Protein Info for b3566 in Escherichia coli BW25113

Name: xylF
Annotation: D-xylose transporter subunit (NCBI)

These analyses and tools can help you predict a protein's function, but be skeptical. For enzymes, over 10% of annotations from KEGG or SEED are probably incorrect. For other types of proteins, the error rates may be much higher. MetaCyc and Swiss-Prot have low error rates, but the best hits in these databases are often quite distant, so this protein's function may not be the same. TIGRFam has low error rates. Finally, many experimentally-characterized proteins are not in any of these databases. To find relevant papers, use PaperBLAST.

Protein Families and Features

1 50 100 150 200 250 300 330 signal peptide" amino acids 1 to 24 (24 residues), see Phobius details TIGR02634: D-xylose ABC transporter, D-xylose-binding protein" amino acids 28 to 330 (303 residues), 554.6 bits, see alignment E=3.5e-171 PF13407: Peripla_BP_4" amino acids 40 to 285 (246 residues), 212.3 bits, see alignment E=9.6e-67 PF00532: Peripla_BP_1" amino acids 48 to 253 (206 residues), 49.5 bits, see alignment E=4.2e-17

Best Hits

Swiss-Prot: 100% identical to XYLF_ECOLI: D-xylose-binding periplasmic protein (xylF) from Escherichia coli (strain K12)

KEGG orthology group: K10543, D-xylose transport system substrate-binding protein (inferred from 100% identity to eco:b3566)

MetaCyc: 100% identical to xylose ABC transporter periplasmic binding protein (Escherichia coli K-12 substr. MG1655)
ABC-33-RXN [EC: 7.5.2.10, 7.5.2.13]

Predicted SEED Role

"Xylose ABC transporter, periplasmic xylose-binding protein XylF" in subsystem Xylose utilization

Isozymes

No predicted isozymes

Use Curated BLAST to search for 7.5.2.10 or 7.5.2.13

Sequence Analysis Tools

PaperBLAST (search for papers about homologs of this protein)

Search CDD (the Conserved Domains Database, which includes COG and superfam)

Search structures

Predict protein localization: PSORTb (Gram-negative bacteria)

Predict transmembrane helices and signal peptides: Phobius

Check the current SEED with FIGfam search

Find homologs in fast.genomics or the ENIGMA genome browser

See P37387 at UniProt or InterPro

Protein Sequence (330 amino acids)

>b3566 D-xylose transporter subunit (NCBI) (Escherichia coli BW25113)
MKIKNILLTLCTSLLLTNVAAHAKEVKIGMAIDDLRLERWQKDRDIFVKKAESLGAKVFV
QSANGNEETQMSQIENMINRGVDVLVIIPYNGQVLSNVVKEAKQEGIKVLAYDRMINDAD
IDFYISFDNEKVGELQAKALVDIVPQGNYFLMGGSPVDNNAKLFRAGQMKVLKPYVDSGK
IKVVGDQWVDGWLPENALKIMENALTANNNKIDAVVASNDATAGGAIQALSAQGLSGKVA
ISGQDADLAGIKRIAAGTQTMTVYKPITLLANTAAEIAVELGNGQEPKADTTLNNGLKDV
PSRLLTPIDVNKNNIKDTVIKDGFHKESEL