Finding step thuK for trehalose catabolism in Neiella marina J221
5 candidates for thuK: trehalose ABC transporter, ATPase component ThuK
| Score | Gene | Description | Similar to | Id. | Cov. | Bits | Other hit | Other id. | Other bits |
|---|
| med | CBE68_RS16355 | sn-glycerol-3-phosphate ABC transporter ATP-binding protein UgpC | Sugar-binding transport ATP-binding protein aka MalK1 aka TT_C0211, component of The trehalose/maltose/sucrose/palatinose porter (TTC1627-9) plus MalK1 (ABC protein, shared with 3.A.1.1.24) (Silva et al. 2005; Chevance et al., 2006). The receptor (TTC1627) binds disaccharide alpha-glycosides, namely trehalose (alpha-1,1), sucrose (alpha-1,2), maltose (alpha-1,4), palatinose (alpha-1,6) and glucose (characterized) | 54% | 91% | 338.6 | Maltose-transporting ATPase (EC 3.6.3.19) | 57% | 398.7 |
| med | CBE68_RS09785 | spermidine/putrescine ABC transporter ATP-binding protein PotA | Trehalose/maltose import ATP-binding protein MalK; EC 7.5.2.1 (characterized) | 47% | 78% | 251.1 | spermidine/putrescine ABC transporter, ATP-binding protein PotA; EC 3.6.3.31 | 60% | 419.1 |
| lo | CBE68_RS13315 | ABC transporter ATP-binding protein | Trehalose/maltose import ATP-binding protein MalK; EC 7.5.2.1 (characterized) | 46% | 59% | 195.7 | 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) | 43% | 270.4 |
| lo | CBE68_RS00600 | ABC transporter ATP-binding protein | MalK; aka Sugar ABC transporter, ATP-binding protein, component of The maltose, maltotriose, mannotetraose (MalE1)/maltose, maltotriose, trehalose (MalE2) porter (Nanavati et al., 2005). For MalG1 (823aas) and MalG2 (833aas), the C-terminal transmembrane domain with 6 putative TMSs is preceded by a single N-terminal TMS and a large (600 residue) hydrophilic region showing sequence similarity to MLP1 and 2 (9.A.14; e-12 & e-7) as well as other proteins (characterized) | 37% | 58% | 159.8 | Bicarbonate transport ATP-binding protein CmpD; EC 7.6.2.- | 52% | 272.7 |
| lo | CBE68_RS10260 | ABC transporter ATP-binding protein | Trehalose import ATP-binding protein SugC; EC 7.5.2.- (characterized) | 38% | 54% | 155.6 | Nitrate import ATP-binding protein NrtD; EC 7.3.2.4 | 56% | 300.1 |
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.
Definition of step thuK
- Curated sequence P9WQI3: Trehalose import ATP-binding protein SugC; EC 7.5.2.-. PROBABLE SUGAR-TRANSPORT ATP-BINDING PROTEIN ABC TRANSPORTER SUGC, component of The trehalose-recycling ABC transporter, LpqY-SugA-SugB-SugC (essential for virulence)
- Curated sequence Q9YGA6: Trehalose/maltose import ATP-binding protein MalK; EC 7.5.2.1
- Curated sequence Q72L52: Sugar-binding transport ATP-binding protein aka MalK1 aka TT_C0211, component of The trehalose/maltose/sucrose/palatinose porter (TTC1627-9) plus MalK1 (ABC protein, shared with 3.A.1.1.24) (Silva et al. 2005; Chevance et al., 2006). The receptor (TTC1627) binds disaccharide alpha-glycosides, namely trehalose (alpha-1,1), sucrose (alpha-1,2), maltose (alpha-1,4), palatinose (alpha-1,6) and glucose
- Curated sequence Q9R9Q4: ThuK aka RB0314 aka SMB20328, component of Trehalose/maltose/sucrose porter (trehalose inducible). ABC transporter for D-Trehalose, ATPase component
- Curated sequence Q9X103: MalK; aka Sugar ABC transporter, ATP-binding protein, component of The maltose, maltotriose, mannotetraose (MalE1)/maltose, maltotriose, trehalose (MalE2) porter (Nanavati et al., 2005). For MalG1 (823aas) and MalG2 (833aas), the C-terminal transmembrane domain with 6 putative TMSs is preceded by a single N-terminal TMS and a large (600 residue) hydrophilic region showing sequence similarity to MLP1 and 2 (9.A.14; e-12 & e-7) as well as other proteins
Or cluster all characterized thuK proteins
This GapMind analysis is from Sep 24 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:
- ublast finds a hit to a characterized protein at above 40% identity and 80% coverage, and bits >= other bits+10.
- (Hits to curated proteins without experimental data as to their function are never considered high confidence.)
- HMMer finds a hit with 80% coverage of the model, and either other identity < 40 or other coverage < 0.75.
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:
- ublast finds a hit at above 40% identity and 70% coverage (ignoring otherBits).
- ublast finds a hit at above 30% identity and 80% coverage, and bits >= other bits.
- HMMer finds a hit (regardless of coverage or other bits).
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:
- our ignorance of proteins' functions,
- omissions in the gene models,
- frame-shift errors in the genome sequence, or
- the organism lacks the pathway.
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