>7b4bA (A:) observed residues (from ATOM records)
vpsqktyqgsygfrlgflhsgtaksvtctyspalnkmfcqlaktcpvqlwvdstpppgtr
vramaiykqsqhmtevvrrcphhercdglappqhlirvegnlrveylddrntfrhsvvvp
yeppevgsdcttihynymcnsscmggmnrrpiltiitledssgnllgrnsfevcvcacpg
rdrrteeenl