GapMind for catabolism of small carbon sources


D-glucosamine (chitosamine) catabolism in Pseudomonas fluorescens FW300-N2E2

Best path

gdh, AO353_21715, AO353_21720, AO353_21725, AO353_21710, glucosaminate-lyase, kdgK, kdgA

Also see fitness data for the top candidates


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 (18 with candidates)

Or see definitions of steps

Step Description Best candidate 2nd candidate
gdh quinoprotein glucose dehydrogenase Pf6N2E2_5442 Pf6N2E2_1939
AO353_21715 glucosaminate ABC transporter, permease component 1 Pf6N2E2_2052 Pf6N2E2_4281
AO353_21720 glucosaminate ABC transporter, permease component 2 Pf6N2E2_2051 Pf6N2E2_3404
AO353_21725 glucosaminate ABC transporter, ATPase component Pf6N2E2_2050 Pf6N2E2_3855
AO353_21710 glucosaminate ABC transporter, substrate-binding component Pf6N2E2_2053
glucosaminate-lyase glucosaminate ammonia-lyase Pf6N2E2_2047 Pf6N2E2_5268
kdgK 2-keto-3-deoxygluconate kinase Pf6N2E2_2046 Pf6N2E2_629
kdgA 2-keto-3-deoxygluconate-6-phosphate aldolase EC: Pf6N2E2_2883 Pf6N2E2_5976
Alternative steps:
crr N-acetylglucosamine phosphotransferase system, EII-A component Crr
gamP glucosamine PTS system, EII-CBA components (GamP/NagE)
glc-kinase glucosamine kinase Pf6N2E2_2897
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
nagA N-acetylglucosamine 6-phosphate deacetylase
nagB glucosamine 6-phosphate deaminase (isomerizing) Pf6N2E2_4217
nagEcb N-acetylglucosamine phosphotransferase system, EII-CB components
nagEcba N-acetylglucosamine phosphotransferase system, EII-CBA components
nagEIIA N-acetylglucosamine phosphotransferase system, EII-A component (PtsG/YpqE/GamP)
nagF N-acetylglucosamine phosphotransferase system, E-I, Hpr, and EII-A components (NagF) Pf6N2E2_3339 Pf6N2E2_3942
nagK N-acetylglucosamine kinase Pf6N2E2_2897
nagP N-acetylglucosamine transporter NagP
nagPcb N-acetylglucosamine phosphotransferase system, EII-CB component NagP
nagX transmembrane glucosamine N-acetyltransferase NagX
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) Pf6N2E2_1648
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
SLC2A2 glucosamine transporter SLC2A2
SM_b21216 ABC transporter for D-Glucosamine, ATPase component Pf6N2E2_2889 Pf6N2E2_807
SM_b21219 ABC transporter for D-Glucosamine, permease component 1 Pf6N2E2_1648 Pf6N2E2_808
SM_b21220 ABC transporter for D-Glucosamine, permease component 2 Pf6N2E2_1647
SM_b21221 ABC transporter for D-Glucosamine, substrate-binding protein
SMc02869 N-acetylglucosamine ABC transporter, ATPase component Pf6N2E2_807 Pf6N2E2_1649
SMc02871 N-acetylglucosamine ABC transporter, permease component 2 Pf6N2E2_1648
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.



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, 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