3HTX
Crystal structure of small RNA methyltransferase HEN1
Entity
Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
1 | A, D | HEN1 | polymer | 950 | 105542.5 | 2 | UniProt (Q945R3) Pfam (PF21224) Pfam (PF18441) Pfam (PF17842) Pfam (PF13847) UniProt (by SIFTS) (Q9C5Q8) In PDB | Arabidopsis thaliana | |
2 | B, E | 5'-R(*GP*AP*UP*UP*UP*CP*UP*CP*UP*CP*UP*GP*CP*AP*AP*GP*CP*GP*AP*AP*AP*G)-3' | polymer | 22 | 7019.2 | 2 | |||
3 | C, F | 5'-R(P*UP*UP*CP*GP*CP*UP*UP*GP*CP*AP*GP*AP*GP*AP*GP*AP*AP*AP*UP*CP*AP*C)-3' | polymer | 22 | 7042.3 | 2 | |||
4 | A, D | MAGNESIUM ION | non-polymer | 24.3 | 2 | Chemie (MG) | |||
5 | A, D | S-ADENOSYL-L-HOMOCYSTEINE | non-polymer | 384.4 | 2 | Chemie (SAH) | |||
6 | water | water | 18.0 | 37 | Chemie (HOH) |
Sequence modifications
A, D: 1 - 942 (UniProt: Q945R3)
PDB | External Database | Details |
---|---|---|
Met -7 | - | expression tag |
Gly -6 | - | expression tag |
His -5 | - | expression tag |
His -4 | - | expression tag |
His -3 | - | expression tag |
His -2 | - | expression tag |
His -1 | - | expression tag |
His 0 | - | expression tag |
Pro 604 | Leu 604 | engineered mutation |
Lys 640 | Arg 640 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
Polymers | Number of chains | 6 |
Total formula weight | 239207.9 | |
Non-Polymers* | Number of molecules | 4 |
Total formula weight | 817.4 | |
All* | Total formula weight | 240025.4 |