1SSX | pdb_00001ssx

0.83A resolution crystal structure of alpha-lytic protease at pH 8

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: CATH
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Structure Motif: Primary M-CSA Annotation

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1ssxa_	All beta proteins	Trypsin-like serine proteases	Trypsin-like serine proteases	Prokaryotic proteases	alpha-Lytic protease	(Lysobacter enzymogenes ) [TaxId: 69 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Trypsin-like serine proteases	8042155	3000114	SCOP2B (2022-06-29)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.40.10.10	Mainly Beta	Beta Barrel	Thrombin, subunit H	Trypsin-like serine proteases	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Alpha-lytic protease	peptidase activity catalytic activity, acting on a protein serine hydrolase activity serine-type peptidase activity hydrolase activity serine-type endopeptidase activity catalytic activity endopeptidase activity	proteolysis metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process	cellular anatomical structure extracellular region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR001254	Serine proteases, trypsin domain	Domain
A	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
A	IPR035070	Streptogrisin prodomain	Homologous Superfamily
A	IPR004236	Peptidase S1A, alpha-lytic prodomain	Domain
A	IPR037295	Alpha-lytic protease prodomain	Homologous Superfamily
A	IPR001316	Peptidase S1A, streptogrisin	Family
A	IPR043504	Peptidase_S1_PA_chymotrypsin	Unknown

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

Chains	Enzyme Name	Description	Catalytic Residues
A	alpha-lytic endopeptidase M-CSA #609	Alpha-lytic protease is a bacterial homologue of the chymotrypsin family of serine proteases. The role of this unusually stable extracellular enzyme is to lyse microorganisms and proteolyse their contents to provide nutrients for the host bacterium. The enzyme preferentially cleaves Ala-\|-Xaa, Val-\|-Xaa in bacterial cell walls, elastin and other proteins. Belongs to the peptidase S1E family.	Defined by 5 residues: HIS:A-36 [auth A-57]ASP:A-63 [auth A-102]GLY:A-141 [auth A-193]SER:A-143 [auth A-195]SER:A-159 [auth A-214] \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 3.4.21.12 (PDB Primary Data) Search M-CSA Motif + EC 3.4.21.12

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.