Alignments for a candidate for gabT in Sinorhizobium meliloti 1021

GapMind for catabolism of small carbon sources

Alignments for a candidate for gabT in Sinorhizobium meliloti 1021

Align Gamma aminobutyrate transaminase 3, chloroplastic; Gamma-aminobutyrate transaminase isozyme 3; LeGABA-TP3; SlGABA-T3; EC 2.6.1.96 (characterized)
to candidate SM_b20423 SM_b20423 hypothetical protein

Query= SwissProt::Q84P52
         (520 letters)



>FitnessBrowser__Smeli:SM_b20423
          Length = 458

 Score =  364 bits (934), Expect = e-105
 Identities = 183/433 (42%), Positives = 271/433 (62%), Gaps = 9/433 (2%)

Query: 76  GWHSTDLEPL-VIQKSEGSYVYDVNGKKYLDALAGLWCTSLGGNEPRLVAAATKQLNELA 134
           G H+    P  VI   EG Y+ D++GK+ LDA AGL+C ++G    ++  A  +Q   LA
Sbjct: 24  GMHARGETPTRVIGGGEGVYITDISGKRSLDAFAGLYCVNVGYGRQKIADAIAEQAKNLA 83

Query: 135 FYHSFWNRSTKPSLDLAKELLDLFTANKMAKAFFTNSGSEANDTQVKLVWYYNNALGRPD 194
           +YH++    T+ S+ L+K ++D      M++ +F  SGS+AN+T +KL+WYYNN LGRP+
Sbjct: 84  YYHAYVGHGTEASIRLSKMIIDR-APEGMSRVYFGLSGSDANETNIKLIWYYNNILGRPE 142

Query: 195 KKKFIARTKSYHGSTLISASLSGLPALHQQFDLPAPFVLHTDCPHFWRFHQPGETEEEFS 254
           KKK I+R + YHGS +++ SL+GL   H  FDLP   +LHT+ P+++R      +EE+FS
Sbjct: 143 KKKIISRWRGYHGSGVMTGSLTGLHLFHNAFDLPRAPILHTEAPYYFRRPDRSMSEEQFS 202

Query: 255 TRLANNLENLILKEGPETIAAFIAEPVMGAGGVIPPPATYFEKVQAILKKYDILFIADEV 314
              A+ LE +IL EGP+T+AAFI EP++G GG++PPP  Y+EK+QA+L+KYDIL +ADEV
Sbjct: 203 QYCADKLEEMILAEGPDTVAAFIGEPILGTGGIVPPPKGYWEKIQAVLQKYDILLVADEV 262

Query: 315 ICGFGRLGTMFGCEKYNIKPDLVSVAKALSSGYMPIGAVLVSPEVSDVIYSQSNKLGTFS 374
           + GFGRLGTMFG + Y IKPDL+++AK L+S Y P+   +VS ++  V+   S++LG   
Sbjct: 263 VTGFGRLGTMFGSDHYGIKPDLITIAKGLTSAYAPLSGTIVSDKLWQVLVKGSDELGAIG 322

Query: 375 HGFTYSGHPVSCAVALETLKIYKERNIIEQVNRISPKFQEGL-KAFSDSPIIGEIRGTGL 433
           HG+TYS HP+  A  +  L++  E  I+E        F+  L KA  D   +GE+RG GL
Sbjct: 323 HGWTYSAHPICAAAGIANLELIDELGIVENAGSTGAYFRAELQKAVGDHRHVGEVRGDGL 382

Query: 434 LHGTEFTDNKSPNDPFPPEWGIGAYFGARCEKHGVLVRV--AGDNIMMSPPYILSLEEID 491
           +   EF +++     F P   +G    A   + GV+ R    GD +  +PP  L+ +E D
Sbjct: 383 MAAIEFVEDRDDRAFFDPGRKVGPQVAAALLERGVIGRAMPQGDILGFAPPLCLTRDEAD 442

Query: 492 ELIIKYGKALKDT 504
            ++    KA  DT
Sbjct: 443 IVV----KAAADT 451


Lambda     K      H
   0.317    0.135    0.401 

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: 628
Number of extensions: 21
Number of successful extensions: 3
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: 520
Length of database: 458
Length adjustment: 34
Effective length of query: 486
Effective length of database: 424
Effective search space:   206064
Effective search space used:   206064
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 (21.6 bits)
S2: 52 (24.6 bits)

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

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Protein sequences (fasta format)
Organisms (tab-delimited)
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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