Alignments for a candidate for cysK in Methanobacterium lacus AL-21

GapMind for Amino acid biosynthesis

Alignments for a candidate for cysK in Methanobacterium lacus AL-21

Align Homocysteine/cysteine synthase; O-acetylserine/O-acetylhomoserine sulfhydrylase; OAS-OAH SHLase; OAS-OAH sulfhydrylase; EC 2.5.1.47; EC 2.5.1.49 (characterized)
to candidate WP_013644806.1 METBO_RS06070 O-acetylhomoserine aminocarboxypropyltransferase/cysteine synthase

Query= SwissProt::P06106
         (444 letters)



>NCBI__GCF_000191585.1:WP_013644806.1
          Length = 439

 Score =  439 bits (1128), Expect = e-127
 Identities = 221/438 (50%), Positives = 300/438 (68%), Gaps = 21/438 (4%)

Query: 7   TVQLHAGQENPGDNAHRSRAVPIYATTSYVFENSKHGSQLFGLEVPGYVYSRFQNPTSNV 66
           T+ LH GQE P D+A  SRAVPIY T+SYVF +++H + LFGL   G +Y+R  NPT++V
Sbjct: 17  TIGLHVGQEEP-DSATGSRAVPIYLTSSYVFNDTEHAANLFGLREFGNIYTRIMNPTTDV 75

Query: 67  LEERIAALEGGAAALAVSSGQAAQTLAIQGLAHTGDNIVSTSYLYGGTYNQFKISFKRFG 126
            E+R+AA+EGGA AL V+SG +A  LA+  ++  G+NIVS   LYGGTY  F  +  R G
Sbjct: 76  FEKRVAAVEGGATALGVASGMSAIFLAVLNVSELGENIVSGDNLYGGTYELFNYTLPRLG 135

Query: 127 IEARFVEGDNPEEFEKVFDERTKAVYLETIGNPKYNVPDFEKIVAIAHKHGIPVVVDNTF 186
              +FV  + PEEFE   DE+T+A+Y+E++GNPK +VPDFEK+  IAH H IP++VDNT 
Sbjct: 136 RTVKFVNSEKPEEFEAAIDEKTRAIYVESLGNPKLDVPDFEKLAKIAHDHDIPLIVDNTS 195

Query: 187 GAGGYFCQPIKYGADIVTHSATKWIGGHGTTIGGIIVDSGKFPWKDYPEKFPQFSQPAEG 246
             G    +PI YGADI   SATK+IGGHGT+IGG+IVDSGKF W +   KFPQF+ P   
Sbjct: 196 TVG--LLRPIDYGADITVISATKYIGGHGTSIGGVIVDSGKFNWGN--GKFPQFTDPDPS 251

Query: 247 YHGTIYNEAY------GNLAYIVHVRTELLRDLGPLMNPFASFLLLQGVETLSLRAERHG 300
           YHG  Y E +      GN+A+ +  R  LLRDLGP ++PF +F  LQG+ETL LR  +H 
Sbjct: 252 YHGLKYWETFGDFPGAGNIAFTIRARVVLLRDLGPALSPFNAFQFLQGLETLELRVLKHA 311

Query: 301 ENALKLAKWLEQSPYVSWVSYPGLASHSHHENAKKYLSNGFGGVLSFGVKDLPNADKETD 360
           ENALK+AK L+  P VSW++YPGL     HE A KYL  G+GG++ FG++          
Sbjct: 312 ENALKVAKHLKNHPKVSWINYPGLEEDPRHEVASKYLKGGYGGLIGFGIEGGLE------ 365

Query: 361 PFKLSGAQVVDNLKLASNLANVGDAKTLVIAPYFTTHKQLNDKEKLASGVTKDLIRVSVG 420
               SG + ++N++L S+LAN+GD+K+LVI P  TTH+QL  +E+  +GVT+D +R+S+G
Sbjct: 366 ----SGKKFIENVELFSHLANIGDSKSLVIHPASTTHQQLTREEQETTGVTEDFVRLSIG 421

Query: 421 IEFIDDIIADFQQSFETV 438
           +E ++DIIAD  Q+   +
Sbjct: 422 LEDVEDIIADIDQALSKI 439


Lambda     K      H
   0.317    0.136    0.402 

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: 593
Number of extensions: 22
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: 444
Length of database: 439
Length adjustment: 32
Effective length of query: 412
Effective length of database: 407
Effective search space:   167684
Effective search space used:   167684
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: 51 (24.3 bits)

This GapMind analysis is from Apr 10 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