Structure based on 1ppg

Ideal structure
Name: (4s)-4-hydroxy-4-methoxybutanoic acid
Formula: C5 H10 O4
Weight: 134.131
Spacial conformation based on PDB 1ppg.
Also present on 3f7o
RESIDUE   HMB     19
CONECT      CA     4 CB   C    HA1  HA2 
CONECT      CB     4 CA   CG   HB1  HB2 
CONECT      CG     4 CB   OD1  OD2  HG  
CONECT      CE     4 OD2  HE1  HE2  HE3 
CONECT      C      3 CA   O    O4  
CONECT      OD1    2 CG   HD1 
CONECT      OD2    2 CG   CE  
CONECT      O      1 C   
CONECT      HA1    1 CA  
CONECT      HA2    1 CA  
CONECT      HB1    1 CB  
CONECT      HB2    1 CB  
CONECT      HG     1 CG  
CONECT      HE1    1 CE  
CONECT      HE2    1 CE  
CONECT      HE3    1 CE  
CONECT      O4     2 C    H10 
CONECT      HD1    1 OD1 
CONECT      H10    1 O4  
HET    HMB             19
HETNAM     HMB (4S)-4-hydroxy-4-methoxybutanoic acid
FORMUL      HMB    C5 H10 O4

uses Jmol, developed by the Jmol Development Team (color reference)
OCA© by Jaime Prilusky, 1996-2004,2006,2010,2014
Bioinformatics Unit
Weizmann Institute of Science