Alignments for a candidate for trpA in Phaeobacter inhibens BS107

GapMind for Amino acid biosynthesis

Alignments for a candidate for trpA in Phaeobacter inhibens BS107

Align Tryptophan synthase alpha chain; EC 4.2.1.20 (characterized, see rationale)
to candidate GFF482 PGA1_c04930 tryptophan synthase alpha chain

Query= uniprot:M4NLA4
         (266 letters)



>FitnessBrowser__Phaeo:GFF482
          Length = 263

 Score =  215 bits (548), Expect = 7e-61
 Identities = 111/249 (44%), Positives = 156/249 (62%), Gaps = 1/249 (0%)

Query: 1   MSRIDRRFAALKAANRTGLIPFVTAGDPSPEHMVALMHALVDAGADLIELGVPFSDPMAD 60
           M+RID +FA LKAA++   + +V AGDP  +  + L+  L  AG D+IELG+PF+DPMAD
Sbjct: 1   MTRIDAKFAELKAADKKAFVAYVMAGDPDFDTSLELVKGLPAAGVDVIELGLPFTDPMAD 60

Query: 61  GPVIQHASERAIAKGVGLADVLGWVAAFRQHDADTPIVLMGYLNPIETHGYARFAGEAVQ 120
           GP IQ A +RA+  G+ L   L     FR+ D  TPIV+MGY NPI + G   F  +A +
Sbjct: 61  GPTIQLAGQRALEAGMTLQRTLDLARTFREEDNTTPIVMMGYYNPIYSRGVETFLKDAKE 120

Query: 121 AGVDGVLLVDCPLEE-SAVLQPLRDAGLQRILLAAPTTEPSRMAQLCGSAEGFLYYVSFA 179
           AG+DG+++VD P EE S +  P + AGL  I LA PTT+  R+ ++  +  GF+YYVS  
Sbjct: 121 AGIDGLIVVDLPPEEDSELCLPAQQAGLNFIRLATPTTDDKRLPRVLQNTSGFVYYVSIT 180

Query: 180 GITGAAHLSTGDIAARVADVRARAKAPVAVGFGIRDAASAKAIAGFADAVVIGSALVDRL 239
           GITGAA     ++   VA ++++   PV VGFGI     ++AIA  AD  V+GSA+V ++
Sbjct: 181 GITGAAEAEATNVGPEVARIKSQTDLPVIVGFGINTPEKSQAIASVADGAVVGSAIVSQI 240

Query: 240 AGATDAGEI 248
                 GE+
Sbjct: 241 GAGKPVGEV 249


Lambda     K      H
   0.322    0.136    0.394 

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: 219
Number of extensions: 7
Number of successful extensions: 2
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: 266
Length of database: 263
Length adjustment: 25
Effective length of query: 241
Effective length of database: 238
Effective search space:    57358
Effective search space used:    57358
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.4 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 41 (21.9 bits)
S2: 47 (22.7 bits)

Align candidate GFF482 PGA1_c04930 (tryptophan synthase alpha chain)
to HMM TIGR00262 (trpA: tryptophan synthase, alpha subunit (EC 4.2.1.20))

# 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.aa/TIGR00262.hmm
# target sequence database:        /tmp/gapView.20281.genome.faa
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Query:       TIGR00262  [M=256]
Accession:   TIGR00262
Description: trpA: tryptophan synthase, alpha subunit
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
    ------- ------ -----    ------- ------ -----   ---- --  --------                         -----------
    1.9e-84  268.6   0.1    2.2e-84  268.3   0.1    1.0  1  lcl|FitnessBrowser__Phaeo:GFF482  PGA1_c04930 tryptophan synthase 


Domain annotation for each sequence (and alignments):
>> lcl|FitnessBrowser__Phaeo:GFF482  PGA1_c04930 tryptophan synthase alpha chain
   #    score  bias  c-Evalue  i-Evalue hmmfrom  hmm to    alifrom  ali to    envfrom  env to     acc
 ---   ------ ----- --------- --------- ------- -------    ------- -------    ------- -------    ----
   1 !  268.3   0.1   2.2e-84   2.2e-84       1     236 [.       8     242 ..       8     258 .. 0.97

  Alignments for each domain:
  == domain 1  score: 268.3 bits;  conditional E-value: 2.2e-84
                         TIGR00262   1 fetlkkkeekafvpFvtagdPdleksleiiktlvkaGadalElGvpfsDPlaDGptiqaaelRAlkagvkvekalel 77 
                                       f++lk++++kafv++v agdPd+++sle++k l  aG+d++ElG+pf DP+aDGptiq a +RAl+ag++++++l+l
  lcl|FitnessBrowser__Phaeo:GFF482   8 FAELKAADKKAFVAYVMAGDPDFDTSLELVKGLPAAGVDVIELGLPFTDPMADGPTIQLAGQRALEAGMTLQRTLDL 84 
                                       7899************************************************************************* PP

                         TIGR00262  78 lkkvrekasniPivlltyynlifkkgveeFyakakeagvdgvlvaDlPleeaddlleaakkhgvkqiflvaPtaeee 154
                                       ++ +re+ ++ Piv++ yyn+i+++gve+F++ akeag+dg++v+DlP ee ++l   a++ g++ i l++Pt++++
  lcl|FitnessBrowser__Phaeo:GFF482  85 ARTFREEDNTTPIVMMGYYNPIYSRGVETFLKDAKEAGIDGLIVVDLPPEEDSELCLPAQQAGLNFIRLATPTTDDK 161
                                       ***************************************************************************** PP

                         TIGR00262 155 rlkkiaekseGfvYlvsvaGvtgarerveeevkelikkvkalskkPvlvGFGiskkeqvkelkelgadgvivGsAlv 231
                                       rl ++ ++++GfvY vs +G+tga e  +++v   ++++k+ ++ Pv+vGFGi  +e+ +++ ++ adg++vGsA+v
  lcl|FitnessBrowser__Phaeo:GFF482 162 RLPRVLQNTSGFVYYVSITGITGAAEAEATNVGPEVARIKSQTDLPVIVGFGINTPEKSQAIASV-ADGAVVGSAIV 237
                                       ***********************************************************999999.99********* PP

                         TIGR00262 232 kiiee 236
                                         i  
  lcl|FitnessBrowser__Phaeo:GFF482 238 SQIGA 242
                                       99965 PP



Internal pipeline statistics summary:
-------------------------------------
Query model(s):                            1  (256 nodes)
Target sequences:                          1  (263 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: 0.00u 0.00s 00:00:00.00 Elapsed: 00:00:00.00
# Mc/sec: 10.13
//
[ok]

This GapMind analysis is from Apr 09 2024. The underlying query database was built on Apr 09 2024.

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
changes to Amino acid biosynthesis since the publication.

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 Amino acid biosynthesis