Protein Data Bank Contents Guide:

Atomic Coordinate Entry Format Description

Version 3.3

Introduction

Title Section

Primary Structure Section

MODRES

Heterogen Section

HET
FORMUL

HETNAM

HETSYN

Secondary Structure Section

HELIX

SHEET

Connectivity Annotation Section

SSBOND

LINK

CISPEP

Miscellaneous Features Section

SITE

Crystallographic and Coordinate Transformation Section

ORIGXn

SCALEn

Coordinate Section

MODEL
ATOM

ANISOU
TER

Connectivity Section

CONECT

Bookkeeping Section

MASTER

END