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Entry version 108 (10 Feb 2021)
Sequence version 2 (01 Feb 1994)
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Protein

Beta-galactosidase

Gene

lacA

Organism
Aspergillus niger
Status
Reviewed-Annotation score:

Annotation score:3 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.

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">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

  • Hydrolysis of terminal non-reducing beta-D-galactose residues in beta-D-galactosides. EC:3.2.1.23

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">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 sitei298NucleophileSequence analysis1

<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

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
MetaCyc:MONOMER-16612

BRENDA Comprehensive Enzyme Information System

More...
BRENDAi
3.2.1.23, 518

Protein family/group databases

Carbohydrate-Active enZymes

More...
CAZyi
GH35, Glycoside Hydrolase Family 35

CLAE, a database of fungal genes encoding lignocellulose-active proteins

More...
CLAEi
LAC35A_ASPNG

<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%5Fand%5Ftaxonomy%5Fsection">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 (EC:3.2.1.23)
Alternative name(s):
Lactase-N
Short name:
Lactase
INN: Tilactase
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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%5Fand%5Ftaxonomy%5Fsection">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>OrganismiAspergillus niger
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 identifieri5061 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 lineageiEukaryotaFungiDikaryaAscomycotaPezizomycotinaEurotiomycetesEurotiomycetidaeEurotialesAspergillaceaeAspergillusAspergillus subgen. Circumdati

<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

<p>This subsection of the 'Pathology and Biotech' section describes the use of a protein as a pharmaceutical drug. It indicates the name of the drug, the name of the firm that commercializes it and explains in a few words in which context the drug is used. In some cases, drugs that are under development are also described.<p><a href='/help/pharmaceutical_use' target='_top'>More...</a></p>Pharmaceutical usei

Capable of effecting hydrolysis of lactose in situ in the gastrointestinal tract of lactase-deficient subjects when given as replacement therapy at mealtime.

Chemistry databases

ChEMBL database of bioactive drug-like small molecules

More...
ChEMBLi
CHEMBL4753

<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 or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_000001219220 – 1006Beta-galactosidaseAdd BLAST987

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">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>Glycosylationi156N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi373N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi402N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi422N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi478N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi522N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi622N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi739N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi760N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi777N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi805N-linked (GlcNAc...) asparagineSequence analysis1

Keywords - PTMi

Glycoprotein

<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

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
5061.CADANGAP00001173

Chemistry databases

BindingDB database of measured binding affinities

More...
BindingDBi
P29853

<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

3D structure databases

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

More...
SMRi
P29853

Database of comparative protein structure models

More...
ModBasei
Search...

<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 glycosyl hydrolase 35 family.Curated

Keywords - Domaini

Signal

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG0496, Eukaryota

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

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

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%5Flength">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%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">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%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">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.

P29853-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MKLSSACAIA LLAAQAAGAS IKHRINGFTL TEHSDPAKRE LLQKYVTWDD
60 70 80 90 100
KSLFINGERI MIFSGEFHPF RLPVKELQLD IFQKVKALGF NCVSFYVDWA
110 120 130 140 150
LVEGKPGEYR ADGIFDLEPF FDAASEAGIY LLARPGPYIN AESSGGGFPG
160 170 180 190 200
WLQRVNGTLR SSDKAYLDAT DNYVSHVAAT IAKYQITNGG PIILYQPENE
210 220 230 240 250
YTSGCSGVEF PDPVYMQYVE DQARNAGVVI PLINNDASAS GNNAPGTGKG
260 270 280 290 300
AVDIYGHDSY PLGFDCANPT VWPSGDLPTN FRTLHLEQSP TTPYAIVEFQ
310 320 330 340 350
GGSYDPWGGP GFAACSELLN NEFERVFYKN DFSFQIAIMN LYMIFGGTNW
360 370 380 390 400
GNLGYPNGYT SYDYGSAVTE SRNITREKYS ELKLLGNFAK VSPGYLTASP
410 420 430 440 450
GNLTTSGYAD TTDLTVTPLL GNSTGSFFVV RHSDYSSEES TSYKLRLPTS
460 470 480 490 500
AGSVTIPQLG GTLTLNGRDS KIHVTDHNVS GTNIIYSTAE VFTWKKFADG
510 520 530 540 550
KVLVLYGGAG EHHELAISTK SNVTVIEGSE SGISSKQTSS SVVVGWDVST
560 570 580 590 600
TRRIIQVGDL KILLLDRNSA YNYWVPQLAT DGTSPGFSTP EKVASSIIVK
610 620 630 640 650
AGYLVRTAYL KGSGLYLTAD FNATTSVEVI GVPSTAKNLF INGDKTSHTV
660 670 680 690 700
DKNGIWSATV DYNAPDISLP SLKDLDWKYV DTLPEIQSSY DDSLWPAADL
710 720 730 740 750
KQTKNTLRSL TTPTSLYSSD YGFHTGYLLY RGHFTATGNE STFAIDTQGG
760 770 780 790 800
SAFGSSVWLN GTYLGSWTGL YANSDYNATY NLPQLQAGKT YVITVVIDNM
810 820 830 840 850
GLEENWTVGE DLMKSPRGIS TSCLPDGQAA PISWKLTGNL GGEDYEDKVR
860 870 880 890 900
GPLNEGGLYA ERQGFHQPEP PSQNWKSSSP LEGLSEAGIG FYSASFDLDL
910 920 930 940 950
PKDGMSHCSS TSVTALRHPR TACRSTSTDI VCEIHKQHRT SDQLPCPRGN
960 970 980 990 1000
PELSRNELVG GDPVALDSAG GKLESLELSY TTPVLTALGE VESVDQPKYK

KRKGAY
Length:1,006
Mass (Da):109,161
Last modified:February 1, 1994 - v2
<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:i7157B28A83805488
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 conflicti206S → C in CAA00105 (Ref. 2) Curated1

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
L06037 Genomic DNA Translation: AAA32696.1
S37150 mRNA Translation: AAC60538.1
A00968 Unassigned DNA Translation: CAA00105.1

Protein sequence database of the Protein Information Resource

More...
PIRi
T31685

<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
L06037 Genomic DNA Translation: AAA32696.1
S37150 mRNA Translation: AAC60538.1
A00968 Unassigned DNA Translation: CAA00105.1
PIRiT31685

3D structure databases

SMRiP29853
ModBaseiSearch...

Protein-protein interaction databases

STRINGi5061.CADANGAP00001173

Chemistry databases

BindingDBiP29853
ChEMBLiCHEMBL4753

Protein family/group databases

CAZyiGH35, Glycoside Hydrolase Family 35
CLAEiLAC35A_ASPNG

Phylogenomic databases

eggNOGiKOG0496, Eukaryota

Enzyme and pathway databases

BioCyciMetaCyc:MONOMER-16612
BRENDAi3.2.1.23, 518

Family and domain databases

Gene3Di2.102.20.10, 1 hit
2.60.120.260, 1 hit
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, 2 hits
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 nameiBGAL_ASPNG
<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: P29853
<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%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: April 1, 1993
Last sequence update: February 1, 1994
Last modified: February 10, 2021
This is version 108 of the entry and version 2 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

Pharmaceutical

Documents

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