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1U7C

Crystal Structure of AmtB from E.Coli with Methyl Ammonium.

Functional Information from GO Data
ChainGOidnamespacecontents
A0005515molecular_functionprotein binding
A0005886cellular_componentplasma membrane
A0008519molecular_functionammonium channel activity
A0015670biological_processcarbon dioxide transport
A0016020cellular_componentmembrane
A0042802molecular_functionidentical protein binding
A0072488biological_processammonium transmembrane transport
Functional Information from PDB Data
site_idAC1
Number of Residues4
DetailsBINDING SITE FOR RESIDUE NME A 400
ChainResidue
APHE107
ATRP148
ASER219
AHOH699

Functional Information from PROSITE/UniProt
site_idPS01219
Number of Residues26
DetailsAMMONIUM_TRANSP Ammonium transporters signature. DFAGGtvVhinAAiaGLvgaYLiGkR
ChainResidueDetails
AASP160-ARG185

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues37
DetailsTopological domain: {"description":"Cytoplasmic","evidences":[{"source":"PubMed","id":"15361618","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"15563598","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"17040913","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues99
DetailsTransmembrane: {"description":"Helical","evidences":[{"source":"PubMed","id":"15361618","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"15563598","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"17040913","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues20
DetailsTopological domain: {"description":"Periplasmic","evidences":[{"source":"PubMed","id":"15361618","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"15563598","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"17040913","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues1
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"15361618","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues1
DetailsSite: {"description":"Important for the deprotonation of the ammonium cation","evidences":[{"source":"PubMed","id":"19278252","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues2
DetailsSite: {"description":"Twin-His motif. Important for optimum substrate conductance","evidences":[{"source":"PubMed","id":"17040913","evidenceCode":"ECO:0000305"},{"source":"PubMed","id":"23667517","evidenceCode":"ECO:0000305"},{"source":"PubMed","id":"32662768","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues1
DetailsSite: {"description":"Important for optimum substrate conductance","evidences":[{"source":"PubMed","id":"18362341","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

239803

PDB entries from 2025-08-06

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