GapMind for catabolism of small carbon sources

 

Finding step TM1749 for D-mannose catabolism in Sinorhizobium meliloti 1021

4 candidates for TM1749: mannose ABC transporter, ATPase component 1

Score Gene Description Similar to Id. Cov. Bits Other hit Other id. Other bits
med SMa1371 ABC transporter ATP-binding protein TM1749, component of Probable mannose/mannoside porter. Induced by beta-mannan (Conners et al., 2005). Regulated by mannose-responsive regulator manR (characterized) 51% 98% 298.5 Putative peptide ABC transporter ATP-binding protein, component of The ABC BldKA-E (SGR_2418-2414) oligopeptide transport system. It controls aerial mycelium formation on glucose media. Probably involved in extracellular peptide signalling (Akanuma et al. 2011).  Probably orthologous to 3.A.1.5.35 50% 333.6
med SMa2081 ABC transporter ATP-binding protein TM1749, component of Probable mannose/mannoside porter. Induced by beta-mannan (Conners et al., 2005). Regulated by mannose-responsive regulator manR (characterized) 48% 98% 289.7 Putative peptide ABC transporter ATP-binding protein, component of The ABC BldKA-E (SGR_2418-2414) oligopeptide transport system. It controls aerial mycelium formation on glucose media. Probably involved in extracellular peptide signalling (Akanuma et al. 2011).  Probably orthologous to 3.A.1.5.35 51% 305.4
med SMc03125 transport system ATP-binding ABC transporter protein TM1749, component of Probable mannose/mannoside porter. Induced by beta-mannan (Conners et al., 2005). Regulated by mannose-responsive regulator manR (characterized) 46% 97% 280.4 OppD aka STM1743, component of Oligopeptide porter (also takes up amino glycoside antibiotics such as kanamycin, streptomycin and neomycin as well as cell wall-derived peptides such as murein tripeptide). It transports substrate peptides of 2-5 amino acids with highest affinity for tripeptides. Also transports δ-aminolevulinic acid (ALA). [May be regulated by PTS Enzyme INtr-aspartokinase.] ATP-binding to OppDF may result in donation of peptide to OppBC and simultaneous release of OppA 48% 298.5
med SMc02423 oligopeptide transport ATP-binding ABC transporter protein TM1749, component of Probable mannose/mannoside porter. Induced by beta-mannan (Conners et al., 2005). Regulated by mannose-responsive regulator manR (characterized) 47% 98% 277.3 Putative peptide ABC transporter ATP-binding protein, component of The ABC BldKA-E (SGR_2418-2414) oligopeptide transport system. It controls aerial mycelium formation on glucose media. Probably involved in extracellular peptide signalling (Akanuma et al. 2011).  Probably orthologous to 3.A.1.5.35 49% 299.3

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 TM1749

Or cluster all characterized TM1749 proteins

This GapMind analysis is from Sep 17 2021. The underlying query database was built on Sep 17 2021.

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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