Mechanism	Inverting e
3D Structure Status	parallel β-helix
Catalytic Nucleophile/Base	Not known
Catalytic Proton Donor	Glu
Note	Subfamiles established in (Hornung and Terrapon, 2024) [PMID:37585436]
External resources	CAZypedia;
Commercial Enzyme Provider(s)	MEGAZYME;
Statistics	GenBank accession (2663); Uniprot accession (54); PDB accession (14); 3D entries (4); cryst (0)

Bacteria
Protein Name	EC#	Organism	GenBank	Uniprot	PDB/3D Carbohydrate Ligands Resolution (Å)	Subf
exo-β-1,3-glucanase (SacteLam55A; SACTE_4363) (Lam55A)	3.2.1.58	Streptomyces sp. SirexAA-E	AEN12197.1	G2NFJ9	4PEW[A,B] 1.51 4PEX[A,B] β-D-Glcp 1.75 4PEY[A] β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp 1.50 4PEZ[A] β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp D-1-deoxy-Glcp 1.90 4PF0[A,B] β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp 1.75 4TYV[A,B] β-D-Glcp 1.75 4TZ1[A] β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp 1.50 4TZ3[A] β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp D-1-deoxy-Glcp 1.90 4TZ5[A,B] β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp 1.75	1
Eukaryota
Protein Name	EC#	Organism	GenBank	Uniprot	PDB/3D Carbohydrate Ligands Resolution (Å)	Subf
laminarin endo-β-1,3-glucosidase, partial (Mnlam55A)	3.2.1.-	Microdochium nivale	BEK81619.1		8JHH[A,B]	2
exo-β-1,3-glucanase (PcLam55A) (Lam55A)	3.2.1.58	Phanerochaete chrysosporium K-3	BAE48426.1	Q2Z1W1	3EQN[A,B] 1.70 3EQO[A,B] α-D-Glcp 2.25	2
exo-β-1,3-glucanase (GluN;CtLam55)	3.2.1.58	Thermochaetoides thermophila CT2	ACS66685.1 ACI14529.1	D8UU87 G0S3N2 G8XQY9	5M5Z[A] 1.25 5M60[A] β-D-Glcp 1.50	2
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