Crystal Structures of Methionine Adenosyltransferase Complexed with Substrates and Products Reveal the Methionine-ATP Recognition and Give Insights Into the Catalytic Mechanism

139555 Biological Macromolecular Structures Enabling Breakthroughs in Research and Education

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species
A17-116	d1o90a1	Alpha and beta proteins (a+b)	S-adenosylmethionine synthetase	S-adenosylmethionine synthetase	S-adenosylmethionine synthetase	S-adenosylmethionine synthetase	Rat (Rattus norvegicus) [TaxId: 10116]
A129-252	d1o90a2	Alpha and beta proteins (a+b)	S-adenosylmethionine synthetase	S-adenosylmethionine synthetase	S-adenosylmethionine synthetase	S-adenosylmethionine synthetase	Rat (Rattus norvegicus) [TaxId: 10116]
A253-396	d1o90a3	Alpha and beta proteins (a+b)	S-adenosylmethionine synthetase	S-adenosylmethionine synthetase	S-adenosylmethionine synthetase	S-adenosylmethionine synthetase	Rat (Rattus norvegicus) [TaxId: 10116]
B17-116	d1o90b1	Alpha and beta proteins (a+b)	S-adenosylmethionine synthetase	S-adenosylmethionine synthetase	S-adenosylmethionine synthetase	S-adenosylmethionine synthetase	Rat (Rattus norvegicus) [TaxId: 10116]
B129-252	d1o90b2	Alpha and beta proteins (a+b)	S-adenosylmethionine synthetase	S-adenosylmethionine synthetase	S-adenosylmethionine synthetase	S-adenosylmethionine synthetase	Rat (Rattus norvegicus) [TaxId: 10116]
B253-396	d1o90b3	Alpha and beta proteins (a+b)	S-adenosylmethionine synthetase	S-adenosylmethionine synthetase	S-adenosylmethionine synthetase	S-adenosylmethionine synthetase	Rat (Rattus norvegicus) [TaxId: 10116]

Chains	Domain	Class	Architecture	Topology
A1	1o90A01	Alpha Beta	2-Layer Sandwich	GMP Synthetase; Chain A, domain 3
A2	1o90A02	Alpha Beta	2-Layer Sandwich	GMP Synthetase; Chain A, domain 3
A3	1o90A03	Alpha Beta	2-Layer Sandwich	GMP Synthetase; Chain A, domain 3
B1	1o90B01	Alpha Beta	2-Layer Sandwich	GMP Synthetase; Chain A, domain 3
B2	1o90B02	Alpha Beta	2-Layer Sandwich	GMP Synthetase; Chain A, domain 3
B3	1o90B03	Alpha Beta	2-Layer Sandwich	GMP Synthetase; Chain A, domain 3

Chains	Pfam Accession	Pfam Identifier	Pfam Description	Type	Source

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A,B	S-ADENOSYLMETHIONINE SYNTHETASE (1O90:A,B)	Nucleotide Binding Magnesium Ion Binding Methionine Adenosyltransferase Activity ATP Binding Amino Acid Binding Transferase Activity Identical Protein Binding Protein Homodimerization Activity Adp Binding Metal Ion Binding Protein Dimerization Activity	S Adenosylmethionine Biosynthetic Process One Carbon Metabolic Process Methionine Catabolic Process Protein Homooligomerization Protein Tetramerization Protein Homotetramerization	Cytosol Nuclear Matrix

Type	PDB Residue Nr.	Description