"protofilament" meaning in English

{
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    {
      "args": {
        "1": "en",
        "2": "proto",
        "3": "filament"
      },
      "expansion": "proto- + filament",
      "name": "prefix"
    }
  ],
  "etymology_text": "From proto- + filament.",
  "forms": [
    {
      "form": "protofilaments",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "expansion": "protofilament (plural protofilaments)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
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        {
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          "name": "English terms prefixed with proto-",
          "parents": [],
          "source": "w"
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          "ref": "2008 January 22, Mitsusada Iwasa Toshiro Oda, Akihiro Narita da, “The nature of the globular- to fibrous-actin transition”, in Nature, volume 457, number 7228, →DOI:",
          "text": "The MreB crystal contained a straight, single-stranded protofilament[…].",
          "type": "quote"
        }
      ],
      "glosses": [
        "A filament of polymerized tubulin in a cell, which becomes part of a microtubule"
      ],
      "id": "en-protofilament-en-noun-Xm0BDYW3",
      "links": [
        [
          "filament",
          "filament"
        ],
        [
          "tubulin",
          "tubulin"
        ],
        [
          "microtubule",
          "microtubule"
        ]
      ]
    }
  ],
  "word": "protofilament"
}

{
  "etymology_templates": [
    {
      "args": {
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        "2": "proto",
        "3": "filament"
      },
      "expansion": "proto- + filament",
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    }
  ],
  "etymology_text": "From proto- + filament.",
  "forms": [
    {
      "form": "protofilaments",
      "tags": [
        "plural"
      ]
    }
  ],
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      "expansion": "protofilament (plural protofilaments)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "English nouns",
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          "text": "The MreB crystal contained a straight, single-stranded protofilament[…].",
          "type": "quote"
        }
      ],
      "glosses": [
        "A filament of polymerized tubulin in a cell, which becomes part of a microtubule"
      ],
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        [
          "filament",
          "filament"
        ],
        [
          "tubulin",
          "tubulin"
        ],
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        ]
      ]
    }
  ],
  "word": "protofilament"
}