description: 'R4: `SubstanceProtein.numberOfSubunits` (new:integer)' package_name: hl7.fhir.uv.xver-r4.r3 derivation: constraint name: ExtensionSubstanceProtein_NumberOfSubunits type: Extension elements: url: base: {max: '1', min: 1, path: Extension.url} pattern: {type: Uri, value: 'http://hl7.org/fhir/4.0/StructureDefinition/extension-SubstanceProtein.numberOfSubunits'} index: 0 value: base: {max: '1', min: 0, path: 'Extension.value[x]'} short: Number of linear sequences of amino acids linked through peptide bonds. The number of subunits constituting the SubstanceProtein shall be described. It is possible that the number of subunits can be variable choices: [valueInteger] index: 2 valueInteger: short: Number of linear sequences of amino acids linked through peptide bonds. The number of subunits constituting the SubstanceProtein shall be described. It is possible that the number of subunits can be variable type: integer base: {max: '1', min: 0, path: 'Extension.value[x]'} choiceOf: value index: 3 package_version: 0.1.0 class: extension kind: complex-type url: http://hl7.org/fhir/4.0/StructureDefinition/extension-SubstanceProtein.numberOfSubunits base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.1.0 required: [url]