Aligments for a candidate for pcaC in Sinorhizobium meliloti 1021

GapMind for catabolism of small carbon sources

Aligments for a candidate for pcaC in Sinorhizobium meliloti 1021

Align 4-carboxymuconolactone decarboxylase (EC 4.1.1.44) (characterized)
to candidate SM_b20578 SM_b20578 gamma carboxymuconolactone decarboxylase

Query= BRENDA::Q6SJC5
         (136 letters)



>FitnessBrowser__Smeli:SM_b20578
          Length = 135

 Score =  162 bits (411), Expect = 1e-45
 Identities = 78/124 (62%), Positives = 95/124 (76%)

Query: 11  PTDRYTTGMDTRRRVLGDAHVDRAEACKSDFDAPFQTLITEGAWGTVWASDAISPRERSM 70
           P+ RY  GM TRR VLGD HVDRAEA  +DFD PFQ LITE AWG VW+    + RERS+
Sbjct: 7   PSGRYRQGMATRRAVLGDNHVDRAEAASTDFDRPFQELITEAAWGHVWSRAGWTKRERSI 66

Query: 71  LTLALLAATGNFEEIPMHIRATARTGASQSDVIEAFQHVAIYAGVPRANHAIRLAKETYA 130
           +T+ALLAA G  EE+ MH+RATA TGA++ D+ EA  HVAIYAGVP ANHAI++ K+ +A
Sbjct: 67  VTIALLAALGQDEEVAMHVRATANTGATREDICEALLHVAIYAGVPAANHAIKIVKQVFA 126

Query: 131 EMEA 134
           EM+A
Sbjct: 127 EMDA 130


Lambda     K      H
   0.317    0.128    0.374 

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: 89
Number of extensions: 2
Number of successful extensions: 1
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: 136
Length of database: 135
Length adjustment: 15
Effective length of query: 121
Effective length of database: 120
Effective search space:    14520
Effective search space used:    14520
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.3 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 41 (21.7 bits)
S2: 42 (20.8 bits)

Align candidate SM_b20578 SM_b20578 (gamma carboxymuconolactone decarboxylase)
to HMM TIGR02425 (pcaC: 4-carboxymuconolactone decarboxylase (EC 4.1.1.44))

# hmmsearch :: search profile(s) against a sequence database
# HMMER 3.3.1 (Jul 2020); http://hmmer.org/
# Copyright (C) 2020 Howard Hughes Medical Institute.
# Freely distributed under the BSD open source license.
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# query HMM file:                  ../tmp/path.carbon/TIGR02425.hmm
# target sequence database:        /tmp/gapView.4436.genome.faa
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Query:       TIGR02425  [M=123]
Accession:   TIGR02425
Description: decarb_PcaC: 4-carboxymuconolactone decarboxylase
Scores for complete sequences (score includes all domains):
   --- full sequence ---   --- best 1 domain ---    -#dom-
    E-value  score  bias    E-value  score  bias    exp  N  Sequence                            Description
    ------- ------ -----    ------- ------ -----   ---- --  --------                            -----------
    8.9e-64  199.3   1.5      1e-63  199.2   1.5    1.0  1  lcl|FitnessBrowser__Smeli:SM_b20578  SM_b20578 gamma carboxymuconolac


Domain annotation for each sequence (and alignments):
>> lcl|FitnessBrowser__Smeli:SM_b20578  SM_b20578 gamma carboxymuconolactone decarboxylase
   #    score  bias  c-Evalue  i-Evalue hmmfrom  hmm to    alifrom  ali to    envfrom  env to     acc
 ---   ------ ----- --------- --------- ------- -------    ------- -------    ------- -------    ----
   1 !  199.2   1.5     1e-63     1e-63       3     122 ..       9     128 ..       7     129 .. 0.98

  Alignments for each domain:
  == domain 1  score: 199.2 bits;  conditional E-value: 1e-63
                            TIGR02425   3 eryeqGlkvrravlGdahvdralaaktdfdaefqeliteaaWGtvWardglskrerslvtiallaalgreeela 76 
                                           ry+qG+++rravlGd+hvdra+aa+tdfd++fqeliteaaWG+vW+r g +krers+vtiallaalg++ee+a
  lcl|FitnessBrowser__Smeli:SM_b20578   9 GRYRQGMATRRAVLGDNHVDRAEAASTDFDRPFQELITEAAWGHVWSRAGWTKRERSIVTIALLAALGQDEEVA 82 
                                          59************************************************************************ PP

                            TIGR02425  77 lhvraaantGvteddikevllqvaiyaGvPaankalklakevlael 122
                                          +hvra+antG+t++di+e+ll+vaiyaGvPaan+a+k+ k+v+ae+
  lcl|FitnessBrowser__Smeli:SM_b20578  83 MHVRATANTGATREDICEALLHVAIYAGVPAANHAIKIVKQVFAEM 128
                                          ********************************************98 PP



Internal pipeline statistics summary:
-------------------------------------
Query model(s):                            1  (123 nodes)
Target sequences:                          1  (135 residues searched)
Passed MSV filter:                         1  (1); expected 0.0 (0.02)
Passed bias filter:                        1  (1); expected 0.0 (0.02)
Passed Vit filter:                         1  (1); expected 0.0 (0.001)
Passed Fwd filter:                         1  (1); expected 0.0 (1e-05)
Initial search space (Z):                  1  [actual number of targets]
Domain search space  (domZ):               1  [number of targets reported over threshold]
# CPU time: 0.01u 0.01s 00:00:00.02 Elapsed: 00:00:00.00
# Mc/sec: 3.66
//
[ok]

This GapMind analysis is from Sep 17 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 the paper from 2019 on GapMind for amino acid biosynthesis, the paper from 2022 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

GapMind for catabolism of small carbon sources