1Q6E
Crystal Structure of Soybean Beta-Amylase Mutant (E178Y) with Increased pH Optimum at pH 5.4
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (A) | beta-amylase | polymer | 495 | 55999.2 | 1 | UniProt (Q42795) Pfam (PF01373) UniProt (by SIFTS) (P10538) | Glycine max (soybean) | |
| 2 | B (B) | alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose | branched | 342.3 | 1 | In PDB BIRD (PRD_900001) GlyTouCan (G07411ON) | alpha-maltose | ||
| 3 | C (C) | alpha-D-glucopyranose-(1-4)-beta-D-glucopyranose | branched | 342.3 | 1 | In PDB BIRD (PRD_900018) GlyTouCan (G66120GK) | beta-maltose | ||
| 4 | D, E (A) | SULFATE ION | non-polymer | 96.1 | 2 | Chemie (SO4) | |||
| 5 | F (A) | water | water | 18.0 | 312 | Chemie (HOH) |
Sequence modifications
A: 1 - 495 (UniProt: Q42795)
| PDB | External Database | Details |
|---|---|---|
| Leu 76 | Phe 77 | SEE REMARK 999 |
| Tyr 178 | Glu 179 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 1 |
| Total formula weight | 55999.2 | |
| Branched | Number of molecules | 2 |
| Total formula weight | 684.6 | |
| Non-Polymers* | Number of molecules | 2 |
| Total formula weight | 192.1 | |
| All* | Total formula weight | 56875.9 |
