4M3P
Betaine-Homocysteine S-Methyltransferase from Homo sapiens complexed with Homocysteine
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A, B, C, D (A, B, C, D) | Betaine--homocysteine S-methyltransferase 1 | polymer | 406 | 45030.4 | 4 | UniProt (Q93088) Pfam (PF02574) | Homo sapiens (human) | |
| 2 | E, I, L, P (A, B, C, D) | ZINC ION | non-polymer | 65.4 | 4 | Chemie (ZN) | |||
| 3 | F, J, M, Q (A, B, C, D) | POTASSIUM ION | non-polymer | 39.1 | 4 | Chemie (K) | |||
| 4 | G, K, N, R (A, B, C, D) | 2-AMINO-4-MERCAPTO-BUTYRIC ACID | non-polymer | 135.2 | 4 | Chemie (HCS) | |||
| 5 | H, O (B, D) | S,R MESO-TARTARIC ACID | non-polymer | 150.1 | 2 | Chemie (SRT) | |||
| 6 | S, T, U, V (A, B, C, D) | water | water | 18.0 | 644 | Chemie (HOH) |
Sequence modifications
A, B, C, D: 1 - 406 (UniProt: Q93088)
| PDB | External Database | Details |
|---|---|---|
| Gln 239 | Arg 239 | SEE REMARK 999 |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 4 |
| Total formula weight | 180121.5 | |
| Non-Polymers* | Number of molecules | 14 |
| Total formula weight | 1258.9 | |
| All* | Total formula weight | 181380.5 |
