GapMind for catabolism of small carbon sources

 

D-glucosamine (chitosamine) catabolism in Sphingomonas koreensis DSMZ 15582

Best path

nagX, nagF, nagEcb, nagA, nagB

Also see fitness data for the top candidates

Rules

Overview: The canonical pathway for glucosamine utilization involves glucosamine 6-phosphate as an intermediate, as in N-acetylglucosamine utilization (link). GapMind also includes two other pathways: an oxidative pathway via glucosaminate ammonia-lyase, and a transmembrane transacetylase (NagX) pathway.

40 steps (19 with candidates)

Or see definitions of steps

Step Description Best candidate 2nd candidate
nagX transmembrane glucosamine N-acetyltransferase NagX Ga0059261_1643
nagF N-acetylglucosamine phosphotransferase system, E-I, Hpr, and EII-A components (NagF) Ga0059261_1646 Ga0059261_2514
nagEcb N-acetylglucosamine phosphotransferase system, EII-CB components Ga0059261_1647
nagA N-acetylglucosamine 6-phosphate deacetylase Ga0059261_1645
nagB glucosamine 6-phosphate deaminase (isomerizing) Ga0059261_1644 Ga0059261_3665
Alternative steps:
AO353_21710 glucosaminate ABC transporter, substrate-binding component
AO353_21715 glucosaminate ABC transporter, permease component 1
AO353_21720 glucosaminate ABC transporter, permease component 2
AO353_21725 glucosaminate ABC transporter, ATPase component Ga0059261_0341 Ga0059261_0562
crr N-acetylglucosamine phosphotransferase system, EII-A component Crr Ga0059261_1646
gamP glucosamine PTS system, EII-CBA components (GamP/NagE) Ga0059261_1647
gdh quinoprotein glucose dehydrogenase
glc-kinase glucosamine kinase Ga0059261_0355 Ga0059261_4061
glucosaminate-lyase glucosaminate ammonia-lyase Ga0059261_4182 Ga0059261_0156
kdgA 2-keto-3-deoxygluconate-6-phosphate aldolase EC:4.1.2.14 Ga0059261_0356 Ga0059261_1625
kdgK 2-keto-3-deoxygluconate kinase Ga0059261_2965 Ga0059261_1055
manX glucosamine PTS system, EII-AB component ManX
manY glucosamine PTS system, EII-C component ManY
manZ glucosamine PTS system, EII-D component ManZ
nag3 N-acetylglucosamine transporter nag3/nag4
nagEcba N-acetylglucosamine phosphotransferase system, EII-CBA components Ga0059261_1647
nagEIIA N-acetylglucosamine phosphotransferase system, EII-A component (PtsG/YpqE/GamP) Ga0059261_1647 Ga0059261_1646
nagK N-acetylglucosamine kinase Ga0059261_0355
nagP N-acetylglucosamine transporter NagP
nagPcb N-acetylglucosamine phosphotransferase system, EII-CB component NagP Ga0059261_1647
ngcE N-acetylglucosamine ABC transporter, substrate-binding component (NgcE)
ngcF N-acetylglucosamine ABC transporter, permease component 1 (NgcF)
ngcG N-acetylglucosamine ABC transporter, permease component 2 (NgcG)
ngt1 N-acetylglucosamine:H+ symporter Ngt1
ptsB N-acetylglucosamine-specific phosphotransferase system, EII-B component PtsB
ptsC N-acetylglucosamine phosphotransferase system, EII-C component PtsC Ga0059261_1647
SLC2A2 glucosamine transporter SLC2A2
SM_b21216 ABC transporter for D-Glucosamine, ATPase component Ga0059261_3668 Ga0059261_3874
SM_b21219 ABC transporter for D-Glucosamine, permease component 1
SM_b21220 ABC transporter for D-Glucosamine, permease component 2
SM_b21221 ABC transporter for D-Glucosamine, substrate-binding protein
SMc02869 N-acetylglucosamine ABC transporter, ATPase component Ga0059261_3668 Ga0059261_0562
SMc02871 N-acetylglucosamine ABC transporter, permease component 2
SMc02872 N-acetylglucosamine ABC transporter, permease component 1
SMc02873 N-acetylglucosamine ABC transporter, substrate-binding component

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.

Links

Downloads

Related tools

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