Chains and heterogens:
PDB Chain Sequences:
>2g28A (A:) serfpndvdpietrdwlqaiesvireegveraqylidqllaearkggvnvaagtgisnyi ntipveeqpeypgnlelerrirsairwnaimtvlraskkdlelgghmasfqssatiydvc fnhffrarneqdggdlvyfqghispgvyaraflegrltqeqldnfrqevhgnglssyphp klmpefwqfptvsmglgpigaiyqakflkylehrglkdtskqtvyaflgdgemdepeskg aitiatrekldnlvfvincnlqrldgpvtgngkiinelegifegagwnvikvmwgsrwde llrkdtsgkliqlmnetvdgdyqtfkskdgayvrehffgkypetaalvadwtdeqiwaln rgghdpkkiyaafkkaqetkgkatvilahtikgygmgdaaegkniahqvkkmnmdgvrhi rdrfnvpvsdadieklpyitfpegseehtylhaqrqklhgylpsrqpnfteklelpslqd fgalleeqskeisttiafvralnvmlknksikdrlvpiiadeartfgmeglfrqigiysp ngqqytpqdreqvayykedekgqilqeginelgagcswlaaatsystnnlpmipfyiyys mfgfqrigdlcwaagdqqargfliggtsgrttlngeglqhedghshiqsltipncisydp ayayevavimhdglermygekqenvyyyittlnenyhmpampegaeegirkgiykletie gskgkvqllgsgsilrhvreaaeilakdygvgsdvysvtsftelardgqdcerwnmlhpl etprvpyiaqvmndapavastdymklfaeqvrtyvpaddyrvlgtdgfgrsdsrenlrhh fevdasyvvvaalgelakrgeidkkvvadaiakfnidadkvnprla
>2g28A (A:) isnyintipveeqpeypgnlelerrirsairwnaimtvlraskkdlelgghmasfqssat iydvcfnhffrarneqdggdlvyfqghispgvyaraflegrltqeqldnfrqevhgngls syphpklmpefwqfptvsmglgpigaiyqakflkylehrglkdtskqtvyaflgdgemde peskgaitiatrekldnlvfvincnlqrldgpvtgngkiinelegifegagwnvikvmwg srwdellrkdtsgkliqlmnetvdgdyqtfkskdgayvrehffgkypetaalvadwtdeq iwalnrgghdpkkiyaafkkaqetkgkatvilahtikgygmgdaamdgvrhirdrfnvpv sdadieklpyitfpegseehtylhaqrqklhgylpsrqpnfteklelpslqdfgalleeq skeisttiafvralnvmlknksikdrlvpiiadeartfgmeglfrqigiyspedekgqil qeginelgagcswlaaatsystnnlpmipfyiyysmfgfqrigdlcwaagdqqargflig gtsgrttlngeglqhedghshiqsltipncisydpayayevavimhdglermygekqenv yyyittlnenyhmpampegaeegirkgiykletiegskgkvqllgsgsilrhvreaaeil akdygvgsdvysvtsftelardgqdcerwnmlhpletprvpyiaqvmndapavastdymk lfaeqvrtyvpaddyrvlgtdgfgrsdsrenlrhhfevdasyvvvaalgelakrgeidkk vvadaiakfnidadkvnprla
>2g28B (B:) serfpndvdpietrdwlqaiesvireegveraqylidqllaearkggvnvaagtgisnyi ntipveeqpeypgnlelerrirsairwnaimtvlraskkdlelgghmasfqssatiydvc fnhffrarneqdggdlvyfqghispgvyaraflegrltqeqldnfrqevhgnglssyphp klmpefwqfptvsmglgpigaiyqakflkylehrglkdtskqtvyaflgdgemdepeskg aitiatrekldnlvfvincnlqrldgpvtgngkiinelegifegagwnvikvmwgsrwde llrkdtsgkliqlmnetvdgdyqtfkskdgayvrehffgkypetaalvadwtdeqiwaln rgghdpkkiyaafkkaqetkgkatvilahtikgygmgdaaegkniahqvkkmnmdgvrhi rdrfnvpvsdadieklpyitfpegseehtylhaqrqklhgylpsrqpnfteklelpslqd fgalleeqskeisttiafvralnvmlknksikdrlvpiiadeartfgmeglfrqigiysp ngqqytpqdreqvayykedekgqilqeginelgagcswlaaatsystnnlpmipfyiyys mfgfqrigdlcwaagdqqargfliggtsgrttlngeglqhedghshiqsltipncisydp ayayevavimhdglermygekqenvyyyittlnenyhmpampegaeegirkgiykletie gskgkvqllgsgsilrhvreaaeilakdygvgsdvysvtsftelardgqdcerwnmlhpl etprvpyiaqvmndapavastdymklfaeqvrtyvpaddyrvlgtdgfgrsdsrenlrhh fevdasyvvvaalgelakrgeidkkvvadaiakfnidadkvnprla
>2g28B (B:) isnyintipveeqpeypgnlelerrirsairwnaimtvlraskkdlelgghmasfqssat iydvcfnhffrarneqdggdlvyfqghispgvyaraflegrltqeqldnfrqevhgngls syphpklmpefwqfptvsmglgpigaiyqakflkylehrglkdtskqtvyaflgdgemde peskgaitiatrekldnlvfvincnlqrldgpvtgngkiinelegifegagwnvikvmwg srwdellrkdtsgkliqlmnetvdgdyqtfkskdgayvrehffgkypetaalvadwtdeq iwalnrgghdpkkiyaafkkaqetkgkatvilahtikgygmgdaamdgvrhirdrfnvpv sdadieklpyitfpegseehtylhaqrqklhgylpsrqpnfteklelpslqdfgalleeq skeisttiafvralnvmlknksikdrlvpiiadeartfgmeglfrqigiyspedekgqil qeginelgagcswlaaatsystnnlpmipfyiyysmfgfqrigdlcwaagdqqargflig gtsgrttlngeglqhedghshiqsltipncisydpayayevavimhdglermygekqenv yyyittlnenyhmpampegaeegirkgiykletiegskgkvqllgsgsilrhvreaaeil akdygvgsdvysvtsftelardgqdcerwnmlhpletprvpyiaqvmndapavastdymk lfaeqvrtyvpaddyrvlgtdgfgrsdsrenlrhhfevdasyvvvaalgelakrgeidkk vvadaiakfnidadkvnprla