SUPERFAMILY 1.75 HMM library and genome assignments server

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YceI-like superfamily

SCOP classification
Root:   SCOP hierarchy in SUPERFAMILY [ 0] (11)
Class:   All beta proteins [ 48724] (174)
Fold:   Streptavidin-like [ 50875] (8)
Superfamily:   YceI-like [ 101874]
Families:   YceI-like [ 101875] (2)

Superfamily statistics
Genomes (1,298) Uniprot 2018_03 genome PDB chains (SCOP 1.75)
Domains 2,459 25,809 2
Proteins 2,454 25,786 2

Functional annotation
General category Other
Detailed category Unknown function

Function annotation of SCOP domain superfamilies

InterPro annotation
Cross references IPR007372 SSF101874 Protein matches

This entry represents the lipid-binding protein YceI from Escherichia coli [PubMed12107143] and the polyisoprenoid-binding protein TTHA0802 from Thermus thermophilus [PubMed15741337]. Both these proteins share a common domain with an 8-stranded beta-barrel fold, which resembles the lipocalin fold, although no sequence homology exists with lipocalins. In TTHA0802, the protein binds the polyisoprenoid chain within the pore of the barrel via hydrophobic interactions [PubMed15741337]. Sequence homologues of this core structure are present in a wide range of bacteria and archaea. The crystal structures of Yce1 and TTHA0802 suggest that this family of proteins plays an important role in isoprenoid quinone metabolism and/or transport and/or storage [PubMed15741337].

InterPro database

PDBeMotif information about ligands, sequence and structure motifs
Cross references PDB entries
Ligand binding statistics
Nucleic-acid binding statistics
Occurrence of secondary structure elements
Occurrence of small 3D structural motifs

PDBeMotif resource

Jump to [ Top of page · SCOP classification · InterPro annotation · PDBeMotif links · Functional annotation ]

Internal database links

Browse genome assignments for this superfamily. The SUPERFAMILY hidden Markov model library has been used to carry out SCOP domain assignments to all genomes at the superfamily level.

Alignments of sequences to 4 models in this superfamily are available by clicking on the 'Alignments' icon above. PDB sequences less than 40% identical are shown by default, but any other sequence(s) may be aligned. Select PDB sequences, genome sequences, or paste in or upload your own sequences.

Browse and view proteins in genomes which have different domain combinations including a YceI-like domain.

Examine the distribution of domain superfamilies, or families, across the major taxonomic kingdoms or genomes within a kingdom. This gives an immediate impression of how superfamilies, or families, are restricted to certain kingdoms of life.

Explore domain occurrence network where nodes represent genomes and edges are domain architectures (shared between genomes) containing the superfamily of interest.

There are 4 hidden Markov models representing the YceI-like superfamily. Information on how the models are built, and plots showing hydrophobicity, match emmission probabilities and insertion/deletion probabilities can be inspected.

Jump to [ Top of page · SCOP classification · InterPro annotation · PDBeMotif links · Functional annotation · Internal database links ]