Chains and heterogens:
PDB Chain Sequences:
>1skaA (A:) skscdtvdlgyqcspatshlwgqyspffsledelsvssklpkdcritlvqvlsrhgaryp tsskskkykklvtaiqanatdfkgkfaflktynytlgaddltpfgeqqlvnsgikfyqry kalarsvvpfirasgsdrviasgekfiegfqqakladpgatnraapaisviipesetfnn tldhgvctkfeasqlgdevaanftalfapdiraraekhlpgvtltdedvvslmdmcsfdt vartsdasqlspfcqlfthnewkkynylqslgkyygygagnplgpaqgigftneliarlt rspvqdhtstnstlvsnpatfplnatmyvdfshdnsmvsiffalglyngteplsrtsves akeldgysaswvvpfgarayfetmqcksekeplvralindrvvplhgcdvdklgrcklnd fvkglswarsggnwgecfs
>1skaA (A:) cdtvdlgyqcspatshlwgqyspffsledelsvssklpkdcritlvqvlsrhgaryptss kskkykklvtaiqanatdfkgkfaflktynytlgaddltpfgeqqlvnsgikfyqrykal arsvvpfirasgsdrviasgekfiegfqqakladpgatnraapaisviipesetfnntld hgvctkfeasqlgdevaanftalfapdiraraekhlpgvtltdedvvslmdmcsfdtvar tsdasqlspfcqlfthnewkkynylqslgkyygygagnplgpaqgigftneliarltrsp vqdhtstnstlvsnpatfplnatmyvdfshdnsmvsiffalglyngteplsrtsvesake ldgysaswvvpfgarayfetmqcksekeplvralindrvvplhgcdvdklgrcklndfvk glswarsggnwgecf