4IYS

Structural and ligand binding properties of the Bateman domain of human magnesium transporters CNNM2 and CNNM4

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	IMPDH_2nd_1	e4iysA1	A: a+b duplicates or obligate multimers	X: CBS-domain (From Topology)	H: CBS-domain (From Topology)	T: CBS-domain	F: IMPDH_2nd_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.10.580.10	Alpha Beta	Roll	CBS-domain	CBS-domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00571	CBS domain (CBS)	CBS domain	CBS domains are small intracellular modules that pair together to form a stable globular domain [2]. This family represents a single CBS domain. Pairs of these domains have been termed a Bateman domain [6]. CBS domains have been shown to bind ligands ...	CBS domains are small intracellular modules that pair together to form a stable globular domain [2]. This family represents a single CBS domain. Pairs of these domains have been termed a Bateman domain [6]. CBS domains have been shown to bind ligands with an adenosyl group such as AMP, ATP and S-AdoMet [5]. CBS domains are found attached to a wide range of other protein domains suggesting that CBS domains may play a regulatory role making proteins sensitive to adenosyl carrying ligands. The region containing the CBS domains in Cystathionine-beta synthase is involved in regulation by S-AdoMet [4]. CBS domain pairs from AMPK bind AMP or ATP [5]. The CBS domains from IMPDH and the chloride channel CLC2 bind ATP [5].	Domain
A	PF01595	Cyclin M transmembrane N-terminal domain (CNNM)	Cyclin M transmembrane N-terminal domain	This transmembrane domain is found in metal transporter proteins such as cyclin M 1/2 (CNNM). CNNMs are integral membrane proteins that are conserved from bacteria to humans. CNNM family members influence metal ion homeostasis through mechanisms that ...	This transmembrane domain is found in metal transporter proteins such as cyclin M 1/2 (CNNM). CNNMs are integral membrane proteins that are conserved from bacteria to humans. CNNM family members influence metal ion homeostasis through mechanisms that may not involve direct membrane transport of the ions. Structurally, CNNMs are complex proteins that contain an extracellular N-terminal domain preceding a transmembrane domain, a 'Bateman module', which consists of two cystathionine- beta-synthase (CBS) domains Pfam:PF00571, and a C-terminal cNMP (cyclic nucleotide monophosphate) binding domain [1, 2, 3, 4]. This entry describes the CNNM transmembrane domain which contains four hydrophobic regions and forms a dimer through hydrophobic contacts between TM2 and TM3, in which each chain is composed of three transmembrane helices (TM1-3), a pair of short helices exposed on the intracellular side, and a juxtamembrane (JM) helix that forms a belt-like structure [2,5]. The homodimer adopts an inward-facing conformation with a negatively charged cavity containing a conserved pi-helical turn in TM3 that coordinates a Mg2 ion [5].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Metal transporter CNNM2	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding monoatomic cation transmembrane transporter activity magnesium ion transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity	magnesium ion homeostasis inorganic ion homeostasis chemical homeostasis homeostatic process monoatomic ion homeostasis monoatomic cation homeostasis	cell periphery plasma membrane membrane cellular anatomical entity basal part of cell basal plasma membrane plasma membrane region basolateral plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR046342	CBS domain superfamily	Homologous Superfamily
A	IPR044751	Ion transporter-like, CBS domain	Domain
A	IPR045095	Ancient conserved domain protein family	Family
A	IPR000644	CBS domain	Domain
A	IPR002550	CNNM, transmembrane domain	Domain
A	IPR014710	RmlC-like jelly roll fold	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q9H8M5	renal hypomagnesemia 6 hypomagnesemia, seizures, and intellectual disability 1 Tetany intellectual disability visual epilepsy kidney disease brain aneurysm hypertensive disorder large cell medulloblastoma myocardial infarction autism spectrum disorder epilepsy familial primary hypomagnesemia with normocalciuria and normocalcemia tuberculosis hypomagnesemia, seizures, and intellectual disability renal hypomagnesemia 6 hypomagnesemia, seizures, and intellectual disability 1 Tetany intellectual disability visual epilepsy kidney disease brain aneurysm hypertensive disorder large cell medulloblastoma myocardial infarction autism spectrum disorder epilepsy familial primary hypomagnesemia with normocalciuria and normocalcemia tuberculosis hypomagnesemia, seizures, and intellectual disability lung carcinoma anorexia nervosa attention deficit hyperactivity disorder, inattentive type bipolar disorder schizophrenia colorectal cancer ulcerative colitis heart disease medulloblastoma atypical teratoid rhabdoid tumor osteosarcoma endogenous depression

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.