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On One Page

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Product(s) |

Expression|

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Standard Name	hchA
Gene Synonym(s)	ECK1963, b1967, JW1950, yedU, yzzC^[1], yzzC
Product Desc.	heat shock protein (Hsp) 31^[2]^[3]; Component of Hsp31 molecular chaperone^[3] Aminopeptidase and molecular chaperone Hsp31, heat-inducible; chaperone activity is inhibited at high temperature by ATP; homodimeric^[4]
Product Synonyms(s)	Hsp31 molecular chaperone^[1], B1967^[2]^[1], YzzC^[2]^[1], YedU^[2]^[1], HchA^[2]^[1], Hsp31^[2]^[1] , ECK1963, JW1950, yedU, yzzC, b1967
Function from GO	<GO_nr />
Knock-Out Phenotype
Regulation/Expression	transcription unit(s): hchA^[2]
Regulation/Activity
Quick Links
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Notes

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Important for the processing of 8-12mer peptides in vivo. HchA is an active site cysteine peptidase. Variously called C56 peptidase family, PfpI/HchA peptidase/chaperone family, DJ-1/PARK7 superfamily.^[4]

Gene

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Nomenclature

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See Help:Gene_nomenclature for help with entering information in the Gene Nomenclature table.

Standard name	hchA
Mnemonic	Heat-inducible CHaperone
Synonyms	ECK1963, b1967, JW1950, yedU, yzzC^[1], yzzC
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Notes

Location(s) and DNA Sequence

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<protect> See Help:Gene_location for help entering information in the Gene Location and DNA sequence table.

Strain	Map location	Genome coordinates	Genome browsers	Sequence links
MG1655	43.84 minutes	MG1655: 2033859..2034710 <gbrowseImage> name=NC_000913:2033859..2034710 source=MG1655 preset=GeneLocation </gbrowseImage>	EcoCyc GBrowse(MG1655)	FASTA Dump EcoCyc Sequence Dump
REL606		NC_012967: 1974026..1974685 <gbrowseImage> name=NC_012967:1974026..1974685 source=REL606 preset=GeneLocation </gbrowseImage>	GBrowse (REL606)	FASTA Dump
BW2952		NC_012759: 1926342..1927193 <gbrowseImage> name=NC_012759:1926342..1927193 source=BW2952 preset=GeneLocation </gbrowseImage>	GBrowse (BW2952)	FASTA Dump
W3110		W3110: 2037972..2038823 <gbrowseImage> name=NC_007779:2037972..2038823 source=W3110 preset=GeneLocation </gbrowseImage>	GBrowse(W3110)	FASTA Dump
DH10B		DH10B: 2124867..2125718 <gbrowseImage> name=NC_010473:2124867..2125718 source=DH10B preset=GeneLocation </gbrowseImage>	GBrowse(DH10B)	FASTA Dump
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Notes

Sequence Features

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See Help:Gene_sequence_features for help in entering sequence features in EcoliWiki.

Feature Type	Strain	Genomic Location	Evidence	Reference	Notes
Coding Start (SO:0000323)	MG1655	2033862	Edman degradation	PMID:8455549
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Notes

Alleles and Phenotypes

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See Help:Gene_alleles for how to enter or edit alleles and phenotypes in EcoliWiki.

Allele	Nt change(s)	AA change(s)	Phenotype: Description	Reference	Availability	Comments
ΔhchA (Keio:JW1950)	deletion	deletion		PMID:16738554	Shigen CGSC9622^[5]
hchAC185A		C185A	No proteolytic activity			seeded from UniProt:P31658
ΔhchA743::kan				PMID:16738554	CGSC:101320
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Notes

Genetic Interactions

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Interactor	Interaction	Allele	Score(s)	Reference(s)	Accessions	Notes
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Notes

Genetic Resources

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See Help:Gene_resources for help entering information into the Genetic Resources table.

Resource	Resource Type	Source	Notes/Reference
JW1950	Plasmid clone	Shigen	PMID:16769691 Status:Clone OK Primer 1:GCCACTGTTCAAACAAGTAAAAA Primer 2:CCACCCGCGTAAGCTGCCAGCAT
25D8	Kohara Phage	Genobase	PMID:3038334
uvrC279::Tn10	Linked marker	CAG12156 = CGSC7394^[5]	est. P1 cotransduction: 15% ^[6]
zed-3069::Tn10	Linked marker	CAG18451 = CGSC7395^[5]	est. P1 cotransduction: 91% ^[6]
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Notes

Accessions in Other Databases

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See Help:Gene_accessions for help with entering information into the Gene Accessions table.

Database	Accession	Notes
EcoCyc	EcoCyc:G7055	Escherichia coli str. K-12 substr. MG1655
EcoGene	EcoGene:EG11755	Escherichia coli str. K-12 substr. MG1655
RegulonDB	RegulonDB:ECK120003641	Escherichia coli str. K-12 substr. MG1655
NCBI (EcoliWiki Page)	GeneID:946481	Escherichia coli str. K-12 substr. MG1655
EchoBASE	EchoBASE:EB1705	Escherichia coli str. K-12 substr. MG1655
ASAP	ASAP:ABE-0006529	Escherichia coli str. K-12 substr. MG1655
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Notes

Links

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Name	URL	Comments
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Product(s)

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Nomenclature

See Help:Product_nomenclature for help entering or editing information in this section of EcoliWiki.

Standard name	HchA
Synonyms	Hsp31 molecular chaperone^[1], B1967^[2]^[1], YzzC^[2]^[1], YedU^[2]^[1], HchA^[2]^[1], Hsp31^[2]^[1] , ECK1963, JW1950, yedU, yzzC, b1967
Product description	heat shock protein (Hsp) 31^[2]^[3]; Component of Hsp31 molecular chaperone^[3] Aminopeptidase and molecular chaperone Hsp31, heat-inducible; chaperone activity is inhibited at high temperature by ATP; homodimeric^[4]
EC number (for enzymes)
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Notes

Function

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<protect> Gene Ontology
See Help:Gene_ontology for help entering or editing GO terms and GO annotations in EcoliWiki.

Qualifier	GO ID	GO term name	Reference	Evidence Code	with/from	Aspect	Notes	Status
	GO:0005829	cytosol	PMID:16858726	IDA: Inferred from Direct Assay		C	Seeded from EcoCyc (v14.0)	complete
	GO:0006950	response to stress	GOA:spkw SP_KW:GO_REF:0000004	IEA: Inferred from Electronic Annotation	SP_KW:KW-0346	P	Seeded from EcoCyc (v14.0)	complete
	GO:0008270	zinc ion binding	GOA:spkw SP_KW:GO_REF:0000004	IEA: Inferred from Electronic Annotation	SP_KW:KW-0862	F	Seeded from EcoCyc (v14.0)	complete
	GO:0042026	protein refolding	GOA:hamap GO_REF:0000020	IEA: Inferred from Electronic Annotation	HAMAP:MF_01046	P	Seeded from EcoCyc (v14.0)	complete
	GO:0046872	metal ion binding	GOA:spkw SP_KW:GO_REF:0000004	IEA: Inferred from Electronic Annotation	SP_KW:KW-0479	F	Seeded from EcoCyc (v14.0)	complete
	GO:0051082	unfolded protein binding	GOA:hamap GO_REF:0000020	IEA: Inferred from Electronic Annotation	HAMAP:MF_01046	F	Seeded from EcoCyc (v14.0)	complete
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Interactions See Help:Product_interactions for help entering or editing information about gene product interactions in this section of EcoliWiki.

Partner Type	Partner	Notes	References	Evidence
Protein	Subunits of Hsp31 molecular chaperone	could be indirect
Protein	tnaA		PMID:16606699	Experiment(s):EBI-1141522
Protein	nadE		PMID:16606699	Experiment(s):EBI-1141522
Protein	djlA		PMID:16606699	Experiment(s):EBI-1141522
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Notes

Localization

See Help:Product_localization for how to add or edit information in this section of EcoliWiki.

Compartment	Description	Evidence	Reference/Source	Notes
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Notes

Structure and Physical Properties

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<protect> Physical Properties See Help:Product_physical_properties for help entering or editing information about the physical properties of this gene product.

Name
Sequence	at EcoCyc MTVQTSKNPQ VDIAEDNAFF PSEYSLSQYT SPVSDLDGVD YPKPYRGKHK ILVIAADERY LPTDNGKLFS TGNHPIETLL PLYHLHAAGF EFEVATISGL MTKFEYWAMP HKDEKVMPFF EQHKSLFRNP KKLADVVASL NADSEYAAIF VPGGHGALIG LPESQDVAAA LQWAIKNDRF VISLCHGPAA FLALRHGDNP LNGYSICAFP DAADKQTPEI GYMPGHLTWY FGEELKKMGM NIINDDITGR VHKDRKLLTG DSPFAANALG KLAAQEMLAA YAG
Length	283
Mol. Wt	31.191 kDa
pI	6.0 (calculated)
Extinction coefficient	34,380 - 34,630 (calc based on 12 Y, 3 W, and 2 C residues)
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Domains/Motifs/Modification Sites

See Help:Product_domains_motifs for help entering or editing information in this section of EcoliWiki.

Type	Residues	Description	Notes	References
Initiator Methionine	1	Removed	UniProt:P31658
Domain	108..278	PF01965 DJ-1/PfpI family		PMID:19920124
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<motif_map/>

Structure
See Help:Product_structure for help entering or editing information in this section of EcoliWiki.

Structures

<beststructure> gene=hchA taxon=562,83333 </beststructure>

Models

View models at:

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Structure figures

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Notes

Gene Product Resources

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See Help:Product_resources for help with entering or editing information in this section of EcoliWiki.

Resource type	Source	Notes/Reference
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Notes

Accessions in Other Databases

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See Help:Gene_accessions for help with entering information into the Gene Accessions table.

Database	Accession	Notes
NCBI (Protein) (EcoliWiki Page)	GI:16129913	Escherichia coli str. K-12 substr. MG1655
NCBI (Protein) (EcoliWiki Page)	GeneID:946481	Escherichia coli str. K-12 substr. MG1655
ASAP	ASAP:ABE-0006529	Escherichia coli str. K-12 substr. MG1655
UniProt (EcoliWiki Page)	UniProtKB/Swiss-Prot:P31658	Escherichia coli str. K-12 substr. MG1655
EcoCyc	EcoCyc:G7055	Escherichia coli str. K-12 substr. MG1655
EcoGene	EcoGene:EG11755	Escherichia coli str. K-12 substr. MG1655
NCBI (Gene) (EcoliWiki Page)	GeneID:946481	Escherichia coli str. K-12 substr. MG1655
RegulonDB	RegulonDB:ECK120003641	Escherichia coli str. K-12 substr. MG1655
EchoBASE	EchoBASE:EB1705	Escherichia coli str. K-12 substr. MG1655
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Notes

Links

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Name	URL	Comments
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Expression

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Overview

This is a placeholder for a summary statement on how expression of this gene product is regulated. You can help EcoliWiki by becoming a user and writing/editing this statement.

Cellular Levels

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See Help:Cellular levels

Molecule	Organism or Strain	Value	Units	Experimental Conditions	Assay used	Notes	Reference(s)
Protein	E. coli K-12 MC4100	2.89E+02	molecules/cell	Medium: median data from rich and minimal media Temperature (°C): 37 Doubling time (min): Growth Rate(min): Growth phase: other:	emPAI		PMID:18304323
Protein	Ecoli K-12	31.362+/-0.569	Molecules/cell	Medium: Temperature (°C): Doubling time (min): Growth Rate(min): * Growth phase: other: *		Single Molecule Fluorescence	PMID:20671182
Protein	E. coli K-12 MG1655	335	molecules/cell/generation	Medium: MOPS Complete Temperature (°C): 37 Doubling time (min): *Growth phase: OD: other:	Ribosome Profiling		PMID: 24766808
Protein	E. coli K-12 MG1655	1879	molecules/cell/generation	Medium: MOPS Minimal Temperature (°C): 37 Doubling time (min): *Growth phase: OD: other:	Ribosome Profiling		PMID: 24766808
Protein	E. coli K-12 MG1655	178	molecules/cell/generation	Medium: MOPS Complete without Methionine Temperature (°C): 37 Doubling time (min): *Growth phase: OD: other:	Ribosome Profiling		PMID: 24766808
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Notes

Transcription and Transcriptional Regulation

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See Help:Expression_transcription for help entering or editing information in this section of EcoliWiki.

Transcription unit(s)
hchA
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Figure courtesy of RegulonDB

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Notes

This is a placeholder for a summary statement about how transcription of this gene is regulated. You can help EcoliWiki by becoming a user and writing/editing this statement.

Translation and Regulation of Translation

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<protect><gbrowseImage> name=NC_000913:2033839..2033879 source=MG1655 type=Gene+DNA_+Protein preset=Nterminus </gbrowseImage> This picture shows the sequence around the N-terminus.

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Notes

This is a placeholder for a summary statement about how translation of this gene product is regulated. You can help EcoliWiki by becoming a user and writing/editing this statement.

Turnover and Regulation of Turnover

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Notes

This is a placeholder for a summary statement about turnover of this gene product. You can help EcoliWiki by becoming a user and writing/editing this statement.

Experimental

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<protect> Mutations Affecting Expression See Help:Expression_mutations for help entering or editing information in this section of EcoliWiki.

Allele Name	Mutation	Phenotype	Reference
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Expression Studies See Help:Expression_studies for help entering or editing information in this section of EcoliWiki.

Type	Reference	Notes
microarray	GEO Profiles:b1967 (EcoliWiki Page)	NCBI GEO profiles for hchA
microarray	GenExpDB:b1967 (EcoliWiki Page)	Summary of data for hchA from multiple microarray studies
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Expression Resources See Help:Expression_resources for help entering or editing information in this section of EcoliWiki.

Resource Name	Resource Type	Description	Source	Notes
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Notes

Accessions Related to hchA Expression

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See Help:Gene_accessions for help with entering information into the Gene Accessions table.

Database	Accession	Notes
EcoCyc	EcoCyc:G7055	Escherichia coli str. K-12 substr. MG1655
EchoBASE	EchoBASE:EB1705	Escherichia coli str. K-12 substr. MG1655
EcoliGenExpDB (EcoliWiki Page)	EcoliGenExpDB:b1967
EcoGene	EcoGene:EG11755	Escherichia coli str. K-12 substr. MG1655
RegulonDB	RegulonDB:ECK120003641	Escherichia coli str. K-12 substr. MG1655
ASAP	ASAP:ABE-0006529	Escherichia coli str. K-12 substr. MG1655
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Notes

Links

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Name	URL	Comments
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Evolution

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Homologs in Other Organisms

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See Help:Evolution_homologs for help entering or editing information in this section of EcoliWiki.

Organism	Homologs (Statistics)	Comments
Schizosaccharomyces pombe	SPAC5H102c (score: 1.000; bootstrap: 100%) SPCC7573c (score: 0.561) SPBC9479 (score: 0.374) SPAC11D33 (score: 0.297) SPAC1F76 (score: 0.157)	From Inparanoid:20070104
Shigella flexneri	YEDU	From SHIGELLACYC
E. coli O157	YEDU	From ECOO157CYC
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Do-It-Yourself Web Tools

Notes

Families

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See Help:Gene_accessions for help with entering information into the Gene Accessions table.

Database	Accession	Notes
Pfam (EcoliWiki Page)	PF01965 DJ-1/PfpI family
Superfamily (EcoliWiki Page)	SUPERFAMILY:52317
EcoCyc	EcoCyc:G7055	Escherichia coli str. K-12 substr. MG1655
EcoGene	EcoGene:EG11755	Escherichia coli str. K-12 substr. MG1655
RegulonDB	RegulonDB:ECK120003641	Escherichia coli str. K-12 substr. MG1655
EchoBASE	EchoBASE:EB1705	Escherichia coli str. K-12 substr. MG1655
ASAP	ASAP:ABE-0006529	Escherichia coli str. K-12 substr. MG1655
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Notes

Links

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Name	URL	Comments
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References

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See Help:References for how to manage references in EcoliWiki.

↑ ^1.00 ^1.01 ^1.02 ^1.03 ^1.04 ^1.05 ^1.06 ^1.07 ^1.08 ^1.09 ^1.10 ^1.11 ^1.12 ^1.13 Riley, M. et al. (2006) Nucleic Acids Res 34:1-6 (corrected supplemental data from B. Wanner)
↑ ^2.00 ^2.01 ^2.02 ^2.03 ^2.04 ^2.05 ^2.06 ^2.07 ^2.08 ^2.09 ^2.10 ^2.11 ^2.12 EcoCyc (release 10.6; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
↑ ^3.0 ^3.1 ^3.2 ^3.3 EcoCyc (release 11.1; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
↑ ^4.0 ^4.1 ^4.2 EcoGene: Rudd, KE (2000) EcoGene: a genome sequence database for Escherichia coli K-12. Nucleic Acids Res 28:60-4.
↑ ^5.0 ^5.1 ^5.2 CGSC: The Coli Genetics Stock Center
↑ ^6.0 ^6.1 The Tn10 insertion sites determined by Nichols et al. 1998 (PMID:9829956) were reannotated by alignment with E. coli K-12 genome sequence (GenBank accession NC_000913). P1 contransduction frequencies were calculated using the formula of Wu (PMID:5338813).

hchA:On One Page

Quickview

Notes

Gene

Nomenclature

Notes

Location(s) and DNA Sequence

Notes

Sequence Features

Notes

Alleles and Phenotypes

Notes

Genetic Interactions

Notes

Genetic Resources

Notes

Accessions in Other Databases

Notes

Links

Product(s)

Nomenclature

Notes

Function

Notes

Localization

Notes

Structure and Physical Properties

Structure figures

Notes

Gene Product Resources

Notes

Accessions in Other Databases

Notes

Links

Expression

Overview

Cellular Levels

Notes

Transcription and Transcriptional Regulation

Notes

Translation and Regulation of Translation

Notes

Turnover and Regulation of Turnover

Notes

Experimental

Notes

Accessions Related to hchA Expression

Notes

Links

Evolution

Homologs in Other Organisms

Do-It-Yourself Web Tools

Notes

Families

Notes

Links

References

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