RESIDUE 1LU 21 CONECT OS 2 CA HOS CONECT CA 4 OS C CB HA CONECT C 3 CA O OXT CONECT O 1 C CONECT CB 4 CA CG HB1 HB2 CONECT CG 4 CB CD1 CD2 HG CONECT CD1 4 CG HD11 HD12 HD13 CONECT CD2 4 CG HD21 HD22 HD23 CONECT OXT 2 C HXT CONECT HOS 1 OS CONECT HA 1 CA CONECT HB1 1 CB CONECT HB2 1 CB CONECT HG 1 CG CONECT HD11 1 CD1 CONECT HD12 1 CD1 CONECT HD13 1 CD1 CONECT HD21 1 CD2 CONECT HD22 1 CD2 CONECT HD23 1 CD2 CONECT HXT 1 OXT END HET 1LU 21 HETNAM 1LU (2S)-2-hydroxy-4-methyl-pentanoic acid FORMUL 1LU C6 H12 O3