Annotations: 2LJI

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	ThiS_1	e2ljiA1	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: ThiS_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	4.10.410.50	Few Secondary Structures	Irregular	Factor Xa Inhibitor		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF21965	Small archaeal modifier protein 2 (SAMP2)	Small archaeal modifier protein 2	The ubiquitin-like small archaeal modifer protein 2 (SAMP2) is involved in sulfur transfer during molybdenum cofactor biosynthesis. SAMP2 has been demonstrated to form covalent conjugates with substrate proteins through an isopeptide linkage via C-te ...	The ubiquitin-like small archaeal modifer protein 2 (SAMP2) is involved in sulfur transfer during molybdenum cofactor biosynthesis. SAMP2 has been demonstrated to form covalent conjugates with substrate proteins through an isopeptide linkage via C-terminal di-glycine motif in a streamlined archaeal E1-dependent pathway. SAMP2 also forms homo-conjugates through the intermolecular isopeptide bond between the C-terminal glycine and the Lys58 side chain, a feature that likely resembles polyubiquitination. This protein adopt a typical ubiquitin-like fold.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Small archaeal modifier protein 2	protein tag activity molecular tag activity binding nucleoside phosphate binding nucleotide binding heterocyclic compound binding small molecule binding	macromolecule modification metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process post-translational protein modification protein modification process protein modification by small protein conjugation protein modification by small protein conjugation or removal	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR053833	Small archaeal modifier protein 2	Family
A	IPR016155	Molybdopterin synthase/thiamin biosynthesis sulphur carrier, beta-grasp	Homologous Superfamily
A	IPR053752	Small archaeal modifier domain-containing protein	Homologous Superfamily
A	IPR053834	Ubiquitin-like small modifier protein 2, halobacteria	Family

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.