Alignments for a candidate for glpF in Shewanella oneidensis MR-1

GapMind for catabolism of small carbon sources

Alignments for a candidate for glpF in Shewanella oneidensis MR-1

Align Hg2+-inhibitable aquaporin, AqpM (transports both water and glycerol as well as CO2) (Kozono et al., 2003; Araya-Secchi et al., 2011). Its 3-d structure has been determined to 1.7 Å. In AqpM, isoleucine replaces a key histidine residue found in the lumen of water channels, which becomes a glycine residue in aquaglyceroporins. As a result of this and other side-chain substituents in the walls of the channel, the channel is intermediate in size and exhibits differentially tuned electrostatics when compared with the other subfamilies (characterized)
to candidate 200482 SO1307 aquaporin Z (NCBI ptt file)

Query= TCDB::Q9C4Z5
         (246 letters)



>FitnessBrowser__MR1:200482
          Length = 229

 Score =  149 bits (375), Expect = 6e-41
 Identities = 94/249 (37%), Positives = 138/249 (55%), Gaps = 29/249 (11%)

Query: 4   LTKRCIAEFIGTFILVFFGAGSAAVTLMIASGGTSPNPFNIGIGLLGGLGDWVAIGLAFG 63
           ++++  AEF+GT  LV  G GSA +               +GIGLLG       + LAFG
Sbjct: 1   MSQKMAAEFLGTLWLVLGGCGSAVLAAAFPE---------VGIGLLG-------VSLAFG 44

Query: 64  FAIAASIYALGNISGCHINPAVTIGLWSVKKFPGREVVPYIIAQLLGAAFGS-FIFLQCA 122
             +    +A+G+ISGCH+NPAV+ GLW+  +FP  E++PYIIAQ+ G   G+  ++L  +
Sbjct: 45  LTVLTMAFAIGHISGCHLNPAVSFGLWAGGRFPTSELLPYIIAQVAGGIAGAGVLYLIAS 104

Query: 123 G------IGAATVGGLGATAPFPGISYWQAMLAEVVGTFLLMITIMGIAVDERAPKGFAG 176
           G             G G  +P  G S    M+ E+V T   ++ I+G + DERAPKGFA 
Sbjct: 105 GQEGFSLAAGFASNGFGEHSP-GGYSMISVMICEIVMTLFFLLVILG-STDERAPKGFAP 162

Query: 177 IIIGLTVAGIITTLGNISGSSLNPARTFGPYLNDMIFAGTDLWNYYSIYVIGPIVGAVLA 236
           I IGL +  I      IS +S+NPAR+ GP L    +A + LW +++     PI+GA+LA
Sbjct: 163 IAIGLCLTLIHLISIPISNTSVNPARSTGPALFVGDWAVSQLWLFWA----APIIGAILA 218

Query: 237 ALTYQYLTS 245
            + Y+Y  +
Sbjct: 219 GVIYRYFNA 227


Lambda     K      H
   0.326    0.144    0.441 

Gapped
Lambda     K      H
   0.267   0.0410    0.140 


Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 1
Number of Hits to DB: 221
Number of extensions: 15
Number of successful extensions: 6
Number of sequences better than 1.0e-02: 1
Number of HSP's gapped: 1
Number of HSP's successfully gapped: 1
Length of query: 246
Length of database: 229
Length adjustment: 23
Effective length of query: 223
Effective length of database: 206
Effective search space:    45938
Effective search space used:    45938
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 15 ( 7.0 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 40 (21.6 bits)
S2: 46 (22.3 bits)

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

Downloads

Candidates (tab-delimited)
Steps (tab-delimited)
Rules (tab-delimited)
Protein sequences (fasta format)
Organisms (tab-delimited)
SQLite3 databases

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 (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:

the paper from 2019 on GapMind for amino acid biosynthesis
the paper from 2022 on GapMind for carbon sources
the source code
instructions for running GapMind on your computer

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

GapMind for catabolism of small carbon sources