Chains and heterogens:
PDB Chain Sequences:
>4a2gA (A:) aigpvadltisngavspdgfsrqailvndvfpsplitgnkgdrfqlnvidnmtnhtmlks tsihwhgffqhgtnwadgpafvnqcpistghaflydfqvpdqagtfwyhshlstqycdgl rgpivvydpndphaslydvdddstvitladwyhlaakvgapvptadatlinglgrsaatl aadlavitvtkgkryrfrlvslscdpnytfsidghsltvieadsvnlkphtvdslqifaa qrysfvlnadqdvdnywiralpnsgtqnfaggtnsailrydgaapvepttsqtpstnplv esalttlkgtaapgsptpggvdlalnmafgfaggnftingasftpptvpvllqilsgaqs aadllpagsvyslpanadieislpataaapgfphpfhlhghvfavvrsagsstynyanpv yrdvvstgapgdnvtirfrtdnpgpwflhchidfhleagfavvmaedipdvaatnpvpqa wsdlcptydalspddq