Accession | TIGR00836 |
Name | amt |
Function | ammonium transporter |
Gene Symbol | amt |
Trusted Cutoff | 343.30 |
Domain Trusted Cutoff | 343.30 |
Noise Cutoff | 250.20 |
Domain Noise Cutoff | 250.20 |
Isology Type | subfamily |
HMM Length | 406 |
Mainrole Category | Transport and binding proteins |
Subrole Category | Cations and iron carrying compounds |
Gene Ontology Term | GO:0008519: ammonium transmembrane transporter activity molecular_function |
| GO:0015696: ammonium transport biological_process |
Author | Paulsen IT, Saier MH, Loftus BJ |
Entry Date | Jul 25 2000 6:19PM |
Last Modified | Feb 14 2011 3:27PM |
Comment | The Ammonium Transporter (Amt) Family (TC 2.A.49)
All functionally characterized members of the Amt family are ammonia or ammonium uptake transporters. Some, but not others, also transport methylammonium.
The mechanism of energy coupling, if any, to methyl-NH2 or NH3 uptake by the AmtB protein of E. coli is not entirely clear. NH4+ uniport driven by the pmf, energy independent NH3 facilitation, and NH4+/K+ antiport have been proposed as possible transport mechanisms. In Corynebacterium glutamicum and Arabidopsis thaliana, uptake via the Amt1 homologues of AmtB has been reported to be driven by the pmf. |
References | A2 hmmalign
SE Ipaulsen
AL clustalw_manual |