Alignments for a candidate for metA in Synechococcus elongatus PCC 7942

GapMind for Amino acid biosynthesis

Alignments for a candidate for metA in Synechococcus elongatus PCC 7942

Align Homoserine O-acetyltransferase; HAT; Homoserine transacetylase; HTA; EC 2.3.1.31 (characterized)
to candidate Synpcc7942_0371 Synpcc7942_0371 homoserine O-succinyltransferase

Query= SwissProt::Q72X44
         (301 letters)



>FitnessBrowser__SynE:Synpcc7942_0371
          Length = 299

 Score =  314 bits (805), Expect = 1e-90
 Identities = 148/295 (50%), Positives = 204/295 (69%)

Query: 1   MPIIIDKDLPARKVLQEENIFVMTKERAETQDIRALKIAILNLMPTKQETEAQLLRLIGN 60
           MPIII +DLPAR++L  E++F +    A  QDIRAL++ +LNLMPTK  TE Q+ R++ N
Sbjct: 1   MPIIIPQDLPARRILDAESVFTLGDADARRQDIRALQVVVLNLMPTKVTTETQIARVLAN 60

Query: 61  TPLQLDVHLLHMESHLSRNVAQEHLTSFYKTFRDIENEKFDGLIITGAPVETLSFEEVDY 120
           TPLQ+++ L+H  S+   +   EHL +FY TF  I + +FDGLI+TGAPVETL +  VDY
Sbjct: 61  TPLQVELTLIHTASYQPTHTDPEHLRNFYSTFDQIRDRQFDGLIVTGAPVETLPWLAVDY 120

Query: 121 WEELKRIMEYSKTNVTSTLHICWGAQAGLYHHYGVQKYPLKEKMFGVFEHEVREQHVKLL 180
           W EL  I+++S+  V S+L ICWGAQA L H +G++K  L  K FGVF H +R++   L+
Sbjct: 121 WSELTTILDWSREAVRSSLFICWGAQAALQHFHGIEKQTLPAKRFGVFWHHLRDRSSPLV 180

Query: 181 QGFDELFFAPHSRHTEVRESDIREVKELTLLANSEEAGVHLVIGQEGRQVFALGHSEYSC 240
           +G D+ F  P SRHTEV  +++    +L +LA S EAG+HL+   +  + +   H EY  
Sbjct: 181 RGHDDDFLVPVSRHTEVIAAEVLAQSQLQILAESSEAGLHLLWDADQHRTYLFNHPEYDA 240

Query: 241 DTLKQEYERDRDKGLNIDVPKNYFKHDNPNEKPLVRWRSHGNLLFSNWLNYYVYQ 295
           DTL +EY RDR+KGL I +P NY+ +D+PN+ P VRWRSH  LL++NWLNY VYQ
Sbjct: 241 DTLDREYRRDREKGLPIQLPLNYYPNDDPNQVPRVRWRSHAQLLYTNWLNYEVYQ 295


Lambda     K      H
   0.319    0.136    0.403 

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: 290
Number of extensions: 6
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: 301
Length of database: 299
Length adjustment: 27
Effective length of query: 274
Effective length of database: 272
Effective search space:    74528
Effective search space used:    74528
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 (21.7 bits)
S2: 48 (23.1 bits)

Align candidate Synpcc7942_0371 Synpcc7942_0371 (homoserine O-succinyltransferase)
to HMM TIGR01001 (metA: homoserine O-succinyltransferase (EC 2.3.1.46))

# 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/TIGR01001.hmm
# target sequence database:        /tmp/gapView.27097.genome.faa
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Query:       TIGR01001  [M=301]
Accession:   TIGR01001
Description: metA: homoserine O-succinyltransferase
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
    ------- ------ -----    ------- ------ -----   ---- --  --------                                 -----------
   3.5e-118  380.5   0.0   4.1e-118  380.3   0.0    1.0  1  lcl|FitnessBrowser__SynE:Synpcc7942_0371  Synpcc7942_0371 homoserine O-suc


Domain annotation for each sequence (and alignments):
>> lcl|FitnessBrowser__SynE:Synpcc7942_0371  Synpcc7942_0371 homoserine O-succinyltransferase
   #    score  bias  c-Evalue  i-Evalue hmmfrom  hmm to    alifrom  ali to    envfrom  env to     acc
 ---   ------ ----- --------- --------- ------- -------    ------- -------    ------- -------    ----
   1 !  380.3   0.0  4.1e-118  4.1e-118       1     294 [.       1     295 [.       1     298 [. 0.99

  Alignments for each domain:
  == domain 1  score: 380.3 bits;  conditional E-value: 4.1e-118
                                 TIGR01001   1 mpirvpdelpavellkeenifvmtekrashqdirplevlilnlmpkkietenqllrllsnsplqvditl 69 
                                               mpi++p++lpa  +l  e++f ++   a+ qdir l+v++lnlmp k+ te+q+ r+l+n+plqv++tl
  lcl|FitnessBrowser__SynE:Synpcc7942_0371   1 MPIIIPQDLPARRILDAESVFTLGDADARRQDIRALQVVVLNLMPTKVTTETQIARVLANTPLQVELTL 69 
                                               9******************************************************************** PP

                                 TIGR01001  70 lridsrkskntpiehlekfykeleevkdrkfdGlivtGapvellefedvayweelkeilewskenvtst 138
                                               +++ s+++ +t  ehl++fy ++++++dr+fdGlivtGapve l++  v+yw el+ il+ws+e v s+
  lcl|FitnessBrowser__SynE:Synpcc7942_0371  70 IHTASYQPTHTDPEHLRNFYSTFDQIRDRQFDGLIVTGAPVETLPWLAVDYWSELTTILDWSREAVRSS 138
                                               ********************************************************************* PP

                                 TIGR01001 139 lyicwaaqaalkllygipkrtleeklsGvykhdiv.kedlllrgfddkflaphsryadldeeliaeltd 206
                                               l+icw+aqaal+ ++gi+k+tl+ k +Gv+ h+   ++++l+rg+dd fl+p sr++++ ++++ + ++
  lcl|FitnessBrowser__SynE:Synpcc7942_0371 139 LFICWGAQAALQHFHGIEKQTLPAKRFGVFWHHLRdRSSPLVRGHDDDFLVPVSRHTEVIAAEVLAQSQ 207
                                               **********************************98999****************************** PP

                                 TIGR01001 207 leilaesdeagvylaaskdernifvtGhpeydketlrqeyvrdvgeglkvdipknyypkddpektpias 275
                                               l+ilaes eag +l+   d+++ ++  hpeyd++tl  ey rd ++gl ++ p nyyp+ddp++ p++ 
  lcl|FitnessBrowser__SynE:Synpcc7942_0371 208 LQILAESSEAGLHLLWDADQHRTYLFNHPEYDADTLDREYRRDREKGLPIQLPLNYYPNDDPNQVPRVR 276
                                               ********************************************************************* PP

                                 TIGR01001 276 wrshanllfanwlnyavyq 294
                                               wrsha+ll++nwlny vyq
  lcl|FitnessBrowser__SynE:Synpcc7942_0371 277 WRSHAQLLYTNWLNYEVYQ 295
                                               ******************9 PP



Internal pipeline statistics summary:
-------------------------------------
Query model(s):                            1  (301 nodes)
Target sequences:                          1  (299 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: 00:00:00.01
# Mc/sec: 6.37
//
[ok]

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

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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
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