Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AHDe4bzcA1 A: alpha complex topologyX: PDEase-likeH: HD-domain/PDEase-like (From Topology)T: HD-domain/PDEase-likeF: HDECOD (1.6)
BHDe4bzcB1 A: alpha complex topologyX: PDEase-likeH: HD-domain/PDEase-like (From Topology)T: HD-domain/PDEase-likeF: HDECOD (1.6)
CHDe4bzcC1 A: alpha complex topologyX: PDEase-likeH: HD-domain/PDEase-like (From Topology)T: HD-domain/PDEase-likeF: HDECOD (1.6)
DHDe4bzcD1 A: alpha complex topologyX: PDEase-likeH: HD-domain/PDEase-like (From Topology)T: HD-domain/PDEase-likeF: HDECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B, C, D
PF01966HD domain (HD)HD domain- Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B, C, D
DEOXYNUCLEOSIDE TRIPHOSPHATE TRIPHOSPHOHYDROLASE SAMHD1

Pharos: Disease Associations Pharos Homepage Annotation

ChainsDrug Target  Associated Disease
A, B, C, D
PharosQ9Y3Z3

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

ChainsEnzyme NameDescriptionCatalytic Residues
deoxynucleoside triphosphate triphosphohydrolase SAMHD1  M-CSA #994

Sterile α-motif/histidine-aspartate domain-containing protein (SAMHD1) is a homo-tetrameric GTP/dGTP-activated dNTPase which catalyses the conversion of dNTP into 2'-deoxynucleoside and triphosphate. The enzyme interconverts between an inactive monomeric or dimeric form and a dGTP/GTP-induced active tetrameric form. SAMHD1 is ubiquitously expressed in various human organs.

SAMHD1 plays an important role in human innate immunity, autoimmunity and cell cycle control. It blocks retroviral infections (including HIV) and transposition of endogenous retroelements as well as preventing infections from certain DNA viruses.

Defined by 12 residues: GLN:A-73 [auth A-149]HIS:A-91 [auth A-167]HIS:A-130 [auth A-206]ASP:A-131 [auth A-207]HIS:A-134 [auth A-210]HIS:A-139 [auth A-215]ASP:A-142 [auth A-218]HIS:A-157 [auth A-233]ASP:A-235 [auth A-311]LYS:A-236 [auth A-312]ASP:A-243 [auth A-319]ARG:A-290 [auth A-366]
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Explore in 3DM-CSA Motif Definition
Up to 10 residues are supported for Structure Motif searching, this motif has 12 residues.
EC: 3.1.5 (PDB Primary Data)