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UniProtKB - P0A722 (LPXA_ECOLI)

Protein

Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase

Gene

lpxA

Organism
Escherichia coli (strain K12)
Status
Reviewed-Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the ‘protein existence’ evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Involved in the biosynthesis of lipid A, a phosphorylated glycolipid that anchors the lipopolysaccharide to the outer membrane of the cell.

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">'Function'</a> section describes the metabolic pathway(s) associated with a protein.<p><a href='/help/pathway' target='_top'>More...</a></p>Pathwayi: lipid IV(A) biosynthesis

This protein is involved in step 1 of the subpathway that synthesizes lipid IV(A) from (3R)-3-hydroxytetradecanoyl-[acyl-carrier-protein] and UDP-N-acetyl-alpha-D-glucosamine.UniRule annotation
Proteins known to be involved in the 6 steps of the subpathway in this organism are:
  1. Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase (lpxA)
  2. UDP-3-O-acyl-N-acetylglucosamine deacetylase (lpxC)
  3. UDP-3-O-(3-hydroxymyristoyl)glucosamine N-acyltransferase (lpxD)
  4. UDP-2,3-diacylglucosamine hydrolase (lpxH)
  5. Lipid-A-disaccharide synthase (lpxB)
  6. Tetraacyldisaccharide 4'-kinase (lpxK)
This subpathway is part of the pathway lipid IV(A) biosynthesis, which is itself part of Glycolipid biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes lipid IV(A) from (3R)-3-hydroxytetradecanoyl-[acyl-carrier-protein] and UDP-N-acetyl-alpha-D-glucosamine, the pathway lipid IV(A) biosynthesis and in Glycolipid biosynthesis.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Function’ section describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.<p><a href='/help/binding' target='_top'>More...</a></p>Binding sitei125Substrate1
Binding sitei144Substrate1
Binding sitei161Substrate1

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

View the complete GO annotation on QuickGO ...

GO - Biological processi

View the complete GO annotation on QuickGO ...

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionAcyltransferase, Transferase
Biological processLipid A biosynthesis, Lipid biosynthesis, Lipid metabolism

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...BioCyci		EcoCyc:UDPNACETYLGLUCOSAMACYLTRANS-MONOMER
MetaCyc:UDPNACETYLGLUCOSAMACYLTRANS-MONOMER

BRENDA Comprehensive Enzyme Information System

More...BRENDAi		2.3.1.129 2026

UniPathway: a resource for the exploration and annotation of metabolic pathways

More...UniPathwayi
UPA00359;UER00477

Chemistry databases

SwissLipids knowledge resource for lipid biology

More...SwissLipidsi		SLP:000001883

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferaseUniRule annotation (EC:2.3.1.129UniRule annotation)
Short name:
UDP-N-acetylglucosamine acyltransferaseUniRule annotation
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: ‘Name’, ‘Synonyms’, ‘Ordered locus names’ and ‘ORF names’.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:lpxAUniRule annotation
Ordered Locus Names:b0181, JW0176
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiEscherichia coli (strain K12)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the ‘taxonomic identifier’ or ‘taxid’.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri83333 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiBacteria › Proteobacteria › Gammaproteobacteria › Enterobacterales › Enterobacteriaceae › Escherichia ›
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000000318 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">proteome</a> can consist of several components. <br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome
  • UP000000625 Componenti: Chromosome

Organism-specific databases

Escherichia coli strain K12 genome database

More...EcoGenei		EG10545 lpxA

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

GO - Cellular componenti

View the complete GO annotation on QuickGO ...

Keywords - Cellular componenti

Cytoplasm

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00001880461 – 262Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferaseAdd BLAST262

Proteomic databases

Encyclopedia of Proteome Dynamics

More...EPDi		P0A722

PaxDb, a database of protein abundance averages across all three domains of life

More...PaxDbi		P0A722

PRoteomics IDEntifications database

More...PRIDEi		P0A722

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction_section">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Homotrimer.UniRule annotation3 Publications

GO - Molecular functioni

View the complete GO annotation on QuickGO ...

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGrid)

More...BioGridi		4261091, 390 interactors

Database of interacting proteins

More...DIPi		DIP-48043N

Protein interaction database and analysis system

More...IntActi		P0A722, 36 interactors

STRING: functional protein association networks

More...STRINGi		316385.ECDH10B_0161

Chemistry databases

BindingDB database of measured binding affinities

More...BindingDBi		P0A722

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

Secondary structure

1262
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

Protein Model Portal of the PSI-Nature Structural Biology Knowledgebase

More...ProteinModelPortali		P0A722

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...SMRi		P0A722

Database of comparative protein structure models

More...ModBasei		Search...

MobiDB: a database of protein disorder and mobility annotations

More...MobiDBi		Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...EvolutionaryTracei		P0A722

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Family and Domains’ section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni73 – 76Substrate binding4

<p>This subsection of the ‘Family and domains’ section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the transferase hexapeptide repeat family. LpxA subfamily.UniRule annotation

Keywords - Domaini

Repeat

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...eggNOGi		ENOG4105DAF Bacteria
COG1043 LUCA

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...HOGENOMi		HOG000294326

InParanoid: Eukaryotic Ortholog Groups

More...InParanoidi		P0A722

KEGG Orthology (KO)

More...KOi		K00677

Database for complete collections of gene phylogenies

More...PhylomeDBi		P0A722

Family and domain databases

Conserved Domains Database

More...CDDi		cd03351 LbH_UDP-GlcNAc_AT, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...Gene3Di		1.20.1180.10, 1 hit

HAMAP database of protein families

More...HAMAPi		MF_00387 LpxA, 1 hit

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR029098 Acetyltransf_C
IPR037157 Acetyltransf_C_sf
IPR001451 Hexapep
IPR018357 Hexapep_transf_CS
IPR010137 Lipid_A_LpxA
IPR011004 Trimer_LpxA-like_sf

The PANTHER Classification System

More...PANTHERi		PTHR43480 PTHR43480, 1 hit

Pfam protein domain database

More...Pfami		View protein in Pfam
PF13720 Acetyltransf_11, 1 hit
PF00132 Hexapep, 2 hits

PIRSF; a whole-protein classification database

More...PIRSFi		PIRSF000456 UDP-GlcNAc_acltr, 1 hit

Superfamily database of structural and functional annotation

More...SUPFAMi		SSF51161 SSF51161, 1 hit

TIGRFAMs; a protein family database

More...TIGRFAMsi		TIGR01852 lipid_A_lpxA, 1 hit

PROSITE; a protein domain and family database

More...PROSITEi		View protein in PROSITE
PS00101 HEXAPEP_TRANSFERASES, 2 hits

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence_length">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>.<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

P0A722-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MIDKSAFVHP TAIVEEGASI GANAHIGPFC IVGPHVEIGE GTVLKSHVVV 
        60         70         80         90        100
NGHTKIGRDN EIYQFASIGE VNQDLKYAGE PTRVEIGDRN RIRESVTIHR 
       110        120        130        140        150
GTVQGGGLTK VGSDNLLMIN AHIAHDCTVG NRCILANNAT LAGHVSVDDF 
       160        170        180        190        200
AIIGGMTAVH QFCIIGAHVM VGGCSGVAQD VPPYVIAQGN HATPFGVNIE 
       210        220        230        240        250
GLKRRGFSRE AITAIRNAYK LIYRSGKTLD EVKPEIAELA ETYPEVKAFT 
       260 
DFFARSTRGL IR
Length:262
Mass (Da):28,080
Last modified:June 7, 2005 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:iB42B076F0045B44C
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti64 – 65QF → SV in AAC36918 (PubMed:3277952).Curated2
Sequence conflicti125H → D in AAC36918 (PubMed:3277952).Curated1

Natural variant

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section describes natural variant(s) of the protein sequence.<p><a href='/help/variant' target='_top'>More...</a></p>Natural varianti189G → S in strain: SM101; temperature-sensitive. 1

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...EMBLi

GenBank nucleotide sequence database

More...GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...DDBJi
Links Updated
M19334 Genomic DNA Translation: AAC36918.1
U70214 Genomic DNA Translation: AAB08610.1
U00096 Genomic DNA Translation: AAC73292.1
AP009048 Genomic DNA Translation: BAA77856.2

Protein sequence database of the Protein Information Resource

More...PIRi		E64742 XUECDP

NCBI Reference Sequences

More...RefSeqi		NP_414723.1, NC_000913.3
WP_000565966.1, NZ_LN832404.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...EnsemblBacteriai		AAC73292; AAC73292; b0181
BAA77856; BAA77856; BAA77856

Database of genes from NCBI RefSeq genomes

More...GeneIDi		944849

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...KEGGi		ecj:JW0176
eco:b0181

Pathosystems Resource Integration Center (PATRIC)

More...PATRICi		fig|1411691.4.peg.2098

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M19334 Genomic DNA Translation: AAC36918.1
U70214 Genomic DNA Translation: AAB08610.1
U00096 Genomic DNA Translation: AAC73292.1
AP009048 Genomic DNA Translation: BAA77856.2
PIRiE64742 XUECDP
RefSeqiNP_414723.1, NC_000913.3
WP_000565966.1, NZ_LN832404.1

3D structure databases

Select the link destinations:

Protein Data Bank Europe

More...PDBei

Protein Data Bank RCSB

More...RCSB PDBi

Protein Data Bank Japan

More...PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1LXAX-ray2.60A1-262[»]
2AQ9X-ray1.80A1-262[»]
2JF2X-ray1.80A1-262[»]
2JF3X-ray3.00A1-262[»]
2QIAX-ray1.74A1-262[»]
2QIVX-ray1.85X1-262[»]
4J09X-ray1.90A1-262[»]
ProteinModelPortaliP0A722
SMRiP0A722
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

BioGridi4261091, 390 interactors
DIPiDIP-48043N
IntActiP0A722, 36 interactors
STRINGi316385.ECDH10B_0161

Chemistry databases

BindingDBiP0A722
SwissLipidsiSLP:000001883

Proteomic databases

EPDiP0A722
PaxDbiP0A722
PRIDEiP0A722

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAC73292; AAC73292; b0181
BAA77856; BAA77856; BAA77856
GeneIDi944849
KEGGiecj:JW0176
eco:b0181
PATRICifig|1411691.4.peg.2098

Organism-specific databases

EchoBASE - an integrated post-genomic database for E. coli

More...EchoBASEi		EB0540
EcoGeneiEG10545 lpxA

Phylogenomic databases

eggNOGiENOG4105DAF Bacteria
COG1043 LUCA
HOGENOMiHOG000294326
InParanoidiP0A722
KOiK00677
PhylomeDBiP0A722

Enzyme and pathway databases

UniPathwayi
UPA00359;UER00477

BioCyciEcoCyc:UDPNACETYLGLUCOSAMACYLTRANS-MONOMER
MetaCyc:UDPNACETYLGLUCOSAMACYLTRANS-MONOMER
BRENDAi2.3.1.129 2026

Miscellaneous databases

EvolutionaryTraceiP0A722

Protein Ontology

More...PROi		PR:P0A722

Family and domain databases

CDDicd03351 LbH_UDP-GlcNAc_AT, 1 hit
Gene3Di1.20.1180.10, 1 hit
HAMAPiMF_00387 LpxA, 1 hit
InterProiView protein in InterPro
IPR029098 Acetyltransf_C
IPR037157 Acetyltransf_C_sf
IPR001451 Hexapep
IPR018357 Hexapep_transf_CS
IPR010137 Lipid_A_LpxA
IPR011004 Trimer_LpxA-like_sf
PANTHERiPTHR43480 PTHR43480, 1 hit
PfamiView protein in Pfam
PF13720 Acetyltransf_11, 1 hit
PF00132 Hexapep, 2 hits
PIRSFiPIRSF000456 UDP-GlcNAc_acltr, 1 hit
SUPFAMiSSF51161 SSF51161, 1 hit
TIGRFAMsiTIGR01852 lipid_A_lpxA, 1 hit
PROSITEiView protein in PROSITE
PS00101 HEXAPEP_TRANSFERASES, 2 hits

ProtoNet; Automatic hierarchical classification of proteins

More...ProtoNeti		Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the ‘Entry information’ section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiLPXA_ECOLI
<p>This subsection of the ‘Entry information’ section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called ‘Primary (citable) accession number’.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P0A722
Secondary accession number(s): P10440, P78243
<p>This subsection of the ‘Entry information’ section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification (‘Last modified’). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: June 7, 2005
Last sequence update: June 7, 2005
Last modified: December 5, 2018
This is version 123 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the ‘Entry information’ section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

<p>This section contains any relevant information that doesn’t fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Reference proteome

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families
  3. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  4. Escherichia coli
    Escherichia coli (strain K12): entries and cross-references to EcoGene
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