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Entry version 71 (18 Sep 2019)
Sequence version 1 (05 Jul 2004)
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Protein

Beta-galactosidase A

Gene

lacA

Organism
Penicillium sp.
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

Cleaves beta-linked terminal galactosyl residues from gangliosides, glycoproteins, and glycosaminoglycans. Has high in vitro transglycosylation activity with p-nitrophenyl-beta-D-galactopyranoside, methyl-beta-D-galactopyranoside or lactose as a donor and galactose as an acceptor.1 Publication

<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

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> 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 sitei96SubstrateCombined sources1 Publication1
Binding sitei199SubstrateCombined sources1 Publication1
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> 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 sitei200Proton donorSequence analysis1
Active sitei299NucleophileSequence analysis1
Binding sitei365SubstrateCombined sources1 Publication1

<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

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 functionGlycosidase, Hydrolase
Biological processCarbohydrate metabolism, Polysaccharide degradation

Protein family/group databases

Carbohydrate-Active enZymes

More...
CAZyi
GH35 Glycoside Hydrolase Family 35

<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:
Beta-galactosidase ACurated (EC:3.2.1.231 Publication)
Alternative name(s):
Lactase A
<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:lacA
<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>OrganismiPenicillium sp.
<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 identifieri5081 [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 lineageiEukaryotaFungiDikaryaAscomycotaPezizomycotinaEurotiomycetesEurotiomycetidaeEurotialesAspergillaceaePenicillium

<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

Extracellular region or secreted Cytosol Plasma membrane Cell wall Cytoskeleton Vacuole Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte & Seán O’Donoghue; Source: COMPARTMENTS

Keywords - Cellular componenti

Secreted

<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 – 19Sequence analysisAdd BLAST19
<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_500007246020 – 1011Beta-galactosidase AAdd BLAST992

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the PTM / Processing":/help/ptm_processing_section section describes the positions of cysteine residues participating in disulfide bonds.<p><a href='/help/disulfid' target='_top'>More...</a></p>Disulfide bondi205 ↔ 206Combined sources1 Publication
Disulfide bondi267 ↔ 316Combined sources1 Publication
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM / Processing</a> section specifies the position and type of each covalently attached glycan group (mono-, di-, or polysaccharide).<p><a href='/help/carbohyd' target='_top'>More...</a></p>Glycosylationi374N-linked (GlcNAc...) asparagineCombined sources1 Publication1
Glycosylationi456N-linked (GlcNAc...) asparagineCombined sources1 Publication1
Glycosylationi625N-linked (GlcNAc...) asparagineCombined sources1 Publication1
Glycosylationi707N-linked (GlcNAc...) asparagineCombined sources1 Publication1
Glycosylationi763N-linked (GlcNAc...) asparagineCombined sources1 Publication1
Glycosylationi780N-linked (GlcNAc...) asparagineCombined sources1 Publication1
Glycosylationi917N-linked (GlcNAc...) asparagineCombined sources1 Publication1

Keywords - PTMi

Disulfide bond, Glycoprotein

Proteomic databases

PRoteomics IDEntifications database

More...
PRIDEi
Q700S9

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...
iPTMneti
Q700S9

<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.

1 Publication

<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

11011
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

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

More...
SMRi
Q700S9

Database of comparative protein structure models

More...
ModBasei
Search...

Protein Data Bank in Europe - Knowledge Base

More...
PDBe-KBi
Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...
EvolutionaryTracei
Q700S9

<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>Regioni140 – 142Substrate bindingCombined sources1 Publication3

<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 glycosyl hydrolase 35 family.Curated

Keywords - Domaini

Signal

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
2.102.20.10, 1 hit
2.60.120.260, 2 hits
2.60.390.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR018954 Betagal_dom2
IPR037110 Betagal_dom2_sf
IPR025972 BetaGal_dom3
IPR036833 BetaGal_dom3_sf
IPR025300 BetaGal_jelly_roll_dom
IPR008979 Galactose-bd-like_sf
IPR031330 Gly_Hdrlase_35_cat
IPR019801 Glyco_hydro_35_CS
IPR001944 Glycoside_Hdrlase_35
IPR017853 Glycoside_hydrolase_SF

The PANTHER Classification System

More...
PANTHERi
PTHR23421 PTHR23421, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF10435 BetaGal_dom2, 1 hit
PF13363 BetaGal_dom3, 1 hit
PF13364 BetaGal_dom4_5, 2 hits
PF01301 Glyco_hydro_35, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00742 GLHYDRLASE35

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM01029 BetaGal_dom2, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF117100 SSF117100, 1 hit
SSF49785 SSF49785, 2 hits
SSF51445 SSF51445, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS01182 GLYCOSYL_HYDROL_F35, 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>. The information is filed in different subsections. The current subsections and their content are listed below:<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.

Q700S9-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MKLLSSWVVA ALAAQAAGAA ISHKLDGFTI REHADPAKRA LLQKYVTWDE
60 70 80 90 100
HSIFVNGERL MIFSGEVHPY RLPVASLYID IFEKVKALGF NCVSFYVDWA
110 120 130 140 150
LLEGNPGHYS AEGIFDLQPF FDAAKEAGIY LLARPGPYIN AEVSGGGFPG
160 170 180 190 200
WLQRVDGILR TSDEAYLKAT DNYASNIAAT IAKAQITNGG PIILYQPENE
210 220 230 240 250
YSGACCGYNG FPDGSYMQYI EDHARDAGIV VPFISNDAWA AGHNAPGTGA
260 270 280 290 300
GAVDIYGHDS YPLGFDCANP STWPSGNLPT YFHTSHEQQS PSTPYSLVEF
310 320 330 340 350
QGGAFDPWGG VGFAKCAALL NHEFERVFYK NDFSFGVAFL NLYMIFGGTN
360 370 380 390 400
WGNLGHPGGY TSYDYGSAIS ESRNITREKY SELKLLGNFA KVSPGYLVAN
410 420 430 440 450
PGDLSTSTYT NTADLTVTPL LGSNSSASSF FVIRHSDYSS QASVEYKLTV
460 470 480 490 500
PTSAGNLTIP QLGGSLTLSG RDSKIHVTDY DVAGTNILYS TAEVFTWKKF
510 520 530 540 550
NNEKVLVLYG GPGEHHEFAV SGASSSSVVE GSSSGISSKK VGKALVVAWD
560 570 580 590 600
VSTARRIVQV GSLKVFLLDR NSAYNYWVPQ VPTKGTAPGY SNQETTASSI
610 620 630 640 650
IVKAGYLVRS AYLDGNDLHI QADFNATTPI EVVGAPSGAK NLVINGKKTQ
660 670 680 690 700
TKVDKNGIWS ASVAYTAPKV QLPSLKSLKW KSVDTLPEAK NTYDDSAWTS
710 720 730 740 750
ADHAYTNNSA HSLQTPTSLF ASDYGYHTGA LLFRGHFTAN GKEKTFFVQT
760 770 780 790 800
KGGTAYGHSI WINETYVGSW AGTSINDNNN ATYTLPTLQS GKNYVITVVI
810 820 830 840 850
DNMGLDEDWT IGSEDMKNPR GIIQYSLSGQ EASAISWKLT GNLGGENYRD
860 870 880 890 900
TVRGPLNEGG LYAERQGFHQ PQPPTQKWDS SSPFTGLTKP GIRFYSTSFD
910 920 930 940 950
LDLPSGYDIP LYFNFGNSTS TPAAYRVQLY VNGYQYGKYV NNIGPQTSFP
960 970 980 990 1000
VPEGILNYHG TNWLALSLWA QEDNGAKLDS FELINTTPVL TSLGEVKSVN
1010
QPKYQARKGA Y
Length:1,011
Mass (Da):109,750
Last modified:July 5, 2004 - 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:iA8A5BD48354F791A
GO

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
AJ629057 Genomic DNA Translation: CAF32457.1

<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
AJ629057 Genomic DNA Translation: CAF32457.1

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
1TG7X-ray1.90A41-1011[»]
1XC6X-ray2.10A41-1011[»]
SMRiQ700S9
ModBaseiSearch...
PDBe-KBiSearch...

Protein family/group databases

CAZyiGH35 Glycoside Hydrolase Family 35

PTM databases

iPTMnetiQ700S9

Proteomic databases

PRIDEiQ700S9

Miscellaneous databases

EvolutionaryTraceiQ700S9

Family and domain databases

Gene3Di2.102.20.10, 1 hit
2.60.120.260, 2 hits
2.60.390.10, 1 hit
InterProiView protein in InterPro
IPR018954 Betagal_dom2
IPR037110 Betagal_dom2_sf
IPR025972 BetaGal_dom3
IPR036833 BetaGal_dom3_sf
IPR025300 BetaGal_jelly_roll_dom
IPR008979 Galactose-bd-like_sf
IPR031330 Gly_Hdrlase_35_cat
IPR019801 Glyco_hydro_35_CS
IPR001944 Glycoside_Hdrlase_35
IPR017853 Glycoside_hydrolase_SF
PANTHERiPTHR23421 PTHR23421, 1 hit
PfamiView protein in Pfam
PF10435 BetaGal_dom2, 1 hit
PF13363 BetaGal_dom3, 1 hit
PF13364 BetaGal_dom4_5, 2 hits
PF01301 Glyco_hydro_35, 1 hit
PRINTSiPR00742 GLHYDRLASE35
SMARTiView protein in SMART
SM01029 BetaGal_dom2, 1 hit
SUPFAMiSSF117100 SSF117100, 1 hit
SSF49785 SSF49785, 2 hits
SSF51445 SSF51445, 1 hit
PROSITEiView protein in PROSITE
PS01182 GLYCOSYL_HYDROL_F35, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
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 nameiBGALA_PENSQ
<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: Q700S9
<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: July 13, 2010
Last sequence update: July 5, 2004
Last modified: September 18, 2019
This is version 71 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 programFungal 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

Documents

  1. Glycosyl hydrolases
    Classification of glycosyl hydrolase families and list of entries
  2. SIMILARITY comments
    Index of protein domains and families
  3. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
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