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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P00480: Variant p.Leu201Pro

Ornithine transcarbamylase, mitochondrial
Gene: OTC
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Variant information Variant position: help 201 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help LP/P [Disclaimer] The variants are classified into three categories: LP/P, LB/B and US.
  • LP/P: likely pathogenic or pathogenic.
  • LB/B: likely benign or benign.
  • US: uncertain significance

Residue change: help From Leucine (L) to Proline (P) at position 201 (L201P, p.Leu201Pro). Indicates the amino acid change of the variant. The one-letter and three-letter codes for amino acids used in UniProtKB/Swiss-Prot are those adopted by the commission on Biochemical Nomenclature of the IUPAC-IUB.
Physico-chemical properties: help Similar physico-chemical property. Both residues are medium size and hydrophobic. The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help -3 The score within a Blosum matrix for the corresponding wild-type to variant amino acid change. The log-odds score measures the logarithm for the ratio of the likelihood of two amino acids appearing by chance. The Blosum62 substitution matrix is used. This substitution matrix contains scores for all possible exchanges of one amino acid with another:
  • Lowest score: -4 (low probability of substitution).
  • Highest score: 11 (high probability of substitution).
More information can be found on the following page

Variant description: help In OTCD; neonatal. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 201 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 354 The length of the canonical sequence.
Location on the sequence: help EHYSSLKGLTLSWIGDGNNI L HSIMMSAAKFGMHLQAATPK The residue change on the sequence. Unless the variant is located at the beginning or at the end of the protein sequence, both residues upstream (20) and downstream (20) of the variant will be shown.
Residue conservation: help The multiple alignment of the region surrounding the variant against various orthologous sequences.
Human                         EHY---------SSLKGLTLSWIGDGNNILHSIMMSAAKFGMHLQAATPK

Mouse                         EHY---------GSLKGLTLSWIGDGNNILHSIMMSAAKFG

Rat                           EHY---------GSLKGLTLSWIGDGNNILHSIMMSAAKFG

Bovine                        EHY---------GSLKGLTLSWIGDGNNILHSIMMSAAKFG

Sheep                         EHY---------GSLKGLTLSWIGDGNNILHSIMMSAAKFG

Chicken                       EHY---------GGLNGLTIAWIGDGNNVLHSIMTSAAKLG

Baker's yeast                 ENFNISLDEVNKGINSKLKMAWIGDANNVINDMCIACLKFG

Fission yeast                 ETF---------KSFDGLKVAWVGDANNVLHDLMIANAKVG

Sequence annotation in neighborhood: help The regions or sites of interest surrounding the variant. In general the features listed are posttranslational modifications, binding sites, enzyme active sites, local secondary structure or other characteristics reported in the cited references. The "Sequence annotation in neighborhood" lines have a fixed format:
  • Type: the type of sequence feature.
  • Positions: endpoints of the sequence feature.
  • Description: contains additional information about the feature.
TypePositionsDescription
Chain 33 – 354 Ornithine transcarbamylase, mitochondrial
Binding site 199 – 199
Modified residue 221 – 221 N6-acetyllysine; alternate
Modified residue 221 – 221 N6-succinyllysine; alternate
Helix 199 – 205



Literature citations
Ten novel mutations of the ornithine transcarbamylase (OTC) gene in OTC deficiency.
Shimadzu M.; Matsumoto H.; Matsuura T.; Kobayashi K.; Komaki S.; Kiwaki K.; Hoshide R.; Endo F.; Saheki T.; Matsuda I.;
Hum. Mutat. Suppl. 1:S5-S7(1998)
Cited for: VARIANTS OTCD 178-THR-LEU-179 DEL; HIS-180; PRO-201; ARG-207; ILE-264 AND ARG-267;
Disclaimer: Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. They are not in any way intended to be used as a substitute for professional medical advice, diagnostic, treatment or care.