1C82

MECHANISM OF HYALURONAN BINDING AND DEGRADATION: STRUCTURE OF STREPTOCOCCUS PNEUMONIAE HYALURONATE LYASE IN COMPLEX WITH HYALURONIC ACID DISACCHARIDE AT 1.7 A RESOLUTION

External Resource: Annotation


Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

ChainsDomain InfoClassFoldSuperfamilyFamilyDomainSpeciesProvenance Source (Version)
Ad1c82a1 All alpha proteins alpha/alpha toroid Chondroitin AC/alginate lyase Hyaluronate lyase-like catalytic, N-terminal domain Hyaluronate lyase (Streptococcus pneumoniae ) [TaxId: 1313 ], SCOPe (2.08)
Ad1c82a2 All beta proteins Hyaluronate lyase-like, C-terminal domain Hyaluronate lyase-like, C-terminal domain Hyaluronate lyase-like, C-terminal domain Hyaluronate lyase (Streptococcus pneumoniae ) [TaxId: 1313 ], SCOPe (2.08)
Ad1c82a3 All beta proteins Supersandwich Galactose mutarotase-like Hyaluronate lyase-like, central domain Hyaluronate lyase (Streptococcus pneumoniae ) [TaxId: 1313 ], SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyChondroitin AC/alginate lyase 8043658 3001005 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyGalactose mutarotase-like 8043661 3000035 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyHyaluronate lyase-like, C-terminal domain 8043659 3001435 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
ALyase_8_C_1e1c82A1 A: beta sandwichesX: Glycosyl hydrolase domain-likeH: Hyaluronate lyase-like, C-terminal domain (From Topology)T: Hyaluronate lyase-like, C-terminal domainF: Lyase_8_C_1ECOD (1.6)
ALyase_8e1c82A2 A: beta sandwichesX: Glycosyl hydrolase domain-likeH: supersandwich (From Topology)T: supersandwichF: Lyase_8ECOD (1.6)
ALyase_8_Ne1c82A3 A: alpha superhelicesX: Repetitive alpha hairpinsH: alpha/alpha toroid (From Topology)T: alpha/alpha toroidF: Lyase_8_NECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A2.70.98.10 Mainly Beta Distorted Sandwich Beta-galactosidase Chain A, domain 5CATH (4.3.0)
A1.50.10.100 Mainly Alpha Alpha/alpha barrel Glycosyltransferase Chondroitin AC/alginate lyaseCATH (4.3.0)
A2.60.220.10 Mainly Beta Sandwich Chondroitinase Ac Chain A, domain 3CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF08124Polysaccharide lyase family 8, N terminal alpha-helical domain (Lyase_8_N)Polysaccharide lyase family 8, N terminal alpha-helical domain- Repeat
PF02278Polysaccharide lyase family 8, super-sandwich domain (Lyase_8)Polysaccharide lyase family 8, super-sandwich domain- Family
PF02884Polysaccharide lyase family 8, C-terminal beta-sandwich domain (Lyase_8_C)Polysaccharide lyase family 8, C-terminal beta-sandwich domainThis family consists of a group of secreted bacterial lyase enzymes EC:4.2.2.1 capable of acting on hyaluronan and chondroitin in the extracellular matrix of host tissues, contributing to the invasive capacity of the pathogen. Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
HYALURONATE LYASE

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
IPR011071Polysaccharide lyase family 8-like, C-terminalHomologous Superfamily
IPR008979Galactose-binding-like domain superfamilyHomologous Superfamily
IPR023295Hyaluronate lyase, beta-sheet domain superfamilyHomologous Superfamily
IPR012970Polysaccharide lyase 8, N-terminal alpha-helicalDomain
IPR004103Polysaccharide lyase family 8, C-terminalDomain
IPR014756Immunoglobulin E-setHomologous Superfamily
IPR038970Polysaccharide lyase 8Family
IPR054563Hyaluronate lyase-like, N-terminalDomain
IPR003159Polysaccharide lyase family 8, central domainDomain
IPR008929Chondroitin AC/alginate lyaseHomologous Superfamily
IPR014718Glycoside hydrolase-type carbohydrate-bindingHomologous Superfamily
IPR048734Hyaluronate lyase, N-terminal beta-sheet domainDomain
IPR011013Galactose mutarotase-like domain superfamilyHomologous Superfamily
IPR019931LPXTG cell wall anchor domainDomain

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
hyaluronate lyase  M-CSA #439

Bacterial hyaluronan lyases (Hyal) belong to the polysaccharide lyase 8 family and degrade hyaluronan. Hyaluronan is an important component of the extracellular matrix, and involved in microbial spread. Hyal inhibitors may serve as tools to study the role of the enzyme, its substrates and products in the course of bacterial infections. Moreover, such enzyme inhibitors are potential candidates for antibacterial combination therapy.

Hyal catalyse the degradation of hyaluronan by a beta-elimination reaction. Also acts on chondroitin. Ultimately, they break the polysaccharide down to its constituent parts, more systematically known as 3-(4-deoxy-alpha-L-threo-hex-4-enopyranosyluronic acid)-2-acetamido-2-deoxy-D-glucose.

Defined by 4 residues: ASN:A-182 [auth A-349]HIS:A-232 [auth A-399]TYR:A-241 [auth A-408]ARG:A-295 [auth A-462]
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Explore in 3D: M-CSA Motif Definition
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EC: 4.2.2.1 (PDB Primary Data)