Annotations: 1FMA

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B [auth E]	d1fmae_	Alpha and beta proteins (a+b)	alpha/beta-Hammerhead	Molybdopterin synthase subunit MoaE	Molybdopterin synthase subunit MoaE	Molybdopterin synthase subunit MoaE	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
A [auth D]	d1fmad_	Alpha and beta proteins (a+b)	beta-Grasp (ubiquitin-like)	MoaD/ThiS	MoaD	Molybdopterin synthase subunit MoaD	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B [auth E]	SCOP2B Superfamily	Molybdopterin synthase subunit MoaE	8035023	3000889	SCOP2B (2022-06-29)
A [auth D]	SCOP2B Superfamily	MoaD/ThiS-like	8034494	3000330	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B [auth E]	MoaE	e1fmaE1	A: a+b complex topology	X: alpha/beta-Hammerhead/Barrel-sandwich hybrid	H: alpha/beta-Hammerhead/Barrel-sandwich hybrid	T: Molybdopterin synthase subunit MoaE	F: MoaE	ECOD (1.6)
A [auth D]	ThiS	e1fmaD1	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: ThiS	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B [auth E]	3.90.1170.40	Alpha Beta	Alpha-Beta Complex	Aldehyde Oxidoreductase	domain 3	CATH (4.3.0)
A [auth D]	3.10.20.30	Alpha Beta	Roll	Ubiquitin-like (UB roll)	Beta-grasp domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B [auth E]	PF02391	MoaE protein (MoaE)	MoaE protein	-	Family
A [auth D]	PF02597	ThiS family (ThiS)	ThiS family	ThiS (thiaminS) is a 66 aa protein involved in sulphur transfer Swiss:O32583. ThiS is coded in the thiCEFSGH operon in E. coli. This family of proteins have two conserved Glycines at the COOH terminus. Thiocarboxylate is formed at the last G in the a ...	ThiS (thiaminS) is a 66 aa protein involved in sulphur transfer Swiss:O32583. ThiS is coded in the thiCEFSGH operon in E. coli. This family of proteins have two conserved Glycines at the COOH terminus. Thiocarboxylate is formed at the last G in the activation process. Sulphur is transferred from ThiI to ThiS in a reaction catalysed by IscS [1]. MoaD, Swiss:P30748 a protein involved sulphur transfer in molybdopterin synthesis, is about the same length and shows limited sequence similarity to ThiS. Both have the conserved GG at the COOH end.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B [auth E]	MOLYBDOPTERIN CONVERTING FACTOR, SUBUNIT 2	identical protein binding protein binding binding protein homodimerization activity protein dimerization activity sulfurtransferase activity molybdopterin synthase activity transferase activity, transferring sulphur-containing groups transferase activity catalytic activity	Mo-molybdopterin cofactor biosynthetic process Mo-molybdopterin cofactor metabolic process primary metabolic process prosthetic group metabolic process molybdopterin cofactor biosynthetic process biosynthetic process organophosphate metabolic process organophosphate biosynthetic process molybdopterin cofactor metabolic process phosphate-containing compound metabolic process metabolic process cellular process protein metabolic process macromolecule metabolic process Mo-molybdopterin cofactor biosynthetic process Mo-molybdopterin cofactor metabolic process primary metabolic process prosthetic group metabolic process molybdopterin cofactor biosynthetic process biosynthetic process organophosphate metabolic process organophosphate biosynthetic process molybdopterin cofactor metabolic process phosphate-containing compound metabolic process metabolic process cellular process protein metabolic process macromolecule metabolic process phosphorus metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol molybdopterin synthase complex protein-containing complex catalytic complex sulfurtransferase complex transferase complex
A [auth D]	MOLYBDOPTERIN CONVERTING FACTOR, SUBUNIT 1	binding nucleoside phosphate binding nucleotide binding heterocyclic compound binding small molecule binding	Mo-molybdopterin cofactor biosynthetic process Mo-molybdopterin cofactor metabolic process primary metabolic process prosthetic group metabolic process molybdopterin cofactor biosynthetic process biosynthetic process organophosphate metabolic process organophosphate biosynthetic process molybdopterin cofactor metabolic process phosphate-containing compound metabolic process metabolic process cellular process protein metabolic process macromolecule metabolic process Mo-molybdopterin cofactor biosynthetic process Mo-molybdopterin cofactor metabolic process primary metabolic process prosthetic group metabolic process molybdopterin cofactor biosynthetic process biosynthetic process organophosphate metabolic process organophosphate biosynthetic process molybdopterin cofactor metabolic process phosphate-containing compound metabolic process metabolic process cellular process protein metabolic process macromolecule metabolic process phosphorus metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol transferase complex, transferring phosphorus-containing groups protein-containing complex catalytic complex molybdopterin adenylyltransferase complex adenylyltransferase complex transferase complex molybdopterin synthase complex sulfurtransferase complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B [auth E]	IPR036563	Molybdopterin biosynthesis MoaE subunit superfamily	Homologous Superfamily
B [auth E]	IPR003448	Molybdopterin biosynthesis MoaE	Family
A [auth D]	IPR003749	Sulfur carrier ThiS/MoaD-like	Family
A [auth D]	IPR016155	Molybdopterin synthase/thiamin biosynthesis sulphur carrier, beta-grasp	Homologous Superfamily
A [auth D]	IPR044672	Molybdopterin synthase sulfur carrier subunit	Family
A [auth D]	IPR012675	Beta-grasp domain superfamily	Homologous Superfamily

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.