I would guess your network connection has a problem. I could get it smoothly. Also, to my experience NCBI GenBank is not so user friendly; so, just try again!
mySeq = getgenbank('AB247454.1')
struct with fields:
LocusName: 'AB247454'
LocusSequenceLength: '15231'
LocusNumberofStrands: ''
LocusTopology: 'linear'
LocusMoleculeType: 'mRNA'
LocusGenBankDivision: 'VRT'
LocusModificationDate: '13-JUL-2007'
Definition: 'Danio rerio ryr1b mRNA for ryanodine receptor 1b, complete cds.'
Accession: 'AB247454'
Version: 'AB247454.1'
GI: ''
Project: []
DBLink: []
Keywords: []
Segment: []
Source: 'Danio rerio (zebrafish)'
SourceOrganism: [4×65 char]
Reference: {[1×1 struct] [1×1 struct]}
Comment: []
Features: [100×74 char]
CDS: [1×1 struct]
Sequence: 'atggcagaaggagaggggggagatgaagagatccagttcctgcggacggaagatcaggttgtgctccagtgcacagcgaccgttctgaaggagcagatcaaactgtgcctgtcctgcgaaggctttgggaaccggctgtgctttttagagacaacttcaaatgcccagaatgttccccctgatctagccatctgttcgtttgtgctggagcagtcgctgtcggttcgagctctgcaggagatgctggcgaacaccgtggacatgacggagtcatctcagggaggaggacaccgaacgctgctatatggtcatgccatcctcctgagacactaccattctagcatgtatcttagctgtctgacgacatcacgttcactaacagacaagctggcctttgatgtgggcctgcagttggatgcaacaggggaagcatgttggtggaccatccatcctgcatccaaacagagatccgagggtgagaaggtcagagtaggagacgacctgatccttgtcagcgtgtcatcagagagatacctacatctgtcatacgccagtggagacctgatggttgatgcctccttcatgcagaccttatggaacatgaatccagtctgttcaggttgcgagttggcagaggggtacttaactggaggtcatgtcttaagactgtttcatggtcacatggatgagtgtctggccatctcaacacctgatcagggagaggagcagcgcaagattgcgcagtatgaaggaggggcagtatgtagtcaggcccgctcattgtggagacttgagcctctgagaatcggatggagcggtagccacatgaagtggggtcaggcgttccgcgttcgccacatcacaacaggtcgatatctgtgtctggatgatgagaagggcctgatggttctggatccagagaaagcaaacaccaaacaatctgccttctctttccgtgcctcaaaagagaaagtggaaggggagaagaaaaagcgggatgttgagggaatgggtattcctgagatcaagtatggcgagtccatgtgctttatgcagcatatttctacaggcctgtggctcacatatgctgctttagatgctaaagcggctcgcctgggaaccatgaagagaagggtcatgttacatcaagagggccatatggatgacgcactgacctgctctcgctctcagacagaagagtcccaggcggctcgtatgatctacagcaccacaggcctttttacacagttcatcaaaggtctggactctctcagtgggaagaacaaatcacccggtccagtgtctctgcctctggatggagtgattctgtcccttcaggatctgatccactacttcagacctccagaggaagagctggaacacgaggagaaacagaccaaactgcgttcgctacgcaaccgacagaacctcttccaagaggaggggatgatcaccatcgtgctggaatgtatcgaccggctgaacgtctacaacactgctgcacacttctctgagtttgctggagaggaagcagctgaatcctggaaagagatcgtcaatttgctctatgagctgcttgcatctctgatcagaggaaaccgttctaactgtgctctgttttgtgataatctggactggctggtcagtaaactggatcgtctggaagcttcatcaggcattctcgaggtgctgtactgtgttttgattgaaagtcctgaagtcttaaacatcattcaggagaatcacatcaagtccatcatttctctcttagacaaacatggacgaaaccataaggttttggacgtgttgcggtctctgtgtgtgtgtaacggtgttgctgtgaggtccaatcaaaacctcatcaccgaaaatttacttccgggtcgtgacctgctactgcagactaacatcgttaactatgcttcaagtgtgaggcccaatatcttcttggggacttgtgaaggttccacccagtataagaagtggtattttgaggtgatggtggactatgtggagtcatttgtgacggctcaggccactcatctgcgagtgggctgggccatgactgaaggcttcagcccatacccaggaggaggagagggctgggggggcaatggtgtgggtgatgacctctactcttatggctttgatggacttcacttgtggtcaggtcatgtgtcacgtcaggtggcttcgcccaatcagcatgccttggcagctgatgatgtcgtgagttgttgtttggatctgagcgtgcccagtatctccttccgcatcaatggccatccggtccagggaatgtttgagaacttcaacttagatggcttgttcttccctgccattagcttttctgctggagtgaaagcccgctttcttttaggtggccgtcatggggattttaagtttttacctcctcctggttatgcaccatgttatgaggctcttcttcccaaagacaggatgcgcattgagcccattaaagagtataaacatgactttgaaggagtcagaaacctgttagggcccacacagtccctcacacacacctcattcactccctgtcctgttgacacggctcagattgttctacctcctcatttggagcggatcagagagaagcttgccgaaaacatacatgagctctgggctgtgacccgtattgagcagggctggacctatggagtgttcagggatgataataagaagttgcacccgtgtctggtggactttcaaagtcttccagaacccgagagaaattataacctccagatgtctggagagaccttgaaaaccctgttagctctgggctgccatgtaggcatgggagatgagaaagcagaggagaatctgagaaagatcaaattgcccaaaacttatgtgatgagcagcggatacaaacccgctcctttggacctcaatcatgtcaaactgacgcctaatcagaaccagttggttgaaaagctggcagaaaacgggcacaatgtttgggcaagagacagagtcagacaaggatggacctacagcattgtgcaggatattgtgaataagcgtaaccctcgtctggtgccttacaatttgctagacgagagaaccaagaagaccaaccgagacagtgtgaacaatgctgtacgcactttgattggttacggatataacatcgagccaccagatcaggagagcagcggtcatggtgttgaggatgtgcatggagataaagtgagaatcttcagggcagagaagcagtatggtgttacctcaggaaaatggtattttgagttcgaggctgtaactacaggagaaatgagggtcggctgggctcgaccgaacgtccgctctgatgttgagcttggttctgatgagttggcctatgtcttcaatggaaacagggctcagcgatggcacattggtaatgatccgtttggtcgtcagtggcagtctggtgatgttgttggttgcatgatagacctcattgaaatgaacatcatgttcacgctcaacggagagatgctgatcagcgattctggttcggaaatggccttcaaagacattgagattggagacggctttattccagtttgcactctgggtctttctcaggttgggcgtattaaccttggtcagaatgttagcagtttgcgctacttcgccatctgtggcctccaagagggctttgagccattcgccatcaacatgaagagagacatcacaatgtggttcagcaagagcctgccccagtttgttcccgttcccactgatcacaaccacattgaggtctctcgtgtggatggaactgtagacagtgctccctgtataaaaattacccacaagacgttcggatcccaaaacgccaacactgacatgctgttcttcaggctaagcatgccagtggagtttcaccttacctttaaggtgcctgctggcactacccccctcacacgagccctcaccatcccagaagaagaagtgctggaggtggacccagactcagactatgaggtgcttaagaagtccgccagtcgcaaagagcaggaggagaaagaaaaggagccgtctgttcctaaagatatcccaggcgttaaagaaaacgacaaagacactgcatctgagaaaggaaagaagaaaggcttcttgtttaaagctaaaaaggcagccatgatcactcctcctccacctccacctcttatgcctcgtttgattgaagacgtggtgccagatgatcgcgatgacgtggacatcatccttaataccaccacatactattactcggttcgtatcttcgctggacaagagcctagcgaggtgtgggttggttgggtcacaccagacttccacatgtatgacctcaacttcgatctgtctaaagttcgtacggttacagtgacagttggagacgacaaaggcaacatacatgacagtataaagagaagtaactgctacatggtgtggggaggagagttcagcagcagccagcagaagttcagccaggaggatctggtgattggttgcttggttgatctggcaacaggccttctgaatttcacagccaatggaaaggagatcaacactttctaccaggtggagcccaacactaagctcttcccagctgtgtttgttcttccaagcagccaaaacatgctccagctggaacttggaaaactcaagaatatcatgcctctttcggcagccatgtttcgtagtgagcgcaagaaccctgttcctcagtgtccacctcgactggatgttcagatgttgacccctgtcatctggagccggatgcccaaccacttcctcaatccagtggtgggacgggtgagcgagaggcatggctggatggtggaatgtacagagcctctcactatgatggcgctgcatatacctgaagaaaacaggtgcattgacatcctggaactatctgagcaacatgacctgctgcagttccactatcacactctgatgctttattgcgccgtgtgtgcactgggcaacaaccgtgtagcccatgccctctgcagccatgtggatgaatcccagctcttctatgcgattgagaacacgtacctgcctggccctctccgcagcggctactacgaccttcttatcagtattcatctggagtcagccaaacgcaaccgcttaggaaccaatcgcgagtttattgttcccatgacatcagagacgcttagtatcacactgttcccagatgcagaggcagcccatgacctgccgggagtgggtctcaccacctgcctcagacctaagctacacttctcccccatcaactttgtaggcactgatccagatctgtacaccctgagccccatcatacctctgcagaatctaaagacccaggctctaagcatgcttactgaagccgtgttcgatggcagccaggccatgcgtgatcctgtagggggcagcgttgagttccacttcgttccaatcctcaaactcatcagcactctcctcatcatgggcatcttcaacaatgaagacgtcaagcacatcctcaagatgattgatcccagtgtgtttggaaagaaagaagaggcagaggaaccagccgaggaagcagctcccaaagaggaaggagaggaagtgaaagagaaagaagaaacggctgaaggagaggaggaggctgtggatgaaggagttggggaggaggaagaggaggagctgaaagagctgaagaaggaggagggagaggaaggagaagaggtcgagaaggccgtagaggaggaggatggagagaaggtggatggagaaaaagcagaggaggaaaaggaggcagaagaagtaggagaggaggccaaagaggaagaagaggaggcgccagaggagggtctacttcaaatgaagatgccagagtctgtgaaactgcagatgtgtactcttctacagtatttctgcgactgtgagctcagacacagagttgaagccataatggcatactctgataattttgtagggcagatccagtcaaaccagcgtgagcgttataatgagctaatgagagcgtttactatgtctgctgcagaaacagctcgcaggacccgagagtttcgctctcctccacaagaacaaattttcctgttgactaacttcaagcacaacccagaagaagaagattgccctgtcccagatgaagtgcgagaaacccacaacaatttccacaatgacctcctgaatcactgtggcgtccacattgaggaagaagtggaggaggaagaggtggacacatctctgagaggcagactgctcactttggtggacaaggtcaaaagccttaagcagaaaaaggaagaagaggaaccagagccagaggaagaacccaaaccaagtactttacaggagttgatatcccacacaatgatccactgggctcaagaggcctttattcagaatccagagctggtgcgactcatgttcagtcttctccaccggcagtatgatgctcttggagagctgattcgtgcactgcccaaggcttacgccatcagtgccgtgtctgtacaagacacgatggaaatgctggagtgcctggggcagattcgatctctgcttattgtccagatgggtccggaagaggaaagactcatgatccagagcattgggaacatcatgaacaacaaagtgttctaccagcaccctaacctgatgcgagcgctgggcatgcatgagacagtcatggaggtgatggtcaacgtgctgggaggtggaggagattcaaaggaaattcgatttccacaaatggtgaccaactgctgtcgcttcctgtgctacttctgcagaatcagccgccagaaccagcgctccatgtttgaccacctctcttacttgctgcagaacagtggcattggactgggaatgcgtggatctacccctctggatgttgctgctgcatcctgcattgacaacaatgagctggcactggccctgcaagagcaagaccttgaaatggtggtgacttatctggctgggtgtggccttcgaatgtgccccatgcttctgtctaaaggctatcctgacatagggtggaatccaggtggaggagagagatatctggacttcctgcgcttcgctgtgtttgtaaatggtgagagcgtagaggagaatgctaatgtggttgttcgtctgttgattcgtcgtcctgagtgctttggccctgccctgagaggagagggtggtgctggtctgttagcagccattgaggaggccattaagatctctgaagaccctgccagagatgggccaactcctaaaaaagacagacgcttcatgtttggaggggaggatcagcacgaagagaatagattacatcttggaaatgctatcatgtcattttattctgcccttattgacttgctgggtcgctgtgctcctgagatgcatttgatccaagcaggtaaaggcgaagctttgagaatccgagccatcttgcgatctcttgtgcccattgaagacttggttggagtcatcagtcttcctgttcaaatccccacctttggcaaagatggtcagatcgttgagccaaaaatgtcagcgagtttcgtgccagaccacaaagcctccatggttcttttcctggacagagtgtacggcatcgataaccaggacttcctgttacatgtgctagaagtgggtttcttgcccgatatgagagcttcagcctctctggatacggtggcgttcagcaccacagaaatggctctggctctgaaccgttacttgtgttctgccgttctgcctctgctcactaaatgtgccccactgttcgctggcactgatcatcgcgccatcatgatcgactctatgctgcacaccatctacaggctgtcccgaggccgtgcccttaccaaagcccagagggacgtcattgaggactgccttatgtctcttgtcaagtatctgcggccatctatgttgcagcatctgttgagaaggctggtgtttgatgtgccaatcttaaatgagtatgccaagatgcccctcaagctgttgaccaatcactacgagcgctgctggaagtattattgcctgccgaacggatgggcaaacttcggagtcacatcagaagaggagctgcatctctcacgcaaactcttctggggcatatttgagtctctcgcacacaagaaattcgatgcagagctgtttaagatcgccatgccctgcatctgtgccattgcgggtgccattcctccagactatgtggatgcaagttattcatcaatgactgagaagaaagcgtctgttgatgctgagggcaacttcgaccccaaaccagtggaaactaccaacaccatcattcccgagagacttgatgccttcattaacaaatatgctgagcacactcatgataaatgggcttttgagaagatccaaaacaactggacatatggagaggttctagatgagaacgccaaaactcaccccatgctgcggccttataaaactttctctgaaaaggataaggagatctatcgctggcccattaaggagtccatcaaggccatgctggcatgggaatggactttagagaaagccagagatggggagactgaggtaaaaactgaggtgaaggccaccaggaagatctcccagactgcacaggccacctatgatcccagtcaaggatactctcctcagccagtggaccttataggcatggccttgtccagagagctacagtctatggcagaacagcttgcagagaactaccacaacacctggggccgcaagaagaaaatggagctacaagccaagggtggtggcactcatcctttgttggtaccctatgatacactgacggccaaagagaaggctagagacagagaaaaagcccaagacctgctcaaattcctccagctgaatggatacgctgtaaccaggggtttgaaagacatggagcaggagatttcctccattgagaagcgctttgcttacgggttcctgcagaagctgttgaagtggatggagatcgctcaggagtttattgctcatcttgaggctgtcgtgagcagtggaagagttgaaaaatccccacacgaacaggagattaaattctttgcaaagattctgctcccgctcataaaccagtactttaagaaccactgcctgtatttcctgtccactcctgctaaagtgctgggcagtggtggtcacgcatccaacaaggagaaggagatgattgctagtatcttctgtaagttggccggtctggtgagacacagggtttccctctttggcactgatgcctcagctgtggtcaactgtcttcatattctttcccgttcactggatgccaggactgtaatgaaatctgggcctgagattgtgaaggctggtctgcgctcattctttgaaagtgctgctgatgatattgagaagatggttgagaacctcaaattagggaaagtgtccaccaaaaatcaggtgaaaggtgtatctcagaacattagctacaccaccactgctcttctgccagtcctgacctctctgttcgaccacatcgcccagcaccagtttggagatgatgtcatgttggatgacttgcagatctcctgttaccgcatcatgtgcagtatctactcactgggcaccgtaaagactcctcatgctgagaaccaaagaccagctctaggagagtgtctggctcatcttgctgccgccatgcctgttgccttcctggagccaaacctcaacgagttcaactcatactctgtgtacactaccaaaaccccacgagagagaacaattctgggtctccccagtcaagtgcaggagctgtgtctggacatccctgagctggacgtgttgatgaaagaaatcgggcatctggcagagtctggggcccgttacacagagatgcctcacgtgattgagatcaccctacctatgctctgcaactatctgcctcgctggtgggaaaggggaccagagaacttcccagagcaggaaggctgtctgtgcaccgacgtcacctccgaacaactcaatcaac…'
SearchURL: 'https://www.ncbi.nlm.nih.gov/entrez/viewer.fcgi?db=nuccore&id=AB247454.1'
RetrieveURL: 'https://eutils.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi?db=nuccore&id=152002443&rettype=gb&retmode=text'
