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Protein

Protease 3

Gene

ptrA

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

Endopeptidase that degrades small peptides of less than 7 kDa, such as glucagon and insulin.

<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

  • Preferential cleavage of 16-Tyr-|-Leu-17 and 25-Phe-|-Tyr-26 bonds of oxidized insulin B chain. Also acts on other substrates of Mw less than 7 kDa such as insulin and glucagon.PROSITE-ProRule annotation EC:3.4.24.55

<p>This subsection of the ‘Function’ section provides information relevant to cofactors. A cofactor is any non-protein substance required for a protein to be catalytically active. Some cofactors are inorganic, such as the metal atoms zinc, iron, and copper in various oxidation states. Others, such as most vitamins, are organic.<p><a href='/help/cofactor' target='_top'>More...</a></p>Cofactori

Zn2+Note: Binds 1 zinc ion per subunit.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Function’ section indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the ‘Description’ field.<p><a href='/help/metal' target='_top'>More...</a></p>Metal bindingi88ZincPROSITE-ProRule annotation1 Publication1
<p>This subsection of the ‘Function’ section is used for enzymes and indicates the residues directly involved in catalysis.<p><a href='/help/act_site' target='_top'>More...</a></p>Active sitei91Proton acceptorPROSITE-ProRule annotation2 Publications1
Metal bindingi92ZincPROSITE-ProRule annotation1 Publication1
Metal bindingi169Zinc1

<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

  • metalloendopeptidase activity Source: EcoliWiki
  • zinc ion binding Source: EcoliWiki

GO - Biological processi

<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 functionHydrolase, Metalloprotease, Protease
LigandMagnesium, Metal-binding, Zinc

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
EcoCyc:EG10786-MONOMER
MetaCyc:EG10786-MONOMER

Protein family/group databases

MEROPS protease database

More...
MEROPSi
M16.001

<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:
Protease 3 (EC:3.4.24.55)
Alternative name(s):
Pitrilysin
Protease III
Protease pi
<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:ptrA
Synonyms:ptr
Ordered Locus Names:b2821, JW2789
<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 lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesEnterobacteriaceaeEscherichia
<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
EG10786 ptrA

<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

Keywords - Cellular componenti

Periplasm

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

Mutagenesis

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/manual/pathology_and_biotech_section">'Pathology and Biotech'</a> section describes the effect of the experimental mutation of one or more amino acid(s) on the biological properties of the protein.<p><a href='/help/mutagen' target='_top'>More...</a></p>Mutagenesisi88H → R: Loss of activity and of Zn-binding. 1
Mutagenesisi91E → Q: Loss of activity. 1
Mutagenesisi92H → R: Loss of activity and of Zn-binding. 1
Mutagenesisi162E → Q: 20% loss of activity. 1
Mutagenesisi169E → Q: Loss of activity and of Zn-binding. 1
Mutagenesisi204E → Q: No loss of activity. 1

<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 denotes the presence of an N-terminal signal peptide.<p><a href='/help/signal' target='_top'>More...</a></p>Signal peptidei1 – 23Add BLAST23
<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_000002675824 – 962Protease 3Add BLAST939

Proteomic databases

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

More...
PaxDbi
P05458

PRoteomics IDEntifications database

More...
PRIDEi
P05458

<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

Monomer.

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGrid)

More...
BioGridi
4262308, 35 interactors

Protein interaction database and analysis system

More...
IntActi
P05458, 11 interactors

STRING: functional protein association networks

More...
STRINGi
316385.ECDH10B_2991

<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

1962
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
P05458

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

More...
SMRi
P05458

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
P05458

<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

<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 peptidase M16 family.Curated

Keywords - Domaini

Signal

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
ENOG4107QXK Bacteria
COG1025 LUCA

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000124324

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P05458

KEGG Orthology (KO)

More...
KOi
K01407

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P05458

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR011249 Metalloenz_LuxS/M16
IPR011765 Pept_M16_N
IPR001431 Pept_M16_Zn_BS
IPR007863 Peptidase_M16_C
IPR032632 Peptidase_M16_M

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00675 Peptidase_M16, 1 hit
PF05193 Peptidase_M16_C, 2 hits
PF16187 Peptidase_M16_M, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF63411 SSF63411, 4 hits

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00143 INSULINASE, 1 hit

<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.

<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 in its mature form or if it represents the precursor.<p><a href='/help/sequence_processing' target='_top'>More...</a></p>Sequence processingi: The displayed sequence is further processed into a mature form.

P05458-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MPRSTWFKAL LLLVALWAPL SQAETGWQPI QETIRKSDKD NRQYQAIRLD
60 70 80 90 100
NGMVVLLVSD PQAVKSLSAL VVPVGSLEDP EAYQGLAHYL EHMSLMGSKK
110 120 130 140 150
YPQADSLAEY LKMHGGSHNA STAPYRTAFY LEVENDALPG AVDRLADAIA
160 170 180 190 200
EPLLDKKYAE RERNAVNAEL TMARTRDGMR MAQVSAETIN PAHPGSKFSG
210 220 230 240 250
GNLETLSDKP GNPVQQALKD FHEKYYSANL MKAVIYSNKP LPELAKMAAD
260 270 280 290 300
TFGRVPNKES KKPEITVPVV TDAQKGIIIH YVPALPRKVL RVEFRIDNNS
310 320 330 340 350
AKFRSKTDEL ITYLIGNRSP GTLSDWLQKQ GLVEGISANS DPIVNGNSGV
360 370 380 390 400
LAISASLTDK GLANRDQVVA AIFSYLNLLR EKGIDKQYFD ELANVLDIDF
410 420 430 440 450
RYPSITRDMD YVEWLADTMI RVPVEHTLDA VNIADRYDAK AVKERLAMMT
460 470 480 490 500
PQNARIWYIS PKEPHNKTAY FVDAPYQVDK ISAQTFADWQ KKAADIALSL
510 520 530 540 550
PELNPYIPDD FSLIKSEKKY DHPELIVDES NLRVVYAPSR YFASEPKADV
560 570 580 590 600
SLILRNPKAM DSARNQVMFA LNDYLAGLAL DQLSNQASVG GISFSTNANN
610 620 630 640 650
GLMVNANGYT QRLPQLFQAL LEGYFSYTAT EDQLEQAKSW YNQMMDSAEK
660 670 680 690 700
GKAFEQAIMP AQMLSQVPYF SRDERRKILP SITLKEVLAY RDALKSGARP
710 720 730 740 750
EFMVIGNMTE AQATTLARDV QKQLGADGSE WCRNKDVVVD KKQSVIFEKA
760 770 780 790 800
GNSTDSALAA VFVPTGYDEY TSSAYSSLLG QIVQPWFYNQ LRTEEQLGYA
810 820 830 840 850
VFAFPMSVGR QWGMGFLLQS NDKQPSFLWE RYKAFFPTAE AKLRAMKPDE
860 870 880 890 900
FAQIQQAVIT QMLQAPQTLG EEASKLSKDF DRGNMRFDSR DKIVAQIKLL
910 920 930 940 950
TPQKLADFFH QAVVEPQGMA ILSQISGSQN GKAEYVHPEG WKVWENVSAL
960
QQTMPLMSEK NE
Length:962
Mass (Da):107,708
Last modified:November 1, 1988 - 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:i0558C68C2F1A0540
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 conflicti277 – 284IIIHYVPA → HYHSLRPW in AAA24436 (PubMed:3308636).Curated8

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
X04581 Genomic DNA Translation: CAA28249.1
U29581 Genomic DNA Translation: AAB40468.1
U00096 Genomic DNA Translation: AAC75860.1
AP009048 Genomic DNA Translation: BAE76890.1
X06227 Genomic DNA Translation: CAA29576.1
M17095 Genomic DNA Translation: AAA24436.1

Protein sequence database of the Protein Information Resource

More...
PIRi
F65064 SNECPI

NCBI Reference Sequences

More...
RefSeqi
NP_417298.1, NC_000913.3
WP_001138201.1, NZ_LN832404.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
AAC75860; AAC75860; b2821
BAE76890; BAE76890; BAE76890

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
947284

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ecj:JW2789
eco:b2821

Pathosystems Resource Integration Center (PATRIC)

More...
PATRICi
fig|1411691.4.peg.3915

<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
X04581 Genomic DNA Translation: CAA28249.1
U29581 Genomic DNA Translation: AAB40468.1
U00096 Genomic DNA Translation: AAC75860.1
AP009048 Genomic DNA Translation: BAE76890.1
X06227 Genomic DNA Translation: CAA29576.1
M17095 Genomic DNA Translation: AAA24436.1
PIRiF65064 SNECPI
RefSeqiNP_417298.1, NC_000913.3
WP_001138201.1, 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
1Q2LX-ray2.20A24-962[»]
ProteinModelPortaliP05458
SMRiP05458
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

BioGridi4262308, 35 interactors
IntActiP05458, 11 interactors
STRINGi316385.ECDH10B_2991

Protein family/group databases

MEROPSiM16.001

Proteomic databases

PaxDbiP05458
PRIDEiP05458

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAC75860; AAC75860; b2821
BAE76890; BAE76890; BAE76890
GeneIDi947284
KEGGiecj:JW2789
eco:b2821
PATRICifig|1411691.4.peg.3915

Organism-specific databases

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

More...
EchoBASEi
EB0779
EcoGeneiEG10786 ptrA

Phylogenomic databases

eggNOGiENOG4107QXK Bacteria
COG1025 LUCA
HOGENOMiHOG000124324
InParanoidiP05458
KOiK01407
PhylomeDBiP05458

Enzyme and pathway databases

BioCyciEcoCyc:EG10786-MONOMER
MetaCyc:EG10786-MONOMER

Miscellaneous databases

EvolutionaryTraceiP05458

Protein Ontology

More...
PROi
PR:P05458

Family and domain databases

InterProiView protein in InterPro
IPR011249 Metalloenz_LuxS/M16
IPR011765 Pept_M16_N
IPR001431 Pept_M16_Zn_BS
IPR007863 Peptidase_M16_C
IPR032632 Peptidase_M16_M
PfamiView protein in Pfam
PF00675 Peptidase_M16, 1 hit
PF05193 Peptidase_M16_C, 2 hits
PF16187 Peptidase_M16_M, 1 hit
SUPFAMiSSF63411 SSF63411, 4 hits
PROSITEiView protein in PROSITE
PS00143 INSULINASE, 1 hit

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 nameiPTRA_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: P05458
Secondary accession number(s): P78106, Q2MA16
<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: November 1, 1988
Last sequence update: November 1, 1988
Last modified: December 5, 2018
This is version 167 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. Peptidase families
    Classification of peptidase families and list of entries
  4. Escherichia coli
    Escherichia coli (strain K12): entries and cross-references to EcoGene
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