SUPERFAMILY 1.75 HMM library and genome assignments server

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HPr-like superfamily

SCOP classification
Root:   SCOP hierarchy in SUPERFAMILY [ 0] (11)
Class:   Alpha and beta proteins (a+b) [ 53931] (376)
Fold:   HPr-like [ 55593] (2)
Superfamily:   HPr-like [ 55594]
Families:   HPr-like [ 55595] (2)


Superfamily statistics
Genomes (1,971) Uniprot 2018_03 genome PDB chains (SCOP 1.75)
Domains 3,951 30,259 19
Proteins 3,921 30,134 19


Functional annotation
General category Metabolism
Detailed category Carbohydrate metabolism and transport

Document:
Function annotation of SCOP domain superfamilies

Enzyme Commission (EC)

(show details)
EC termFDR (all)SDEO levelAnnotation (direct or inherited)
Enzyme Commission (EC)Phosphotransferases with a nitrogenous group as ac0InformativeDirect
Enzyme Commission (EC)Phosphoenolpyruvate--protein phosphotransferase0Highly InformativeDirect

Document: EC annotation of SCOP domains

Enzyme Commission (EC)

(show details)
EC termFDR (all)SDEC levelAnnotation (direct or inherited)
Enzyme Commission (EC)Transferring phosphorus-containing groups0Least InformativeDirect
Enzyme Commission (EC)Phosphotransferases with an alcohol group as acceptor0.001297Moderately InformativeInherited
Enzyme Commission (EC)Phosphotransferases with a nitrogenous group as acceptor0Highly InformativeDirect
Enzyme Commission (EC)Protein-N(pi)-phosphohistidine--D-fructose phosphotransferase0Highly InformativeDirect

Document: EC annotation of SCOP domains

InterPro annotation
Cross references IPR000032 SSF55594 Protein matches
Abstract

Phosphocarrier HPr protein, a small cytoplasmic protein, is a component of the phosphoenolpyruvate-dependent sugar phosphotransferase system (PTS) major carbohydrate transport system in bacteria [PubMed8246840, PubMed2197982]. The phosphoryl group from phosphoenolpyruvate (PEP) is transferred to HPr, the phosphoryl carrier protein, by enzyme I. Phospho-HPr then transfers it to the permease. In some bacteria HPr is a domain in a larger protein that includes a EIII(Fru) (IIA) domain and in some cases also a EI domain.

The phosphoenolpyruvate-dependent sugar phosphotransferase system (PTS) is a major carbohydrate transport system in bacteria. The PTS catalyses the phosphorylation of sugar substrates during their translocation across the cell membrane. The mechanism involves the transfer of a phosphoryl group from phosphoenolpyruvate (PEP) via enzyme I (EI) to enzyme II (EII) of the PTS system, which in turn transfers it to a phosphocarrier protein (HPr) [PubMed7853396, PubMed7704530].

There is a conserved histidine in the N-terminus of HPr, which serves as an acceptor for the phosphoryl group of EI. In the central part of HPr there is a conserved serine which, in Gram-positive bacteria only, is phosphorylated by an ATP-dependent protein kinase, a process which probably plays a regulatory role in sugar transport.


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 · Enzyme Commission (EC) · Enzyme Commission (EC) ]

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 8 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 HPr-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 8 hidden Markov models representing the HPr-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 · Enzyme Commission (EC) · Enzyme Commission (EC) · Internal database links ]