GapMind for catabolism of small carbon sources


Finding step bgtA for L-aspartate catabolism in Marinobacter adhaerens HP15

4 candidates for bgtA: aspartate ABC transporter, ATPase component BgtA

Score Gene Description Similar to Id. Cov. Bits Other hit Other id. Other bits
med HP15_2193 amino-acid ABC transporter ATP-binding protein-like protein ATPase (characterized, see rationale) 63% 92% 307 ABC transporter for D-Alanine, ATPase component 76% 399.8
med HP15_2920 amino acid ABC transporter, ATP-binding protein ATPase (characterized, see rationale) 59% 92% 285.4 GluA aka CGL1950, component of Glutamate porter 63% 310.8
med HP15_3030 histidine/lysine/arginine/ornithine transporter subunit ATPase (characterized, see rationale) 47% 93% 227.6 AotP aka PA0892, component of Arginine/ornithine (but not lysine) porter 66% 334.0
med HP15_1422 amino acid ABC transporter ATP-binding protein ATPase (characterized, see rationale) 48% 92% 213.4 Amino acid ABC transporter ATP binding protein, component of Hydroxy L-proline uptake porter, HprABC 66% 320.9

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

GapMind searches the predicted proteins for candidates by using ublast (a fast alternative to protein BLAST) to find similarities to characterized proteins or by using HMMer to find similarities to enzyme models (usually from TIGRFams). For alignments to characterized proteins (from ublast), scores of 44 bits correspond to an expectation value (E) of about 0.001.

Also see fitness data for the candidates

Definition of step bgtA

Or cluster all characterized bgtA 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 (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