l-proline transport atp-binding protein prov (characterized) 32% 70% 149.8 Putative iron transport system ATP-binding protein, component of The Fe-hydroxamate-type siderophore uptake porter (transports Fe+3 bound to ferrioxamine, ferrichrome or pyoverdine siderophores) 40% 261.5

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

Also see fitness data for the candidates

Definition of step proV

Or cluster all characterized proV proteins

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, the preprint on GapMind for carbon sources, 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