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Protein

Beta-galactosidase

Gene

lacZ

Organism
Klebsiella pneumoniae
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

Catalytic activityi

Hydrolysis of terminal non-reducing beta-D-galactose residues in beta-D-galactosides.UniRule annotation

Cofactori

Protein has several cofactor binding sites:
  • Mg2+UniRule annotationNote: Binds 2 magnesium ions per monomer.UniRule annotation
  • Na+UniRule annotationNote: Binds 1 sodium ion per monomer.UniRule annotation

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei103SubstrateUniRule annotation1
Metal bindingi202SodiumUniRule annotation1
Binding sitei202SubstrateUniRule annotation1
Sitei358Transition state stabilizerUniRule annotation1
Sitei392Transition state stabilizerUniRule annotation1
Metal bindingi417Magnesium 1UniRule annotation1
Metal bindingi419Magnesium 1UniRule annotation1
Active sitei462Proton donorUniRule annotation1
Metal bindingi462Magnesium 1UniRule annotation1
Binding sitei462SubstrateUniRule annotation1
Active sitei538NucleophileUniRule annotation1
Metal bindingi598Magnesium 2UniRule annotation1
Metal bindingi602Sodium; via carbonyl oxygenUniRule annotation1
Metal bindingi605SodiumUniRule annotation1
Binding sitei605SubstrateUniRule annotation1
Binding sitei1000SubstrateUniRule annotation1

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Glycosidase, Hydrolase

Keywords - Ligandi

Magnesium, Metal-binding, Sodium

Protein family/group databases

CAZyiGH2. Glycoside Hydrolase Family 2.

Names & Taxonomyi

Protein namesi
Recommended name:
Beta-galactosidaseUniRule annotation (EC:3.2.1.23UniRule annotation)
Short name:
Beta-galUniRule annotation
Alternative name(s):
LactaseUniRule annotation
Gene namesi
Name:lacZUniRule annotation
Encoded oniPlasmid pK290 Publication
OrganismiKlebsiella pneumoniae
Taxonomic identifieri573 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesEnterobacteriaceaeKlebsiella

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00003669991 – 1024Beta-galactosidaseAdd BLAST1024

Proteomic databases

PRIDEiA7KGA5.

Interactioni

Subunit structurei

Homotetramer.UniRule annotation

Structurei

3D structure databases

ProteinModelPortaliA7KGA5.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni538 – 541Substrate bindingUniRule annotation4

Sequence similaritiesi

Belongs to the glycosyl hydrolase 2 family.UniRule annotation

Family and domain databases

Gene3Di2.60.120.260. 1 hit.
2.60.40.320. 2 hits.
2.70.98.10. 1 hit.
3.20.20.80. 1 hit.
HAMAPiMF_01687. Beta_gal. 1 hit.
InterProiIPR004199. B-gal_small/dom_5.
IPR011013. Gal_mutarotase_SF_dom.
IPR008979. Galactose-bd-like.
IPR014718. GH-type_carb-bd.
IPR006101. Glyco_hydro_2.
IPR013812. Glyco_hydro_2/20_Ig-like.
IPR023232. Glyco_hydro_2_AS.
IPR023933. Glyco_hydro_2_beta_Galsidase.
IPR006103. Glyco_hydro_2_cat.
IPR023230. Glyco_hydro_2_CS.
IPR006102. Glyco_hydro_2_Ig-like.
IPR006104. Glyco_hydro_2_N.
IPR013781. Glyco_hydro_catalytic_dom.
IPR017853. Glycoside_hydrolase_SF.
IPR032312. LacZ_4.
[Graphical view]
PfamiPF02929. Bgal_small_N. 1 hit.
PF16353. DUF4981. 1 hit.
PF00703. Glyco_hydro_2. 1 hit.
PF02836. Glyco_hydro_2_C. 1 hit.
PF02837. Glyco_hydro_2_N. 1 hit.
[Graphical view]
PRINTSiPR00132. GLHYDRLASE2.
SMARTiSM01038. Bgal_small_N. 1 hit.
[Graphical view]
SUPFAMiSSF49303. SSF49303. 2 hits.
SSF49785. SSF49785. 1 hit.
SSF51445. SSF51445. 1 hit.
SSF74650. SSF74650. 1 hit.
PROSITEiPS00719. GLYCOSYL_HYDROL_F2_1. 1 hit.
PS00608. GLYCOSYL_HYDROL_F2_2. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

A7KGA5-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTMITDSLAV VLQRRDWENP GVTQLNRLAA HPPFASWRNS EEARTDRPSQ
60 70 80 90 100
ESRSLNGEWR FAWFPAPEAV PESWLERDLP DADTVIVPSN WQMHGYDAPI
110 120 130 140 150
YTNVTYPIAV NPPYVPTENP TGCYSLTFNV DESWLQEGQT RIIFDGVNSA
160 170 180 190 200
FHLWCNGRWV GYGQDSRLPS EFDLSAFLHA GENRLAVMVL RWSDGSYLED
210 220 230 240 250
QDMWRMSGIF RDVSLLHKPS TQISDFHVAT HFNDDFSRAV LEADVQMYGE
260 270 280 290 300
LRDELRVTVS LWQGETQVAS GTAPFGGEII DERGGYADHV TLRLNVENPK
310 320 330 340 350
LWSAEIPNLY RAVVELHTAD GTLIEAEACD VGFREVRIEN GLLLLNGKPL
360 370 380 390 400
LIRGVNRHEH HPLHGQVMDE QTMVQDILLM KQNNFNAVRC SHYPNHPLWY
410 420 430 440 450
TLCDHYGLYV VDEANIETHG MVPMNRLTDD PRWLPAMSER VTRMVQRDRN
460 470 480 490 500
HPSVIIWSLG NESGHGANHD ALYRWIKSVD PSRPVQYEGG GADTFATDII
510 520 530 540 550
CPMYARVDED QPFPAVPKWS IKKWLSLPGE TRPLILCEYA HAMGNSLGGF
560 570 580 590 600
AKYWQAFRQY PRLQGGFVWD WVDQSLIKYD ENGNPWSAYG GDFGDTPNDR
610 620 630 640 650
QFCMNGLVFA DRTPHPALTE AKHQQQFFQF SLSGRTIEVT SEDLFRHSDN
660 670 680 690 700
ELLHWMVALD GKPLASGEVP LDVAPQGKQL IELPELPQPE SAGQLWLTVH
710 720 730 740 750
VVQPNATTWS AAGHISAWQQ WRLAENLSVT LPSAPHAIPQ LTTSETDFCI
760 770 780 790 800
ELDNKRWQFN RQSGFLSQMW IGDKKQLLTP LRDQFTRAPL DNDIGVSEAT
810 820 830 840 850
RIDPNAWVER WKAAGHYQAE AALLQCTADT LADAVLITTV HAWQHQGKTL
860 870 880 890 900
FISRKTYRID GSGQMAITVD VEVASNTPHP ARIGLTCQLA QVAERVNWLG
910 920 930 940 950
LGPQENYPDR LTAACFDRWD LPLSDMYTPY VFPSENGLRC GTRELNYGPH
960 970 980 990 1000
QWRGDFQFNI SRYSQQQLME TSHRHLLHAE EGTWLNIDGF HMGIGGDDSW
1010 1020
SPSVSAEFHL SAGSYHYQLL WCQK
Length:1,024
Mass (Da):116,341
Last modified:September 11, 2007 - v1
Checksum:i3AC630A166F545F1
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
EF382672 Genomic DNA. Translation: ABQ02972.1.
RefSeqiWP_012477407.1. NC_010870.1.
YP_001965915.1. NC_010870.1.

Genome annotation databases

GeneIDi6383981.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
EF382672 Genomic DNA. Translation: ABQ02972.1.
RefSeqiWP_012477407.1. NC_010870.1.
YP_001965915.1. NC_010870.1.

3D structure databases

ProteinModelPortaliA7KGA5.
ModBaseiSearch...
MobiDBiSearch...

Protein family/group databases

CAZyiGH2. Glycoside Hydrolase Family 2.

Proteomic databases

PRIDEiA7KGA5.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi6383981.

Family and domain databases

Gene3Di2.60.120.260. 1 hit.
2.60.40.320. 2 hits.
2.70.98.10. 1 hit.
3.20.20.80. 1 hit.
HAMAPiMF_01687. Beta_gal. 1 hit.
InterProiIPR004199. B-gal_small/dom_5.
IPR011013. Gal_mutarotase_SF_dom.
IPR008979. Galactose-bd-like.
IPR014718. GH-type_carb-bd.
IPR006101. Glyco_hydro_2.
IPR013812. Glyco_hydro_2/20_Ig-like.
IPR023232. Glyco_hydro_2_AS.
IPR023933. Glyco_hydro_2_beta_Galsidase.
IPR006103. Glyco_hydro_2_cat.
IPR023230. Glyco_hydro_2_CS.
IPR006102. Glyco_hydro_2_Ig-like.
IPR006104. Glyco_hydro_2_N.
IPR013781. Glyco_hydro_catalytic_dom.
IPR017853. Glycoside_hydrolase_SF.
IPR032312. LacZ_4.
[Graphical view]
PfamiPF02929. Bgal_small_N. 1 hit.
PF16353. DUF4981. 1 hit.
PF00703. Glyco_hydro_2. 1 hit.
PF02836. Glyco_hydro_2_C. 1 hit.
PF02837. Glyco_hydro_2_N. 1 hit.
[Graphical view]
PRINTSiPR00132. GLHYDRLASE2.
SMARTiSM01038. Bgal_small_N. 1 hit.
[Graphical view]
SUPFAMiSSF49303. SSF49303. 2 hits.
SSF49785. SSF49785. 1 hit.
SSF51445. SSF51445. 1 hit.
SSF74650. SSF74650. 1 hit.
PROSITEiPS00719. GLYCOSYL_HYDROL_F2_1. 1 hit.
PS00608. GLYCOSYL_HYDROL_F2_2. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiBGAL2_KLEPN
AccessioniPrimary (citable) accession number: A7KGA5
Entry historyi
Integrated into UniProtKB/Swiss-Prot: March 24, 2009
Last sequence update: September 11, 2007
Last modified: November 30, 2016
This is version 45 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Plasmid

Documents

  1. Glycosyl hydrolases
    Classification of glycosyl hydrolase families and list of entries
  2. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.