Incidental Mutation 'R5549:Hmbs'
ID 501142
Institutional Source Beutler Lab
Gene Symbol Hmbs
Ensembl Gene ENSMUSG00000032126
Gene Name hydroxymethylbilane synthase
Synonyms Uros1, Ups, porphobilinogen deaminase, PBGD
MMRRC Submission 043106-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R5549 (G1)
Quality Score 225
Status Not validated
Chromosome 9
Chromosomal Location 44247645-44255525 bp(-) (GRCm39)
Type of Mutation critical splice donor site (1 bp from exon)
DNA Base Change (assembly) C to T at 44250774 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change
Ref Sequence ENSEMBL: ENSMUSP00000095166 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000052686] [ENSMUST00000077353] [ENSMUST00000077353] [ENSMUST00000097558] [ENSMUST00000215091] [ENSMUST00000216852]
AlphaFold P22907
Predicted Effect probably benign
Transcript: ENSMUST00000052686
SMART Domains Protein: ENSMUSP00000051432
Gene: ENSMUSG00000049932

DomainStartEndE-ValueType
H2A 3 123 1.64e-81 SMART
Predicted Effect probably null
Transcript: ENSMUST00000077353
SMART Domains Protein: ENSMUSP00000076575
Gene: ENSMUSG00000032126

DomainStartEndE-ValueType
Pfam:Porphobil_deam 21 233 1.7e-79 PFAM
Pfam:Porphobil_deamC 244 323 6.8e-24 PFAM
Predicted Effect probably null
Transcript: ENSMUST00000077353
SMART Domains Protein: ENSMUSP00000076575
Gene: ENSMUSG00000032126

DomainStartEndE-ValueType
Pfam:Porphobil_deam 21 233 1.7e-79 PFAM
Pfam:Porphobil_deamC 244 323 6.8e-24 PFAM
Predicted Effect probably null
Transcript: ENSMUST00000097558
SMART Domains Protein: ENSMUSP00000095166
Gene: ENSMUSG00000032126

DomainStartEndE-ValueType
Pfam:Porphobil_deam 3 219 3.9e-95 PFAM
Pfam:Porphobil_deamC 227 327 4.7e-23 PFAM
Predicted Effect noncoding transcript
Transcript: ENSMUST00000196879
Predicted Effect noncoding transcript
Transcript: ENSMUST00000214012
Predicted Effect noncoding transcript
Transcript: ENSMUST00000214967
Predicted Effect probably benign
Transcript: ENSMUST00000215091
Predicted Effect noncoding transcript
Transcript: ENSMUST00000215859
Predicted Effect probably benign
Transcript: ENSMUST00000216658
Predicted Effect probably benign
Transcript: ENSMUST00000216852
Predicted Effect noncoding transcript
Transcript: ENSMUST00000215934
Coding Region Coverage
  • 1x: 99.9%
  • 3x: 99.7%
  • 10x: 98.6%
  • 20x: 95.9%
Validation Efficiency
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a member of the hydroxymethylbilane synthase superfamily. The encoded protein is the third enzyme of the heme biosynthetic pathway and catalyzes the head to tail condensation of four porphobilinogen molecules into the linear hydroxymethylbilane. Mutations in this gene are associated with the autosomal dominant disease acute intermittent porphyria. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Jul 2008]
PHENOTYPE: Mice heterozygous for one null allele and a functional allele with a milder mutation exhibit typical features of acute intermittent porphyria with massive urinary excretion of aminolevulinic acid after phenobarbital treatment, erythruria, ataxia, motor dysfunction, and neurologic muscle atrophy. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 50 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
3425401B19Rik T C 14: 32,384,993 (GRCm39) E324G possibly damaging Het
Acad8 C T 9: 26,896,847 (GRCm39) R204Q probably damaging Het
Adgrg7 T G 16: 56,570,790 (GRCm39) T413P probably damaging Het
Ankrd11 A G 8: 123,617,117 (GRCm39) I2224T probably benign Het
Arhgap23 A G 11: 97,357,394 (GRCm39) D964G probably damaging Het
Atf6b A G 17: 34,870,657 (GRCm39) D367G probably damaging Het
Axdnd1 A G 1: 156,226,104 (GRCm39) L131P probably damaging Het
Bmp8b T C 4: 123,018,278 (GRCm39) V383A probably damaging Het
C5ar2 A G 7: 15,970,868 (GRCm39) V353A probably damaging Het
Ccr5 C A 9: 123,925,408 (GRCm39) A337E probably benign Het
Cftr G A 6: 18,227,953 (GRCm39) V382I probably benign Het
Csmd3 G C 15: 48,048,753 (GRCm39) S446C probably damaging Het
Cyp2d12 A G 15: 82,440,498 (GRCm39) T96A probably benign Het
Diaph3 T G 14: 87,216,106 (GRCm39) I465L probably benign Het
Fabp3 A G 4: 130,209,018 (GRCm39) *134W probably null Het
Fgf22 G T 10: 79,592,696 (GRCm39) M130I probably damaging Het
Flnc G A 6: 29,453,690 (GRCm39) V1792M probably damaging Het
Grik3 G A 4: 125,579,838 (GRCm39) A528T possibly damaging Het
Hecw2 G A 1: 53,964,850 (GRCm39) R659W possibly damaging Het
Ift122 T G 6: 115,868,983 (GRCm39) L490R probably damaging Het
Igkv4-63 T C 6: 69,355,116 (GRCm39) H55R probably damaging Het
Itga4 A T 2: 79,086,611 (GRCm39) N96I probably damaging Het
Kcna7 A T 7: 45,056,063 (GRCm39) H93L probably damaging Het
Klhdc7b A G 15: 89,271,562 (GRCm39) I815V probably benign Het
Lcmt1 G A 7: 123,027,330 (GRCm39) E298K probably damaging Het
Ly6g6f A G 17: 35,302,333 (GRCm39) V68A possibly damaging Het
Map3k8 C T 18: 4,340,762 (GRCm39) C184Y probably damaging Het
Mcemp1 A G 8: 3,718,340 (GRCm39) T183A possibly damaging Het
Mobp T G 9: 119,996,876 (GRCm39) S2R probably damaging Het
Mprip A G 11: 59,651,644 (GRCm39) S1783G probably benign Het
Mterf3 C A 13: 67,076,321 (GRCm39) A129S probably benign Het
Nfkb2 G T 19: 46,296,006 (GRCm39) E170D probably benign Het
Nr2c1 A G 10: 94,003,558 (GRCm39) T239A probably benign Het
Odr4 A G 1: 150,247,909 (GRCm39) S325P possibly damaging Het
Oplah G A 15: 76,182,466 (GRCm39) A963V probably damaging Het
Or13a26 A G 7: 140,284,712 (GRCm39) probably null Het
Parp14 C T 16: 35,661,505 (GRCm39) S1481N probably benign Het
Prxl2a T C 14: 40,726,013 (GRCm39) K44E possibly damaging Het
Rictor C T 15: 6,816,391 (GRCm39) T1221M probably damaging Het
Rpe G A 1: 66,755,163 (GRCm39) D182N probably damaging Het
Slc24a3 C A 2: 145,448,784 (GRCm39) P443T probably damaging Het
Slc25a47 T C 12: 108,822,143 (GRCm39) *311Q probably null Het
Sox2 C G 3: 34,705,142 (GRCm39) A193G probably benign Het
Svep1 T C 4: 58,057,954 (GRCm39) S3284G probably benign Het
Zfp369 A T 13: 65,445,194 (GRCm39) H779L probably damaging Het
Zfp513 A T 5: 31,357,947 (GRCm39) L144Q possibly damaging Het
Zfp526 T C 7: 24,925,109 (GRCm39) F456S possibly damaging Het
Zfp791 C T 8: 85,836,835 (GRCm39) G343D probably damaging Het
Zfp941 A C 7: 140,388,021 (GRCm39) I664S possibly damaging Het
Zkscan3 A G 13: 21,578,233 (GRCm39) V189A probably damaging Het
Other mutations in Hmbs
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL01526:Hmbs APN 9 44,250,845 (GRCm39) missense possibly damaging 0.91
IGL02312:Hmbs APN 9 44,252,510 (GRCm39) critical splice donor site probably null
R0386:Hmbs UTSW 9 44,248,305 (GRCm39) missense probably benign 0.06
R0411:Hmbs UTSW 9 44,252,949 (GRCm39) nonsense probably null
R0656:Hmbs UTSW 9 44,248,657 (GRCm39) missense probably benign 0.31
R1503:Hmbs UTSW 9 44,248,729 (GRCm39) missense probably benign 0.42
R1560:Hmbs UTSW 9 44,248,657 (GRCm39) missense possibly damaging 0.71
R1953:Hmbs UTSW 9 44,248,741 (GRCm39) missense probably damaging 1.00
R2127:Hmbs UTSW 9 44,252,004 (GRCm39) missense probably benign 0.09
R4637:Hmbs UTSW 9 44,250,834 (GRCm39) missense probably damaging 1.00
R6611:Hmbs UTSW 9 44,252,988 (GRCm39) missense probably damaging 0.98
R7509:Hmbs UTSW 9 44,248,208 (GRCm39) missense
R7702:Hmbs UTSW 9 44,248,147 (GRCm39) splice site probably null
R8383:Hmbs UTSW 9 44,249,240 (GRCm39) missense probably damaging 1.00
R8506:Hmbs UTSW 9 44,252,921 (GRCm39) critical splice donor site probably null
R9069:Hmbs UTSW 9 44,248,102 (GRCm39) missense possibly damaging 0.79
R9149:Hmbs UTSW 9 44,252,983 (GRCm39) nonsense probably null
R9780:Hmbs UTSW 9 44,247,985 (GRCm39) missense probably damaging 1.00
X0024:Hmbs UTSW 9 44,249,265 (GRCm39) missense possibly damaging 0.89
Predicted Primers PCR Primer
(F):5'- AATTGTCCTCATTGCCAGGCC -3'
(R):5'- ACCTTGCCAGAGAAAAGGTG -3'

Sequencing Primer
(F):5'- CAGCTTGGTCTACAAAGTGAGTTCC -3'
(R):5'- AAAGGTGAGTGGGCCTAGTGTG -3'
Posted On 2017-12-01