Align MalK; aka Sugar ABC transporter, ATP-binding protein, component of The maltose, maltotriose, mannotetraose (MalE1)/maltose, maltotriose, trehalose (MalE2) porter (Nanavati et al., 2005). For MalG1 (823aas) and MalG2 (833aas), the C-terminal transmembrane domain with 6 putative TMSs is preceded by a single N-terminal TMS and a large (600 residue) hydrophilic region showing sequence similarity to MLP1 and 2 (9.A.14; e-12 & e-7) as well as other proteins (characterized)
to candidate GFF1860 Psest_1899 ABC-type sugar transport systems, ATPase components
Query= TCDB::Q9X103 (369 letters) >lcl|FitnessBrowser__psRCH2:GFF1860 Psest_1899 ABC-type sugar transport systems, ATPase components Length = 390 Score = 352 bits (903), Expect = e-101 Identities = 187/368 (50%), Positives = 252/368 (68%), Gaps = 13/368 (3%) Query: 3 MAQVVLENVTKVYENKVVA-VKNANLVVEDKEFVVLLGPSGCGKTTTLRMIAGLEEITDG 61 MA + L NV K Y N +A +K+ L ++ EF++L+GPSGCGK+T + IAGLE IT G Sbjct: 1 MASLELRNVQKSYGNSQIATLKDIALKIDAGEFLILVGPSGCGKSTLMNCIAGLENITGG 60 Query: 62 KIYIDGKVVNDVEPKDRDIAMVFQNYALYPHMTVYENMAFGLKLRKYPKDEIDRRVREAA 121 +I +DG+ ++ PKDRDIAMVFQ+YALYP M+V +N+AFGLK+RK P +I+ V A Sbjct: 61 EILVDGEDISQASPKDRDIAMVFQSYALYPTMSVRDNIAFGLKMRKVPAAKIEEEVARVA 120 Query: 122 KILGIENLLDRKPRQLSGGQRQRVAVGRAIVRNPKVFLFDEPLSNLDAKLRVQMRSELKK 181 K+L IE LL+RKP QLSGGQ+QRVA+GRA+ R PK++LFDEPLSNLDAKLRV+MR+E+K Sbjct: 121 KLLQIEPLLERKPSQLSGGQQQRVAMGRALARRPKIYLFDEPLSNLDAKLRVEMRTEIKL 180 Query: 182 LHHRLQATIIYVTHDQVEAMTMADKIVVMKDGEIQQIGTPHEIYNSPANVFVAGFIGSPP 241 +H RL+ T +YVTHDQ+EAMT+ DK+ VMKDG IQQ GTPHEIYN+PAN+FVA FIGSPP Sbjct: 181 MHQRLKTTTVYVTHDQIEAMTLGDKVAVMKDGVIQQFGTPHEIYNNPANLFVASFIGSPP 240 Query: 242 MNFVNARVVRGEGGLWI-----QASGFKVKVPKEFEDKLANYIDKEIIFGIRPEDIYDKL 296 MNFV R +R G W+ + ++ +P +D L D+E+I GIRPE I Sbjct: 241 MNFVPLR-IRQRDGRWVGVLNSEQGSCELPLPITSDDGLR---DRELILGIRPEQIG--- 293 Query: 297 FALAPSPENTITGVVDVVEPLGSETILHVKVGDDLIVASVNPRTQAKEEQKIDLVLDMTR 356 A A S + ++ ++VVEP G +T++ + + P + + ++L D R Sbjct: 294 LAPAGSADFSLAVDIEVVEPTGPDTLVVFTLNQVKACCRLAPDQAPRVGETLNLQFDPRR 353 Query: 357 MHAFDKET 364 FD +T Sbjct: 354 ALLFDAQT 361 Lambda K H 0.319 0.138 0.387 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: 403 Number of extensions: 12 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: 369 Length of database: 390 Length adjustment: 30 Effective length of query: 339 Effective length of database: 360 Effective search space: 122040 Effective search space used: 122040 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 (21.8 bits) S2: 50 (23.9 bits)
This GapMind analysis is from Sep 17 2021. The underlying query database was built on Sep 17 2021.
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:
Otherwise, a candidate is "medium confidence" if either:
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:
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